Dynacraft MULTI-SPEED Owner'S Manual Download Page 104

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DET

AILED MAINTENANCE

DETAILED MAINTENANCE

CRANK SET

The crank set refers to the bottom bracket axle and

bearings, the crank arms, and chainrings. Your bike may be

fitted with either a one piece crank, where the crank arms

and bottom bracket are a single component, or cotterless

cranks, where the crank arms bolt onto the bottom bracket

axle without using old fashioned type cotterpins. The one

piece system is simpler and requires less maintenance, while

the cotterless system requires a little extra care.

Inspection

The crank set should be checked for correct adjustment

and tightness every month. Cotterless crank axle nuts must

be kept tight, and the bottom bracket bearings must be

properly adjusted. Remove the chain and try to move the

cranks from side to side with your hands. The cranks should

not move on the axle, and there should be only very slight

movement in the bottom bracket. Next, spin the cranks. If

they don’t spin freely without grinding noise, then adjustment

or lubrication will be needed. Also, check that there are no

broken teeth on the chainrings, and wipe off excess dirt and

grease that may have built up on them.

WARNING

Never ride your bike if the cranks are loose. This could

damage the crank arms beyond repair, and result in a

loss of control, injury or death.

Summary of Contents for MULTI-SPEED

Page 1: ...om OWNER S MANUAL FOR SINGLE SPEED AND MULTI SPEED BICYCLES This manual contains important safety performance and maintenance information Read the manual before taking your first ride on your new bicycle and keep the manual handy for future reference ...

Page 2: ... HELMET COVERS YOUR FOREHEAD INCORRECT FITTING FOREHEAD IS EXPOSED AND VULNERABLE TO SERIOUS INJURY HELMETS SAVE LIVES ALWAYS WEAR A PROPERLY FITTED HELMET WHEN YOU RIDE YOUR BICYCLE DO NOT RIDE AT NIGHT AVOID RIDING IN WET CONDITIONS ...

Page 3: ...EASE RETAIN YOUR SALES RECEIPT AS PROOF OF PURCHASE FILL OUT THE INFORMATION BELOW AND KEEP THIS MANUAL IN A SAFE PLACE BRAND DESCRIPTION MODEL PRODUCTION DATE SERIAL DATE OF PURCHASE STORE PLACE OF PURCHASE ...

Page 4: ... manual contains many WARNINGS and CAUTIONS concerning the consequences of failure to maintain or inspect your bicycle Many of the warnings and cautions say you may lose control and fall Because any fall can result in serious injury or even death we do not repeat the warning of possible injury or death whenever the risk of falling is mentioned Dynacraft does not encourage stunting trick riding ram...

Page 5: ... is supervised by an adult that you and your child have learned understand and obey not only the applicable local motor vehicle bicycle and traffic laws but also the common sense rules of safe and responsible bicycling As a parent you should read this manual before letting your child ride the bicycle Please make sure that your child always wears an approved bicycle helmet when riding NOTE The illu...

Page 6: ...concerns as to your experience or ability to properly assemble repair or maintain your bicycle You will save time and the convenience of having to go back to the store if you choose to write or call us concerning missing parts service questions operating advice and or assembly questions DYNACRAFT CUSTOMER SERVICE 1 800 551 0032 7AM to 4PM PACIFIC TIME Dynacraft BSC Inc 89 South Kelly Road American...

Page 7: ...RANTY DIRECTORY vii 1 2 5 6 25 26 64 65 75 76 78 79 107 108 110 111 116 WARNING IMPORTANT Take notice of this symbol throughout this manual and pay particular attention to the instructions blocked off and preceded by this symbol DYNACRAFT BSC INC 89 South Kelly Road American Canyon CA 94503 Customer Service 1 800 551 0032 www dynacraftbikes com DIRECTORY ...

Page 8: ...akes Training Wheels Rotors Final Check HOW THINGS WORK Removing Bolt on Wheels Seatpost Quick Release Brakes Shifting Tires and Tubes Bicycle Suspension SERVICING Schedule 1 Lubrication Schedule 2 Service Checklist DETAILED MAINTENANCE Wheel Inspection Tire Inspection Tire Pressures Hub Bearing Adjustment Flat Tire Repair Handlebar Stem Handlebars Grip Shift Installation Cables and Cable Housing ...

Page 9: ...hange phone call TOOLS REQUIRED 1 Allen key wrenches 4 mm 5 mm 6 mm 8 mm 2 Adjustable wrench 3 Tire lever 4 Standard Phillips head screwdriver 5 Open end or pedal wrench 15 mm 6 Standard slip joint pliers 7 Tire pump 8 Standard flat head screwdriver 1 1 5 5 2 2 6 5 3 3 7 6 4 4 8 TOOLS ...

Page 10: ...n bicycles are much sturdier than those on racing style bicycles Top Tube Shift Lever Handlebar Stem Seat Brake Lever Head Set Tire Seatpost Handlebar Head Tube Rim Gear Control Cable Down Tube Seat Tube Retaining Washer Front Derailleur Tire Valve Quick Release Brake Control Cable Seat Stay Front Reflector Front Reflector Rear Reflector Front Brake Rear Brake Front Fork Wheel Reflector Gear Contr...

Page 11: ... Quick Release Brake Lever Head Tube Tire Down Tube Gear Control Cable Tire Valve Retaining Washer Seatpost Seat Stay Front Reflector Rear Reflector Front Brake Rear Brake Pivot behind chain wheel Front Fork Wheel Reflector Wheel Reflector Freewheel Front Hub Spokes Rear Derailleur Bottom Bracket Axle Chain Wheel Crank Arm Pedal Chain Stay Chain Front Derailleur Chain Guard PARTS LIST IDENTIFICATI...

Page 12: ...low maintenance Chain Wheel Chain Handlebar Grip Brake Lever Front Brake Rear Reflector Rear Sprocket Handlebar Stem Handlebar Front Fork Training Wheels 16 and smaller Head Set Front Reflector Brake Control Cable Brake Pad Rim Front Hub Tire Valve Spokes Retaining Washer Wheel Reflector Tire Seatpost Head Tube Seat Stay Down Tube Top Tube Wheel Reflector Seat Tube Seat Quick Release Chain Guard C...

Page 13: ...and fastest type of bicycle Top Tube Shift Lever Seat Handlebar Stem Seat Tube Handlebar Seatpost Head Set Down Tube Front Reflector Rear Reflector Head Tube Gear Control Cable Front Derailleur Brake Lever Quick Release Brake Control Cable Rear Brake Front Brake Seat Stay Front Fork Wheel Reflector Wheel Reflector Gear Control Cable Freewheel Front Hub Spokes Rear Derailleur PARTS LIST IDENTIFICAT...

Page 14: ...ike of the same size FRAME WEIGHT LIMIT There is no American standard for testing the structural weight limits of bicycle frames and for each bike type our limits were determined through lab testing using international standards that seemed reasonable Not all models were tested Limits are based on the test results for exemplars of a 20 inch free style bicycle a 26 inch diamond frame bicycle and a ...

Page 15: ... minimum of 1 inch clearance above the highest point of the top tube when the child is straddling the bicycle with both feet on the ground see drawing below CAUTION For safe and comfortable riding there should be a clearance of no less than 1 inch between the inseam area of the intended rider and the top tube of the bicycle frame while the rider straddles the bicycle with both feet flat on the gro...

Page 16: ...YOUR BICYCLE IS CRITICAL Roads are slippery when wet so avoid sharp turns and allow more distance stopping Caliper brakes may become less efficient when wet Leaves loose gravel and other debris can also effect stopping 5 ALWAYS RIDE IN THE SAME DIRECTION AS TRAFFIC Never ride against traffic 6 STOP AND LOOK BEFORE YOU LEAVE AN ALLEY DRIVEWAY OR PARKING LOT Stop look to the left to the right and to...

Page 17: ...BICYCLE ONLY not the bicycle and the rider 17 AVOID THE FOLLOWING HAZARDS Drain grates potholes soft road edges gravel sand wet leaves and or any obstruction in the road Failure to do so could cause wheel s to buckle and result in personal injury to the rider 18 WET WEATHER RIDING Riding your bicycle in wet conditions is not recommended In wet conditions traction and braking power is reduced Ridin...

Page 18: ...ing control and falling Get to know how to handle your bike safely before trying in creased speed or more difficult terrain 1 Wear safety gear appropriate to the kind of riding you plan to do 2 Don t Ride alone in remote areas Even when riding with others make sure that someone knows where you re going and when you expect to be back 3 Always take along some kind of identification so that people kn...

Page 19: ...nnecessary sliding Don t disturb the ecosystem by cutting your own trail or shortcut through vegetation or streams It is your responsibility to minimize your impact on the environment Leave things as you found them and always take out everything you brought in WET WEATHER RIDING Under wet conditions the stopping power of your brakes as well as the brakes of other vehicles sharing the road is drama...

Page 20: ... see Therefore children should never ride at dawn at dusk or at night Adults who choose to accept the greatly increased risk of riding at dawn at dusk or at night need to take extra care both riding and choosing specialized equipment which helps reduce that risk Consult your dealer about night riding safety equipment PEDALING TECHNIQUE Position the ball of your foot on the corner of the pedal When...

Page 21: ...EAVE IT UP TO TRIAL AND ERROR 1 Always wear a properly fitted helmet 2 Do not play in driveways or the road 3 Do not ride on busy streets 4 Do not ride at night 5 Obey all traffic laws especially stop signs and red lights 6 Be aware of other road vehicles behind and nearby 7 Before entering a street Stop look left right and left again for traffic 8 If riding downhill be extra careful Slow down usi...

Page 22: ...DING POSITION Saddle Height In order to obtain the most comfortable riding position and offer the best possible pedaling efficiency the seat height should be set correctly in relation to the rider s leg length The correct saddle height should not allow leg strain from over extension and the hips should not rock from side to side when pedaling While sitting on the bicycle with one pedal at it s low...

Page 23: ...ded beyond this mark the stem may break or damage the fork s steerer tube which could cause you to lose control and fall CAUTION Failure to properly tighten the stem wedge bolt the handlebar binder bolt or the bar end exten sion clamping bolts may compromise steering action which could cause you to lose control and fall Place the front wheel of the bicycle between your legs and attempt to twist th...

Page 24: ...ebar and stem are correctly adjusted and tightened and allow proper steering Ensure that the handlebars are set correctly in relation to the forks and the direction of travel Check that the head set locking mechanism is properly adjusted and tightened If the bicycle is fitted with handlebar end extensions ensure they are properly positioned and tightened 3 Cranks and Pedals Ensure pedals are secur...

Page 25: ...re properly lubricated 7 Bearings Ensure all bearings are lubricated run freely and display no excess movement grinding or rattling Check headset wheel bearings pedal bearings and bottom bracket bearings 9 Accessories Ensure that all reflectors are properly fitted and not obscured Ensure all other fittings on the bike are properly and securely fastened and functioning Ensure the rider is wearing a...

Page 26: ...ediately if damage is found Some bicycles will require you to install your reflectors onto your bicycle WARNING Always wear a properly fitted helmet when riding a bicycle Falling off your bicycle without a helmet can cause serious injury or death Many states require specific safety devices It is your responsibility to familiarize yourself with the laws of the state where you ride and comply with a...

Page 27: ...ome already attached to the spokes of both the front and rear wheels To attach reflector to the wheel fit the groove in the reflector to a spoke that matches the groove The reflector should be mounted across from the valve stem and as close to the rim as possible The reflector should fit firmly between a single spoke on one side and two spokes on the other Use the supplied clip with two locking pr...

Page 28: ...screw to hold reflector assembly in place Finally adjust the reflector such that it is upright and facing away from the bike SEATPOST MOUNT REFLECTOR BRACKET ASSEMBLY Slide reflector over bracket as shown in diagram below and ensure that the tab clicks into the top hole of the bracket Insert one washer onto the hex bolt and insert hex bolt through the reflector bracket and around the seatpost Tigh...

Page 29: ... the left shift lever and the rear derailleur by the right To operate you must be pedaling forward You can not shift derailleur gears when you are stopped or when pedaling backwards Before shifting ease up on your pedaling pressure For a smooth gear change when approaching a hill shift to a lower gear BEFORE your pedaling speed slow down too much When coming to a stop shift to a lower gear first s...

Page 30: ...r through multiple gears by continuing twisting By twisting the left shifter forward or away from you a smaller chainwheel can be selected To select a higher gear twist the right shifter forward or away from you to engage a smaller rear cog To engage a larger front chainwheel twist the left shifter towards you NOTE Some bicycles may be equipped with a rear derailleur mechanism that works in revers...

Page 31: ...the handlebars which use two levers operated by the thumb and index finger To select a lower gear push the larger lower right shifter with your thumb to engage a larger rear cog One firm push shifts the chain one cog continuing to push will move the chain over multiple cogs Pulling the smaller upper right lever with your index finger to engage a smaller rear cog Pushing the larger lower left lever...

Page 32: ...ikes should be wiped over with a rust preventative fluid Store your bicycle under shelter Avoid leaving it in the rain or exposed to corrosive materials Riding on the beach or in coastal areas exposes your bicycle to salt which is very corrosive Wash your bicycle frequently and wipe or spray all unpainted parts with an anti rust treatment Make sure wheel rims are dry so braking performance is not ...

Page 33: ...on t cover with plastic as sweating will result which may cause rusting Please notice that your bicycle warranty does not cover paint damage rust corrosion dry rot or theft SECURITY It is advisable that the following steps be taken to prepare for and help prevent possible theft 1 Maintain a record of the bicycle s serial number generally located on the frame underneath the bottom bracket 2 Registe...

Page 34: ...o allow the wheel to pass through the brake pads easily 2 Place wheel into fork drop outs 3 Install retaining washers with raised lip pointed towards the fork and insert into the small hole of the fork blade 4 Install axle nut and securely tighten Make sure the wheel is centered between the fork blades 5 Spin the wheel to make sure that it is centered and clears the brake shoes Tighten the brakes ...

Page 35: ... levers are at a 45 degree angle below the handlebar Retighten the Binder Bolt to ensure the handlebar does not rotate in the stem After the handlebar stem has been fitted into the steer tube that is the top end of the fork and the two pieces made firm within the head tube the action of a stem bolt upon the wedge nut binds with the inside of the steer tube to form a solid steering column WARNING A...

Page 36: ... been installed in the factory and to change handlebar height requires moving height adjustment spacers from below the stem to above the stem or vice versa Otherwise you ll have to get a stem of different length or rise Do not attempt to do this yourself as it requires special knowledge and your bicycle should be taken to a professional bike shop for this adjustment WARNING A quill stem s Minimum ...

Page 37: ...or Phillips head screwdriver figure 1 Handlebar with grip shifter figure 2 Top mounted thumb shifter NOTE When assembling the bicycle or setting it up for a rider the shifters brake levers and bar ends may need to be rotated on the handlebars to a position that allows safe and easy operation of the controls FIGURE 1 FIGURE 2 WARNING Failure to properly tighten clamping bolts may cause sudden movem...

Page 38: ...n Check the tightness of the headset and the fork Rotate the fork checking for smoothness If it feels like the fork is binding then an adjustment will need to be made to the headset Move the fork in a push pull manner checking for tightness If any play is detected loosen the top nut shown on page 87 Recheck the rotation and tightness If necessary readjust until a smooth rotation is achieved withou...

Page 39: ... move it to the closed position so it is in line with the frame as pictured Ensure the lip on the binder clamp is fitted completely against the top of the seat tube of the frame With the seatpost inserted tighten the binder bolt securely Position the top of the seat parallel with the ground Push the front of the seat up and down to firmly mesh the serrations together The serrations must mesh compl...

Page 40: ...N CORRECT MINIMUM INSERTION INCORRECT MINIMUM INSERTION INCORRECT MAXIMUM INSERTION Reflector Bracket Minimum Insertion Mark Seatpost Maximum Seatpost Insertion Mark Minimum Seatpost Insertion Mark Do not insert below Maximum Insertion Mark insertion below Maximum Insertion Mark will block rear reflector visibility Use reflector bracket Minimum Insertion Mark to confirm rear reflector visibility w...

Page 41: ...33 Insert this end into frame Attach Seat Here Boot Minimum Insertion Mark NOTE Comfort style bicycles may be equipped with a suspension seatpost see diagram left ASSEMBLY ASSEMBLY ...

Page 42: ...bolted cotterless or boltless binder end may become loose with initial use refer to pages 96 100 for crank type identification and instructions for adjustment and maintenance Once the pedals have been installed remove the dust caps from the center of each crank arm Using a 14 mm socket wrench tighten the spindle nuts securely and replace the dust caps This tightening may have to be repeated during...

Page 43: ...e right brake arm and slide the brake cable under the tabbed washer Squeeze both brake arms together so the brake shoes hit the rim pull all slack out of the brake cable tighten the anchor bolt With the cable fitted the straddle holder should sit 10 20 mm above the reflector bracket Adjust the brake shoes using a 10 mm wrench so that they are parallel with the rim and are positioned 1 2 mm away fr...

Page 44: ...36 ASSEMBLY ASSEMBLY lbs ...

Page 45: ... brake arm and slide the cable under the retaining washer Pull the slack out of the cable making sure a distance of 39 mm or more remains between the end of the lead and the start of the anchor bolt Once the cable is secured to the brake arms engage the brake lever several times checking the position of the brake shoes at the rim The brake shoes should be 1 mm away from the rim when in a relaxed p...

Page 46: ...pring hole in the frame mounting boss and then secure the brake body to the frame with the link fixing bolt 2 While holding the shoe against the rim adjust the amount of shoe protrusion by interchanging the position of the B washers i e 6 mm and 3 mm so that dimension A is kept at 39 mm or more ...

Page 47: ...uter cable lead Set the cable with a clearance of 1 mm between each brake pad and the rim tighten the cable fixing bolt 5 Adjust the balance with the spring tension adjustment screws 6 Depress the brake lever about 10 times as far as the grip to check that everything is operating correctly and that the shoe clearance is correct before using the brakes 1 mm 1 mm ASSEMBLY ASSEMBLY ...

Page 48: ...ake pad should be about 0 5 1 0 mm farther from the rim than the front portion of the brake pad Brake pad aligned with the rim surface Pad and rim should be parallel Direction of rim rotation CAUTION Do not ride the bicycle until the brakes are functioning properly To test apply the brakes while trying to push the bike forward to make sure they will stop the bicycle Never ride a bicycle that is no...

Page 49: ...king Please read the specific instructions and warnings for the disk brakes supplied on your bicycle before riding your bicycle Disk brakes are extremely powerful You should take extra care in becoming familiar with brakes and exercise particular care when using them WARNING DISK GETS HOT Severe injury could result from contact with the hot disk Mind your legs as well as your hands CAUTION These b...

Page 50: ...argest cog Adjust the Low limit screw in quarter turn increments until the guide pulley and the largest cog are aligned vertically Again shift through each gear several times checking that each gear is achieved smoothly It may take several attempts before the rear derailleur and cable is adjusted properly See top drawing NOTE Some bicycles may be equipped with a rear derailleur mechanism that work...

Page 51: ...front shifter to the largest chainwheel If the chain does not go onto the largest chainwheel turn the High limit screw in 1 4 turn increments clockwise until the chain no longer falls off Some shifters may have an adjusting barrel to fine tune the adjusting of the chain location Turn the adjusting barrel clockwise will move the derailleur inboard towards the frame while turning it clockwise will d...

Page 52: ...in this manual WARNING There must be enough tension on the spring to hold the spring plate in place Failure to do this may cause the mechanism to fail Fail ure to maintain check and properly adjust the suspension system may result in suspension malfunction which can cause you to lose control and fall Changing suspension adjustment can change the handling and braking characteristics of your bicycle...

Page 53: ... season Please note that on some models the driver side crank arm must be removed from the spindle before attempt ing to work on the pivot After removing the fixing bolt the bushings may need to be tapped out using a drift punch or other blunt ended tool After disassembly and cleaning the parts should be lightly coated with a lithium based grease Reassemble the pivot bushing assembly and tighten t...

Page 54: ... 26 model bicycles come with a rear derailleur guard to protect the rear derailleur from damage To install remove the rear wheel axle nut on the drive side install the rear derailleur guard over the axle with the U shaped guard pointing down and retighten the axle nut The guard will sit between the frame and the axle nut Reflectors Attach the white reflector to the front reflector bracket and secu...

Page 55: ...mounting bolt and insert through brake bridge and fender bracket Place the other washer onto the mounting bolt and secure the mounting nut as shown above 3 Attach fender arms align the fender arm holes with the mounting holes on the fork end Then insert the mounting bolts through the fender arm holes to secure the bolts into the fork holes 4 Attach front wheel shown on page 26 ASSEMBLY ASSEMBLY ...

Page 56: ...cket Place the other washer onto the mounting bolt and secure the mounting nut as shown above 3 Attach fender arms align the fender arm holes with the mounting holes on the fork end Then insert the mounting bolts through the fender arm holes to secure the bolts into the fork holes 4 Attach front wheel shown on page 26 with retaining washer in place and axle nuts tight NOTE Be certain that all fend...

Page 57: ...n the basket against the basket rack 2 Slide the washer onto the mounting bolts 3 Insert mounting bolts through the basket 4 Slide additional washers and then mounting nuts onto the mounting bolts 5 Securely tighten the mounting nuts STEP 3 1 Position the basket against the basket rack of the head tube 2 Slide the washer onto the mounting bolts 3 Insert mounting bolts onto clamp 4 Slide additional...

Page 58: ... above STEP 2 1 Position the rack against the seatpost clamp 2 Slide the washer onto the mounting bolts 3 Insert mounting bolts onto clamp 4 Securely tighten mounting bolts STEP 3 1 Position the rack arm against the seat stay end 2 Slide the washer onto the mounting bolts 3 Insert mounting bolts through rack arm and then seat stay end 4 Securely tighten the mounting bolts ...

Page 59: ...move when applying pressure After all adjustments have been made shift through every gear several times at varying speeds This will ensure all your adjustments are correct and will allow you to pinpoint any trouble areas If you encounter any problems refer top the appropriate section and make any necessary adjustments Check the tire pressure and inflate each tire to the recommended PSI as stated o...

Page 60: ...iscarded Assemble your bicycle following the steps that pertain to your model NOTE Your bicycle may be equipped with different style components than the ones illustrated FRONTWHEEL 1 Make sure the brakes are loose enough to allow the wheel to pass through the brake pads easily 2 Place wheel into fork drop outs 3 Install retaining washers with raised lip pointed towards the fork and insert into the...

Page 61: ...s to correct position After the handlebar stem has been fitted into the steer tube that is the top end of the fork and the two pieces made firm with in the head tube the action of a stem bolt upon the wedge nut binds with the inside of the steer tube to form a solid steering column IMPORTANT NOTE Test the security of the handlebar stem within the steer tube of the front fork by clamping the front ...

Page 62: ...e frame observing the Minimum Insertion Mark on the seatpost Position the top surface of the seat parallel with the ground The serrations on the seat clamp must mesh completely with the seat frame serrations push the front of the seat up and down to align the serrations Securely tighten the seat clamp Securely tighten the bolts on the seatpost clamp If your bicycle is equipped with a quick release...

Page 63: ... crank set for correct adjustment and tightness before riding your bicycle New boltless cranks may become loose with initial use refer to page 100 for crank type identification and instructions for adjustment and maintenance Tightening may have to be repeated during initial use WARNING Attachment of an incorrect pedal into a crank arm will cause irreparable damage Unless the shoulder of the pedal ...

Page 64: ...on at all times SIDE PULL BRAKE Loosen the cable anchor nut and thread the brake cable through it Tighten the nut by hand until it holds the cable in place Squeeze the brake arms together against the rim of the wheel Loosen the nuts on the brakes shoes and turn until they match the angle of the rim Tighten the nuts securely Loosen the cable anchor nut and squeeze both brake arms together so that b...

Page 65: ...ugh it Adjust the brake shoes using a 10 mm wrench and 5 mm Allen key so that they are parallel with the rim and are positioned 1 2 mm away from the rim Several adjustments may be necessary to achieve the correct brake position CANTILEVER BRAKES WARNING When assembling or adjusting the brakes make sure the cable anchor is tight Failure to securely tighten the nut could result in brake failure and ...

Page 66: ...58 ASSEMBLY ASSEMBLY ...

Page 67: ...5 mm Allen wrench and loosen the 5 mm Allen bolt For the nondrive side left turn the spring tension nut with the 13 mm wrench and tighten the 5 mm Allen bolt The tension on each side should be achieved hold the tension nut with the 13 mm wrench and tighten the 5 mm Allen bolt The tension on each side should be equal so that the brake arms move the same distance when the brake is activated U brakes...

Page 68: ...position by tightening nut securely TRAINING WHEEL WARNING Do not ride the bicycle until the brakes are func tioning properly To test apply the brakes while trying to push the bike forward to make sure they will stop the bicycle ROTORS Some freestyle BMX bicycle come equipped with a detangler system that will allow the handlebar to spin 360 degrees without binding the cables CAUTION Bicycles not e...

Page 69: ... plate to make the bearing parallel to the upper plate Use a 10 mm wrench to tighten the locknut on the left adjusting barrel loose 4 Screw the lower cable adjusting barrel into or out of the lower plate until they are as close to the bearing as they can get without touching it 5 Screw the cable adjuster on the upper cable splitter out until all slack is removed from the upper cable Then screw the...

Page 70: ...62 ASSEMBLY ASSEMBLY WARNING Failure to adjust correctly may result in loss of braking power and personal injury 1 mm 1 32 inch ...

Page 71: ...he nut clockwise until snug Repeat for all the remaining pegs THREADED This style of peg is threaded to fit the axle Make sure axle nuts are tight using a 15 mm wrench or adjustable wrench Place the domed washer if supplied over the axle and axle nut and then thread the peg on the axle turning clockwise until snug PLEASE NOTE Not all axles are able to accept axle pegs Please consult your local bic...

Page 72: ...s are tightened securely and that the reflectors are properly angled Pads If your bike is supplied with pads wrap the foam inner cushion around the appropriate bar Place the outer cover over the inner cushion and press the Velcro together securely Turn the pad so the Velcro faces the ground Chainguards If not already attached attach the chainguard to the bicycle frame using the hardware provided S...

Page 73: ...list don t assume that the way things work on your new bike is the same as how they work on older bikes Be sure to read and to understand this section of the manual If you have even the slightest doubt as to whether you understand something talk to your local bicycle specialist Call 1 800 551 0032 with any further questions HOW THINGS WORK HOW THINGS WORK ...

Page 74: ...heel rim in the fork use a six inch adjustable wrench or a 15 mm box wrench to tighten the axle nuts securely 3 Close the brake shoes then spin the wheel to make sure that it is centered in the frame and clears the brake shoes C Removing a Bolt On Rear Wheel 1 Open the rear brake shoes 2 Shift the rear derailleur to high gear the smallest rear sprocket and pull the derailleur body back with your r...

Page 75: ...clamping force WARNING Riding with an improperly tightened seatpost can allow the saddle to turn or move and cause you to lose control and fall Therefore 1 Ask your local bicycle specialist to help you make sure you know how to correctly clamp your seatpost 2 Understand and apply the correct technique for clamping your seatpost quick release 3 Before you ride the bike first check that the seatpost...

Page 76: ...force and all directional control You need to practice slowing and stopping smoothly without locking up a wheel The technique is called progressive brake modulation Instead of jerking the brake lever to the position where you think you ll generate appropriate braking force squeeze the lever progressively increasing the braking force If you feel the wheel begin to lock up release pressure just a li...

Page 77: ...in with 2 Adjusting your Brakes If either brake lever on your bike fails the Mechanical Safety Check you can restore brake lever travel by turn ing the brake cable adjusting barrel counterclockwise then lock the adjustment in by turning the barrel s lock nut clockwise as far as it will go If the lever still fails the Mechanical Safety Check or if you have any question about whether your brakes are...

Page 78: ...ownshift is a shift to a slower gear one which is easier to pedal An upshift is a shift to a faster harder to pedal gear What s confusing is that what s happening at the front derailleur is the opposite of what s happening at the rear derailleur for details read the instructions on Shifting the Rear Derailleur and Shifting the Front Derailleur below For example you can select a gear which will mak...

Page 79: ...forward 4 Shifting the Front Derailleur The front derailleur which is controlled by the left shifter shifts the chain between the larger and smaller chainrings Shifting the chain onto a smaller chainring makes pedaling easier a downshift Shifting to a larger chainring makes pedaling harder an upshift Which gear should I be in The combination of largest rear smallest front gears is for the steepest...

Page 80: ...t B Which gear should I be in The numerically lowest gear 1 is for the steepest hills The numerically largest gear 3 5 7 or 12 depending on the number of speeds on your hub is for the greatest speed Shifting from an easier slower gear is called a downshift It is not necessary to shift gears in sequence Instead find the starting gear for the conditions a gear which is hard enough for quick accelera...

Page 81: ...performance tires the specific recommended use are marked on the sidewall of the tire The part of this information which is most important to you is Tire Pressure WARNING Never inflate a tire beyond the maximum pressure marked on the tire s sidewall Exceeding the recommended maximum pressure may blow the tire off the rim which could cause damage to the bike and injury to the rider and bystanders T...

Page 82: ...it back out unless you want it to The tire valve on your bicycle is like the valve on a car tire To inflate the tire tube remove the dust cap and push the air hose or pump fitting onto the end of the valve stem To let air out of the valve depress the pin in the end of the valve stem with the end of a key or other appropriate object The Schraeder is like the valve on a car tire To inflate a Schraed...

Page 83: ...ck and properly adjust the suspension system may result in suspension malfunction which may cause you to lose control and fall WARNING If your bike has suspension the increased speed you may develop also increases your risk When braking the front of a suspension bike dips You could lose control and fall if your skill is not up to handling this system Get to know how to handle your suspension syste...

Page 84: ...etermined by everything from your riding style to geographic location If you want to learn to do major service and repair work on your bike Ask your local bicycle repair shop to recommend a book on bicycle repair Ask your local bicycle repair shop about the availability of bicycle repair courses in your area We recommend that you ask your local bicycle repair shop to check the quality of your work...

Page 85: ...ave a loose headset Have your dealer check it Lift the front wheel off the ground and swing it from side to side Feel smooth If you feel any binding or roughness in the steering you may have a tight headset Have your dealer check it Grab one pedal and rock it toward and away from the centerline of the bike then do the same with the other pedal Anything feel loose If so have your dealer check it Ta...

Page 86: ...r lubricate remove excess lube to prevent dirt build up Never use a degreaser to lubricate your chain WD 40 WARNING Like any mechanical device a bicycle and its components are subject to wear and stress Different materials and mechanisms wear or fatigue from stress at different rates and have different life cycles If a component s life cycle is exceeded the component can suddenly and catastrophica...

Page 87: ...hese can render your brakes ineffective Do not clean them with oily or greasy materials When cleaning use a clean rag or wash with soapy water rinse and air dry Don t ride while they re wet When lubricating your bicycle don t get oil on the rim braking surfaces CAUTION Wheels must be true for rim brakes to work effectively Wheel truing is a skill which requires special tools and experience Do not ...

Page 88: ... or flat spots and that there are no cuts or other damage Valves Make sure valve caps are fitted and that valves are free from dirt A slow leak caused by the entry of the dirt can lead to a flat tire and possibly a dangerous situation RECOMMENDED TIRE PRESSURES The recommended pressure molded on the sidewall of your bicycle tires should match the following chart Use this as a general guide CAUTION...

Page 89: ...n 5 Recheck that the wheel can turn freely without excessive side play HOW TO FIX A FLAT TIRE If you need to repair a tire follow these steps 1 Remove the wheel from the bicycle 2 Deflate the tire completely via the valve 3 Press one side of the tire bead up over the edge of the rim NOTE Use tire levers not a screwdriver otherwise you may damage the rim 4 Remove the tube leaving the tire on the ri...

Page 90: ...t the other side of the tire by pushing the edge toward the center of the rim Start on ether side of the valve and work around the rim 12 Before the tire is completely mounted push the valve up into the rim to make sure the tire can sit squarely in position 13 Fit the rest of the tire rolling the last most difficult part on using your thumbs NOTE Avoid using tire levers as these can easily punctur...

Page 91: ... thin film of grease to the part including the wedge that will be inserted into the frame The height of the handlebar can be adjusted to suit your comfort preference If the stem is removed from the steering column you will notice a mark about 65 mm up from the bottom with the words Max Height or Minimum Insertion WARNING A quill stem s Minimum Insertion Mark must not be visible above the top of th...

Page 92: ...d remain in an approximately upright position but can be angled back or forward slightly for comfort On MTB and racing style bicycles the handlebar is usually tightened in the stem by a single Allen key bolt or hexagonal bolt On BMX style bicycles there may be four clamping bolts Make sure when setting the handlebars in the fork that the curved rake of the fork is angled to the front of the bicycl...

Page 93: ...events the grip from interfering with Grip Shift rotation 5 Slide handlebar grip over handlebar Thread the cable inner wire through cable housings and frame and attach to derailleur Make sure that the cable is in the V groove at the derailleur attachment bolt If trimming the cable housing is necessary be sure to replace the housing end cap 6 Adjust indexing 7 Slide rear Grip Shift over right side ...

Page 94: ...ed around the stem or frame in a manner that prevents smooth operation or hampers control of the bicycle Also check that the housing is seated properly into each cable stop of the bicycle It is recommended that the cables and housing are replaced at least every riding season to prolong the life of your bicycle WARNING Always check the brake cable routing to ensure smooth and free application of th...

Page 95: ...t the bearings are too tight NOTE If your bike is equipped with a threadless headset please see a qualified specialist for repairs and adjustments Adjustment Loosen the headset top nut and lock washer or remove them completely along with the reflector bracket if fitted Turn the adjusting cup clockwise until finger tight Replace the lock washer or reflector bracket and retighten the top nut using s...

Page 96: ...at will be inserted into the frame Reinsert adjust and tighten the seatpost in the frame WARNING Under no circumstance should the seatpost project from the frame beyond its Minimum Insertion or Maximum Extension mark If your seatpost projects from the frame beyond these markings the seatpost or frame may break which could cause you to lose control and fall After any saddle adjustment be sure to ti...

Page 97: ...t in the frame without tightening Adjust it to the desired angle and position and tighten the clamping mechanism securely Note that the type of binder bolt may be either a hexagonal bolt an Allen head bolt or a quick release mechanism Test the security by grasping the seat and trying to turn it sideways If it moves you will need to further tighten the binder bolt NOTE Remember that the Minimum Ins...

Page 98: ...ered to the distance between the handlebar grip and the lever as required When making adjustments with the cable adjusting barrel attached to the brake lever it is recommended that the corresponding slots on the brake lever cable adjusting barrel and lock nut not be aligned The brake pads should be checked for correct positioning and tightness before every ride and the various bolts and nuts at le...

Page 99: ...adjust the cable length Screw the barrel adjuster 3 4 of the way in squeeze the pads against the rim undo the cable anchor bolt and apply full force to the brake lever to test then fine tune using the barrel adjuster If one pad is closer to the rim than the other loosen the fixing nut at the back of the brake apply the brake to hold it centered and retighten the fixing nut WARNING Ensure the brake...

Page 100: ...m from the rim When correct retighten the locknut If the pad cannot be set close enough to the rim in this manner you may have to adjust the length of the brake cable To adjust the brake cable length the main brake cable routes through a link cable to the anchor bolt on one of the brake arms Squeeze both arms together so the brake shoes hit the rim loosen the cable anchor bolt and pull all the sla...

Page 101: ...e makes first contact To do this fit an Allen key into the brake pad holding bolt loosen the fixing nut and adjust Move the brake pad along its mounting post to alter the distance from the rim and move the curved adjustment washer to alter the angle of the pad DETAILED MAINTENANCE DETAILED MAINTENANCE ...

Page 102: ... of the following areas Check that the pedals are tightened securely against the crank arm If pedals are allowed to become loose they will not only be dangerous but will also cause irreparable damage to the cranks Check that pedal bearings are properly adjusted Move the pedals up and down and right and left and also rotate them by hand If you detect any looseness or roughness in the pedal bearings...

Page 103: ...ght to right and left to left for assembly Insert the correct pedal into the crank arm and begin to turn thread with your fingers only When the axle is screwed all the way in securely tighten using a 15 mm narrow open ended wrench so that the shoulder of the pedal spindle is securely tightened against the crank arm If removing a pedal remember that the right pedal axle must be turned counterclockw...

Page 104: ... checked for correct adjustment and tightness every month Cotterless crank axle nuts must be kept tight and the bottom bracket bearings must be properly adjusted Remove the chain and try to move the cranks from side to side with your hands The cranks should not move on the axle and there should be only very slight movement in the bottom bracket Next spin the cranks If they don t spin freely withou...

Page 105: ...2 Remove the left pedal by turning the spindle clockwise 3 Remove the left side locknut by turning it clockwise and remove the keyed lockwasher 4 Remove the adjusting cone by turning it clockwise with a screwdriver 5 Remove the left ball retainer slide the crank assembly out of the frame to the right and remover the right ball retainer Clean and inspect all bearing surfaces and ball retainers and ...

Page 106: ...ise 4 Remove the left ball retainer and slide the axle out of the frame to the left 5 Remove the right side fixed cup by turning it counterclockwise and remove the right ball retainer Clean and inspect all bearing surfaces and ball retainers and replace any damaged parts Pack the ball bearing retainers with grease then reassemble in reverse of the above procedure Cotterless Crank Removal To remove...

Page 107: ...cover Adjustment After Use 1 Remove dust cap 2 Tap the crank arm lightly with a mallet 3 Retighten the flange nuts and refit the dust caps CAUTION New cotterless cranks may become loose with initial use Tighten the flange nuts see illustration below after several hours or riding and repeat it two or three times after further use Cranks should then remain tight Mallet DETAILED MAINTENANCE DETAILED ...

Page 108: ...der end 2 and the end screw 1 The binder end cap screw 2 needs to be very tight If a torque wrench is available tighten to 215 in lbs 2 Tap the crank lightly with a mallet to remove or replace the crank Note on the right side the crank arm is riveted to the chainwheel and both will be removed or replaced together What is shown is the left side 3 Repeat step one CAUTION New binder boltless cranks m...

Page 109: ...oil on the tires or rim braking surfaces Adjustment and Replacement On derailleur geared bicycles the rear derailleur automatically tensions the chain To adjust the chain on single speed freewheel coaster hub braked or 3 speed hub geared bicycles 1 Loosen the rear axle nuts and coaster brake arm clip if fitted and move the wheel forward to loosen or backward to tighten in the frame 2 When correctl...

Page 110: ...railleurs on multi speed bikes with protruding rivet facing away from the bicycle Bring the two ends together within the special tool and punch the rivet into place Be sure not to push rivet too far through side plate FREEWHEEL Inspection Like the chain the freewheel must be kept clean and well lubricated If the chain has become worn and needs replacing then it is likely that the freewheel will al...

Page 111: ...e advantages of reliability and easy operation The brake is operated by applying back pedal pressure and allows the rider to coast without pedaling if desired There are several models of coaster hubs available and the internal mechanisms are very complex They require infrequent attention as far as lubrication adjustment or replacement of internal parts if needed this should be left to a specialist...

Page 112: ...e operation of the rear derailleur first then the front The rear derailleur should shift the chain cleanly from one cog to the next without hesitation On index system equipped bicycles each notched position in the shifter must equate to a new gear position After shifting the rear derailleur should not rub on the chain The derailleur should never cause the chain to fall off the inner or outer freew...

Page 113: ... the front shifter into the largest gear and pedal the bike so the chain jumps to the largest chainwheel If the chain does not shift onto the largest chainwheel you will need to turn the High limit screw counterclockwise until the chain moves to the largest chainwheel If the chain falls into the pedals the High limit screw has been turned too far You will need to readjust the High screw clockwise ...

Page 114: ...lined up vertically Remove any slack in the cable by pulling it taut then reconnect the cable and tighten the cable anchor bolt securely 3 Some derailleurs have an adjusting barrel see drawings Use the adjusting barrel to fine tune the adjustment of the chain location Turning the adjusting barrel clockwise will move the derailleur inboard towards the wheel while turning it counterclockwise will di...

Page 115: ...eflectors These are an important safety and legal requirement and should remain securely fitted and in good clean conditions at all times Periodically inspect all reflectors brackets and mounting hardware for signs of wear or damage Replace immediately if damage is found DETAILED MAINTENANCE DETAILED MAINTENANCE ...

Page 116: ...djustment Replace chainring sprockets and chain Replace chain Lubricate or replace link Seek advice at a bicycle shop Excessively worn chipped chainring or freewheel sprocket teeth Chain worn stretched Stiff link in chain Non compatible chain or chainring or freewheel Lubricate tighten or replace cables Adjust derailleurs Adjust indexing Derailleur cables sticking or stretched or damaged Front or ...

Page 117: ...in the rim or rim out of true Brake mounting bolts loose Brakes out of adjustment Fork loose in head tube Axle broken Wheel out of true Hub comes loose Headset binding Hub bearings collapsed Quick release mechanism loose True wheel or take to a bike shop Tighten bolts Center brakes and or adjust brake block toe in Tighten headset Replace axle True wheel Adjust hub bearings Adjust headset Replace b...

Page 118: ...er previous puncture Tire pressure too low Spoke protruding into rim Align wheels correctly Adjust tighten handset Take bike to a bike shop for possible frame realignment Tighten stem bolt until stem and fork are unified Use the between knee test and if loose tighten stem bolt until it passes the test Wheels not aligned in frame Headset loose or binding Front forks or frame bent Stem wedge bolt no...

Page 119: ...ned If you re going to ignore our recom mendations and go extreme anyway be smart about it Always wear a full face helmet body armor full finger gloves and protective clothing Choose a bike that s right for you your riding terrain prob ably not ours and check it often for signs of fatigue or other trouble And most importantly know your limitations and stay within them Practice Stay in control care...

Page 120: ...r the Bicycle Frame and Fork Two Years On All Other Component Parts No other express or implied warranty is given Dynacraft will replace without charge the bicycle frame fork or those component parts that are determined by Dynacraft to be defective in materials or manufacture under normal use and service during the applicable warranty period The original purchaser will be responsible for any and a...

Page 121: ...zed competition or commercial activity The bicycle frame fork and component parts have been manufactured for use by average riders and the bicycles are not intended for trick riding ramp riding jumping aggressive riding and any similar extreme activities while such uses may damage the bicycle frame fork and or component parts such use will void this warranty This does not mean we assume any respon...

Page 122: ...American Canyon CA 94503 Customer Service 1 800 551 0032 Monday Friday 7 00 am to 4 00 pm Pacific Time WARRANTY Dynacraft s bicycles are intended for the average rider to use on streets roads and bicycle approved off road trails and 20 inch BMX and Free Style bicycles are for non competition youth play including limited trick riding and stunts that are safe and within the rider s experience and li...

Page 123: ...115 Cut along dotted line before mailing Cut along dotted line before mailing Dynacraft BSC Inc 89 South Kelly Road American Canyon CA 94503 ...

Page 124: ...h of Person s Whose Name Appears Above Place of Purchase Check the 2 most important reasons you selected this brand of bicycle Who selected this bicycle Who is using this bicycle Friend or relative owns store Father of user Appearance Style Grandparents Color Male Newspaper ad Mother of user Special features Relative Other please specify Female Price Child Character Other Cut along dotted line bef...

Page 125: ...e com for more information Or callCustomerService at 1 800 551 0032 7am 4pm Pacific Time Please have the following information available when you call Model Number example 8XXX XX Production Date example 2014 XX XX Serial Number example XXXXXXXXXXX ...

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