YCF FACTORY SP2 Owner'S Manual Download Page 8 | Manualshive

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7

English

WEIGHT GUIDELINES

Your YCF Mini motorcycle is designed for use by one experienced adult driver. Attempting to carry a passenger would
be the likely result of a dangerous situation, with subsequent serious injury.

Maximum load capacity: 90 kg (198 lb.)
(Including the weight of the driver and the protective clothing).

Load Capacity Guidelines
We do recommend that you do not carry any objects on this Mini motorcycle.

•

Never exceed the maximum load value.

•

Always check the wear and inflating pressure of both tires before riding.

Warning

Carrying a passenger may cause an accident and you can be seriously hurt or death may result. Do
not carry a passenger or any baggage, as it may cause an accident that can lead to serious injury or
death.

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Summary of Contents for FACTORY SP2

Page 1: ... ...

Page 2: ...and is meant for recreational use or for use in competitions It should be used on special and certified tracks only away from public paths The use of this mini motorcycle implies full acceptance of all notices warnings and safety instructions as indicated in the Owner s Manual and portrayed by the safety sticker on the mudguard The importer and the retailer are not responsible for any inaccuracies...

Page 3: ...out of your mini motorcycle in terms of safety This manual has to be used to maintain and use all the YCF bikes except the electric one which has its own manual Off road riding although an exciting pastime can also be dangerous so please follow the techniques and instructions provided in this Owner s Manual It is essential that you adhere strictly to the instructions mentioned therein for your own...

Page 4: ... PREPARING TO RIDE 19 SECTION II MAINTENANCE OVERHAUL 27 II 1 Maintenance program 27 MAINTENANCE PLANNING 30 II 2 Main parts specifications tables 32 II 3 Torque tables 35 II 3 Main parts adjustments and preventive maintenance 40 II 4 Cleaning 68 SECTION III TROUBLE SHOOTING TIPS 69 SECTION IV MISCELLANEOUS INFORMATION 70 MAINTENANCE LOG BOOK 75 ...

Page 5: ...her helpful tips including using and stopping your mini motorcycle for safe riding Once you are familiar with these instructions you will be able to explain other drivers that you know how to use all its features and possibilities This Owner s Manual has been prepared to acquaint you with the rules and regulations and help you have a complete working knowledge about the mini motorcycle and its par...

Page 6: ...d to be operated at night as not fitted with lighting and light signaling devices 5 This Mini motorcycle is designed for use by one experienced adult driver only Do not attempt to carry a passenger 6 We do recommend that you are in good physical condition and possess good athletic ability To ride safely off road drivers need good hand eye coordination agility a sense of balance and good judgments ...

Page 7: ... death 11 The Mini motorcycle owner alone is responsible for his her safety and should always have a full insurance cover against damage to property or damages caused to himself herself or to others 12 Do not remove any safety devices covering the moving parts or the heating system 13 Consider the high vibration environment when riding your mini motorcycle ...

Page 8: ...e weight of the driver and the protective clothing Load Capacity Guidelines We do recommend that you do not carry any objects on this Mini motorcycle Never exceed the maximum load value Always check the wear and inflating pressure of both tires before riding Warning Carrying a passenger may cause an accident and you can be seriously hurt or death may result Do not carry a passenger or any baggage ...

Page 9: ...fications YCF suggests neither to remove any original device nor to modify the mini motorcycle in any way that could change its shape or its working including its handling stability and the effectiveness of the braking system For this reason any modifications made to the mini motorcycle e g alteration and or removal of components make the warranty null and void and relieve YCF of all responsibilit...

Page 10: ...he location of safety labels on your mini motorcycle Some of the labels warn you against potential hazards likely to cause serious injury Others provide important safety information Please read these labels carefully and do not remove them under any circumstances ...

Page 11: ...cle Please review this section thoroughly to become familiar with it and get tips on how to keep your Mini motorcycle riding experience enjoyable A Fuel tap B Cold start lever choke lever C Kick starter D Handlebar position adjustment E Throttle twist grip F Front brake lever G Clutch lever H Start Stop switch I Gear lever J Rear brake pedal K Side stand ...

Page 12: ...tch lever Front brake cable Carburetor Exhaust pipe protection Front shock absorber fork Intake Anti parasite and spark plug Kick starter Oil filler cap Rear brake caliper Engine skid plate Engine drain nut Front wheel axle Front brake disk Rear brake pedal ...

Page 13: ...PONENTS LOCATION Rear left side Start stop switch Throttle twist grip Front brake lever Fuel tank cap Steering stem Seat Fuel tap Muffler Rear shock absorber Mud guard Gear lever Front brake caliper Chain Rear wheel axle ...

Page 14: ...you have finished riding turn the fuel tap lever to the OFF position RESERVE Turning the fuel tap to RES allows fuel to flow from the reserve fuel supply to the carburetor Reserve fuel 0 98 L 0 26 U S Gallons it is imperative that you fill up the fuel tank as soon as possible to avoid running out of fuel Once the fuel tank refilled turn the fuel tap lever back to the ON position ON OFF RESERVE ...

Page 15: ...r Located on the right handlebar it is the lever in front of the right hand grip that actually starts the mini motorcycle Using your right foot swivel the kick starter and press down while turning the throttle Press all the way down and let the kick starter swing back into its initial position Cold starter lever OFF position B B Cold starter lever ON position ...

Page 16: ...the handlebar position front rear according to the rider size Installation Disassemble the handlebar in order to access to the two BTR screws you have now the possibility with the two threaded holes to move forward or move back the bar mount and adjust the handlebar position ...

Page 17: ...y using your right hand To decelerate rotate the twist grip forward Do not release your hands while riding as serious injury or death may occur Always keep both hands on the handlebars F Front brake lever Located on the right side of the handlebar it is used to slow or stop your mini motorcycle To apply the front brakes pull the lever down towards you Do not pull the lever too hard to avoid accide...

Page 18: ...ICE it is always necessary to use the clutch lever to change speeds at the risk of damaging the gearbox If your motorcycle is provided with a semi automatic engine there will be no clutch lever as there is it not needed H Start stop switch Located next to the left throttle the start stop switch enables and disables the engine instantly If you lose traction of the mini motorcycle or crash and skid ...

Page 19: ...ge neutral Only shift into neutral when at a complete standstill Pull in the clutch and downshift into first gear J Rear brake pedal Using your right foot press down the pedal to reduce the pace of the motorcycle according to the situation K Side stand It is used to support your mini motorcycle so that it stands straight up while parked While still seated on the mini motorcycle use your left foot ...

Page 20: ...e the mini motorcycle Failure to observe the indications outlined in this Owner s Manual can lead to accidents with subsequent serious injury or even death PILOT PROTECTIVE EQUIPMENT Proper safety gear is integral to your safety when riding a mini motorcycle While riding your mini motorcycle make sure that you wear a properly fitted and approved helmet protective goggles gloves elbow knee wrist sl...

Page 21: ...you carry out the checks described below thoroughly before each ride to ensure your mini motorcycle is in perfect working order Visually inspect the following components before riding your mini motorcycle Fuel Unscrew filler cap and check level Refuel as required Also make sure that the filler cap is securely in place and closed Leaks Check the underside of the mini motorcycle for any fuel oil or ...

Page 22: ... bolts Check that all nuts and bolts are secure using the relevant socket wrench Conduct both a pre and post ride inspection Tighten as appropriate Throttle twist grip Check the free play of the throttle and adjust as appropriate Check that grip rotates smoothly and returns to closed position when released Brakes Pull lever and apply both the front and rear brakes to check brake operation Lubricat...

Page 23: ...cold pull up the choke to engage the lever kick start the mini motorcycle while at the same time letting off some gas To do this use your right foot to firmly and quickly press down on the kick start lever NB Due to the small size of the mini motorcycle there is no need to apply excessive force to kick the engine over after warming up the engine for a short time return the choke lever to its origi...

Page 24: ...ressure while releasing the throttle 2 Make sure to press the clutch lever hand grip using your left hand before coming to a complete stop 3 Shift down through the gears using engine braking to also aid the slowing effect 4 Cornering be careful when applying the brakes with the mini motorcycle leaned into a corner as it may slip which could lead to an accident Reduce speed BEFORE entering the curv...

Page 25: ...e opposite side of the handlebar and front corner of the trailer Also wrap a tie down strap around the rear frame of the mini motorcycle 5 Tighten the straps until the front suspension is approximately half way compressed 6 Attach the straps to the anchor hooks of your transport vehicle provided for this purpose CAUTION Always use approved motorbike tie down straps Do not use any standard ropes as...

Page 26: ...el and carburetor tanks This will reduce the chances of the fuel becoming contaminated 7 Empty the carburetor into an approved petrol container check with local authorities regarding used fuel disposal obligations 8 Remove the spark plug Spray fogging oil directly into the cylinder and kick the engine over a few times so that the cylinder gets coated Put the spark plug back 9 Place the mini motorc...

Page 27: ...immediately wipe the overflown fuel with a clean cloth RESTART AFTER IMMOBILIZATION After your mini motorcycle has been stored for any period of time it is imperative to follow these guidelines to ensure a proper return to service 1 Remove the cover 2 Clean the entire motorbike Depending on storage conditions you may be able to wipe down the mini motorcycle with a damp cloth to remove any loose du...

Page 28: ... operations and keep your mini motorcycle in perfect running order provided you possess the required skills It is mandatory that you perform the recommended maintenance as outlined in this section This will prevent major repairs due to dysfunction or neglect Keeping your mini motorcycle Maintenance Book accurately updated is also important so that you can keep track of your maintenance work in ord...

Page 29: ...lure to observe the indications provided can reduce performance and shorten the life of your mini motorcycle GENERAL MAINTENANCE AND SERVICE Performing routine maintenance service and adjustments is essential to a safer mini motorcycle riding Please follow the guidelines as outlined in this Owner s Manual for procedures that will enhance your motorcycle experience and make your mini motorcycle per...

Page 30: ...t perform the required maintenance on a slope as this could result in a severe accident Never clean the parts or accessories using petrol or other highly flammable cleaning agents They must be cleaned using agents such as kerosene only YCF designed a comprehensive maintenance schedule to assist you with keeping your mini motorcycle in perfect running order and help you avoid preventable mechanical...

Page 31: ...lter Clutch control system Front sprocket Fuel lines and connexions Fuel tank cap Drain engine oil Anti parasite Spark plug cleaning Spark plug gap adjustment Throttle free play adjustment Valve adjustment Caption to be performed by an accredited YCF dealer check adjust lubricate tighten as required and clean replace if needed ...

Page 32: ...ed and clean replace if needed FREQUENCY PART The first 3 hours Periodicity Each ride 30 hours 60 hours CYCLE PARTS Brake pads and brake discs Drive chain Front fork Screws nuts and lock General lubrication Rear shock absorber Rear sprocket Side stand Steering steam bearings Swing arms bearings Tyres spokes and rims ...

Page 33: ... YCF 1 litre Recommended fuel Unleaded gasoline octane rating 95 or higher E5 GB symbol LUBRICANTS Engine oil capacity After drain 0 7 litre After disassembly 0 9 litre Oil pump rotor Standard Repair limit Tip clearance 0 15 0 20 Body clearance 0 15 0 21 0 27 Side clearance 0 03 0 09 0 15 Air filter oil MOTUL AIR FILTER OIL SPRAY Engine oil MOTUL 5100 or 7100 10W40 synthetic oil Drive chain lubric...

Page 34: ...5cc 6 5 7500 Electric Kick Semi automatic 4 N 1 2 3 4 START F125 BIGY 125MX 125cc 6 5 7500 Kick Manual 4 N 1 2 3 4 PILOT F125 125cc 6 5 7500 Kick Manual 4 N 1 2 3 4 PILOT F150 BIGY 150MX 150cc 9 7500 Kick Manual 4 N 1 2 3 4 SM F125S 125cc 6 5 7500 Kick Semi automatic 4 N 1 2 3 4 SM F150 150cc 6 5 7500 Kick Manual 4 N 1 2 3 4 FACTORY SP2 BIGY F150MX 150cc 9 7500 Kick Manual 4 N 1 2 3 4 FACTORY SP3 ...

Page 35: ...POSITION INDICATED IN THIS TABLE FACTORY SETTING WITH SPARK ARRESTOR WITHOUT SPARK ARRESTOR YCF 50A 50 55 38 1 1 LITE F88S START F88SE 85 90 15 1 5 3 LITE F125 START F125 START F125SE 95 100 15 1 1 PILOT F125 95 100 15 2 1 PILOT F150 95 100 15 2 2 FACTORY SP2 100 105 15 2 2 FACTORY SP3 118 118 42 1 3 SM F125S 95 100 15 1 1 SM F150 105 110 15 2 2 BIGY 125MX 95 100 15 2 1 BIGY 150MX 95 100 15 2 2 BI...

Page 36: ... nut pan head screw 6 9 8 1 00 6 mm pan head screw 8 8 0 9 8 mm hex bolt and nut pan head screw 6 22 2 2 6 mm flange bolt 8 mm head small flange 8 8 0 9 10 mm hex bolt and nut pan head screw 6 34 3 5 6 mm flange bolt 10 mm head and nut 12 1 2 12 mm hex bolt and nut pan head screw 6 54 5 5 8 mm flange blot and nut 26 2 7 10 mm flange bolt and nut 39 4 0 NOTES 1 Apply locking agent to the threads 2 ...

Page 37: ...le clamp front fork top 27 7 Rear shock nut 29 8 Handle bar clamp 24 9 Muffler 29 10 Bolts on discs front rear brakes 35 11 Sprocket 32 12 Chain guard 20 13 Foot peg engine mount bolt 24 14 Side stand 35 15 Front brake calliper 24 16 Front brake reservoir 13 17 Lock nut for steering stem 54 18 Lower triple clamp bolt front fork bottom 20 19 Lower handle bar clamp 35 20 Oil drain bolt 24 ...

Page 38: ...mp attachment screw 3 6 7 8 0 8 Oil pump cover attachment screw 3 5 4 9 0 5 CYLINDER HEAD VALVES SPECIFICATIONS QTY Thread DIA mm Torque N m kgf m Cylinder head acorn head 3 6 11 1 1 Cylinder nut 1 6 11 1 1 Rocker arm cover bolt on right side 2 6 9 8 1 0 Camshaft gate entry valve bolt 2 5 8 8 0 9 CYLINDER PISTON QTY Thread DIA mm Torque N m kgf m Drive chain sprocket mounting bolt 1 8 9 8 1 0 ALTE...

Page 39: ...NE SYSTEM QTY Thread DIA mm Torque N m kgf m C Clamp screw 1 4 1 0 0 01 IGNITION SYSTEM QTY Thread DIA mm Torque N m kgf m Ignition coil bolt 1 5 5 9 0 6 ENGINE ASSEMBLY QTY Thread DIA mm Torque N m kgf m Engine mounting bolt nut 2 8 31 3 2 Drive gear box mounting plate nut 2 6 12 1 2 REAR WHEEL BRAKES SHOCK ABSORBER QTY Thread DIA mm Torque N m kgf m Spoke 32 BC 2 9 2 9 0 3 Rear wheel axle bolt n...

Page 40: ...2 10 47 4 8 Lower fork shear pin 2 8 32 3 3 Brake lever adjustment screw 1 6 2 9 0 3 Brake lever adjusting nut 1 6 5 9 0 6 Spoke 32 BC 2 9 2 9 0 3 Front wheel axle nut 1 15 59 6 0 Front brake lever screw 1 6 9 8 1 0 Fork bolt 2 10 23 2 3 Front fork top nut 2 20 23 2 3 Fork socket head screw 2 8 20 2 0 Steering column nut 1 22 74 7 5 Steering column upper thread 1 22 Throttle valve housing bolt 1 5...

Page 41: ...r throttle cable 2 Loosen the locknut B and turn adjuster C until the specified accelerator throttle cable free play is obtained 3 Tighten the locknut against the accelerator throttle cable adjuster securely 4 Slide the dust cover over the adjuster If you encounter a problem after adjusting the free play from the top 1 pull the rubber boot off the top of the carburetor and make the adjustment at t...

Page 42: ...t the idle speed to a slow 900 50 rpm by turning screw A out counter clockwise 4 Twist the throttle several times to ensure proper adjustment and that the idle speed remains constant 5 Then start the engine in neutral and turn the handlebar to the left and right to make sure the engine idling has not changed Changes imply a problem with the cable system Please contact your nearest authorized YCF d...

Page 43: ...wear Recommended engine oil API type SF SG SJ JASO MA 2 Viscosity weight SAE 10W 40 Recommended oil MOTUL 5100 or 7100 10W40 synthetic oil Advices regarding engine oil Change engine oil every three hours of use Only use YCF recommended oils Do not use the following types of oil non detergent plant based castor oil is a plant based oil Do not use oil additives Warning The safe operation of your min...

Page 44: ...screw and remove the cap dipstick then thoroughly wipe the dipstick clean with a cloth 5 Lift the mini motorcycle upright 6 Re insert the dipstick 7 Then remove the dipstick and take note of where the oil level is in relation to the indicator marks If the oil level is getting near or has reached the maximum level mark B there is no need to add oil However if the oil level is closer to below the mi...

Page 45: ...re complete draining 6 Once the oil is drained replace and torque the drain plug B to the specified torque 2 4 Nm 2 4 kgf m 18 lb ft 7 Pour in new MOTUL oil type 10W 40 in the required amount see table below 8 Tighten the oil drain plug bolt assembly and replace the cap 9 Run the motorcycle at idle for 5 minutes then turn off the engine and wait again 3 minutes for the oil to settle 10 Re check yo...

Page 46: ...ntity YCF 50A FACTORY SP3 BIGY 190MX BIGY 190ZE LITE F88S LITE F125 START F88SE START F125 START F125SE PILOT F125 SM F125S FACTORY SP2 BIGY 125MX BIGY F150MX PILOT F150 SM F150 BIGY 150MX 700mL 23 7oz 800mL 27 1oz 600mL 20 3oz ...

Page 47: ...nk capacity reserve included YCF50A 2 litres 67 6oz All START PILOT LITE SM SP 3 8 litres 128 5 All BIGY 5 8 litres 196 1oz Fuel reserve All YCF motorcycles 1 litre 33 8oz A Fuel cap B Breather cap 1 Rotate the fuel cap A counter clockwise to open 2 Make sure the breather cap B is removed 3 Add fuel up to the top of the fuel tank never over the base of the fuel cap Be careful not to overfill the t...

Page 48: ...ll in one A External bolts B Internal bolts C Rear bolts D Modular system Removing the saddle 1 Remove both external bolts A 2 Remove both internal bolts B 3 Remove both rear bolts underneath the saddle C 4 Pull the modular seat system D off the seat post Putting the saddle back on 1 Slide in the new saddle D back towards the fuel tank 2 Clip the new seat to the frame 3 Put back the six bolts A B ...

Page 49: ...48 English Warning Upon installing your new saddle tighten all screws and bolts Failure to install the seating arrangement properly can lead to accidents with subsequent serious injury or even death ...

Page 50: ...r abnormal wear or corrosion proceed to immediate replacement of the spark plug 7 Check the spark plug gap C and find the correct slot using a spark plug gapping tool The correct spark plug gap should read 0 60 0 80mm 0 023 0 031 in 8 Thread the spark plug into the hole in the cylinder and tighten to specifications 9 Put the spark plug cap back on the wire Warning Do not attempt to handle or touch...

Page 51: ...des of the filter Rinse thoroughly and allow to air dry for 24 hours 4 Inspect the air filter and look for signs of dirt or build up If damaged replace it with a new one 5 Once dry apply a thin layer of fresh oil special for air filter MOTUL AIR FILTER OIL SPRAY and rub the areas gently to help remove any excess of oil do not over oil as it will cause poor air intake 6 Put the new air filter back ...

Page 52: ...l know you need to adjust the clutch when you feel it slipping A Clutch lever B Locknut C Adjuster Clutch adjustment 1 Check free play at the clutch lever If it goes beyond 5mm 0 20 inch then adjustment is necessary 2 Loosen the locknut B 3 Turn the adjuster C at the lever until the free play is within the specified limits 4 Tighten the locknut B B C A ...

Page 53: ... sure that the engine is switched off and wait until the exhaust pipe has thoroughly cooled in order to avoid the risk of serious burns Engine and exhaust pipe become hot very quickly during riding Always wear protective clothing such as long pants and boots before proceeding Do not under any circumstances start the engine without the sparks arrestor properly installed on your mini motorcycle whic...

Page 54: ...wards on the handlebar and let it go upwards The whole set of movements should be very smooth and show a swift rebound 3 Make a visual check of all bolts and screws If any bolt or nut is rusted or damaged contact your nearest YCF dealer to check your mini motorcycle for replacement parts For FACTORY SP3 and BIGY 190 MX motorcycles equipped with ENGI fork there are two possible regulations at the t...

Page 55: ...y 3 Adjust the rear shock absorber bounce a To harden the rear suspension turn the adjustment screw A clockwise b To soften the rear suspension turn the adjustment screw counter clockwise When visual inspection indicates that the rear suspension may be damaged or leak contact your nearest YCF dealer to check your mini motorcycle for replacement parts if necessary Warning The rear shock absorber co...

Page 56: ... tables of preventive maintenance and checks of this Owner s manual Brake system bleeding front and rear Only an authorized YCF dealer car perform this maintenance task A Brake caliper bleed screw B Brake fluid reservoir C Brake fluid hose Warning Proper brake adjustment and operation is critical to the safe operation of your mini motorcycle Lack of maintenance of the braking system can increase t...

Page 57: ...bly 3 Pull the brake pads C out of the caliper 4 Insert a set of new brake pads into the caliper s mouth 5 Screw the caliper assembly into place Tighten the caliper s bolts and test the brake lever repeatedly Warning Proper brake adjustment and operation is critical to the safe operation of your mini motorcycle Lack of maintenance of the braking system can increase the risk of accidents with subse...

Page 58: ...ave different sizes 6 Insert a new brake pad on the inner side of the caliper assembly the big one if they have different sizes 7 Screw the caliper assembly into place Tighten the caliper s bolts 8 Replace the caliper dust seals and test the brake lever repeatedly Warning Proper brake adjustment and operation is critical to the safe operation of your mini motorcycle Lack of maintenance of the brak...

Page 59: ...ows 1 Look for crevices and fissures protruding nails and glass splinters as well as rocks or other embedded foreign bodies Remove these particles before riding 2 Check the depth of the tire tread Have the tire replaced when the tread depth at the center is less than 5 mm 0 2 inches or when you notice reduced tire traction 3 Check the valve stem Any tilt in the valve stem tells that the tube is no...

Page 60: ...er to perform both tire and inner tube replacement Warning For safety reasons selecting the right tires for your mini motorcycle is imperative Using tires of a different brand or type can adversely affect the handling and stability of your mini motorcycle increasing the risk of accidents with subsequent serious injury or even death Use only the type specified in this Owner s Manual Tire size front...

Page 61: ...kes Uneven or loose spokes are likely to cause a warp in the rim and lead to a failure of the spoke nipple Ultimately the wheel spokes will break or wiggle and the wheel will become unstable which can lead to subsequent accident Rims and spokes A Rim B Spoke C Spoke nipple Wheel balancing 1 Tighten any loose spoke place your YCF spoke wrench on the spoke nipple C and turn it clockwise 2 Lift the w...

Page 62: ...he instructions below to remove the wheels FRONT WHEEL A Front axle nut B Front wheel axle C Pinch bolts Front wheel removal 1 Place the motorcycle on a centre stand for stability 2 Unscrew the front axle nut A remove the front wheel axle B 3 Loosen the pinch bolts or nuts C 4 Pull the front wheel out Front wheel installation 1 Follow the same procedure as above in reverse order 2 Torque the axle ...

Page 63: ...el axle A 3 Slide wheel forward and disengage the chain 4 Pull the rear wheel Rear wheel installation 1 Follow the same procedure as above in reverse order 2 Spin the rear wheel to ensure proper installation 3 Press down the rear brake smoothly to ensure proper adjustment Adjust as needed 4 Ensure proper drive chain adjustment Adjust as needed while backing off the lock nut C and tightening the ax...

Page 64: ...afety reasons A Side stand spring B Side stand 1 Check that the side stand spring A has good tension or is not under any twisting position 2 Check that the side stand B is functioning properly NB If you intend to ride on a muddy or dry and sandy terrain it is recommended to lubricate the pivot area with clean grease and the side stand pivot bolt using fresh engine oil A B ...

Page 65: ...ls taut at the tightest part of the crank s rotation Then measure the chain slack by pulling the chain up half way between the front and rear sprockets 3 Slack is determined by the vertical movement on the bottom part of the chain Proper slack distance must be 3 8 cm 1 5 inches with the slack measured out of the bottom run of the chain to the top of the swing arm with no tension on the wheel Measu...

Page 66: ... on both sides of the swing arm with a wrench 3 Turn the chain adjuster bolts C on both sides of the swing arm clockwise an equal number of turns to increase tension or counter clockwise to decrease it 4 Tighten the chain adjuster lock nuts on both sides of the swing arm 5 Re measure the chain slack Warning Never ride your mini motorcycle when the drive chain is worn out or improperly adjusted Fai...

Page 67: ...he first pin to pin center of the 21st pin If your measurement exceeds the service limit indicated in the table below then it is time to replace the chain Control of parts associated with the chain 1 Examine the front and rear sprockets spacing as well If the chain is worn out then replace the sprockets as well 2 Rotate the rear wheel to also inspect the drive chain for damaged rollers for wear If...

Page 68: ...hly dissolve the accumulated dirt using heavy oil such as kerosene Then let it dry completely 3 Visually inspect the drive chain for any damages If you notice damage have it replaced 4 Lubricate the drive chain including the rollers the bushings and the rings 5 Thread the chain over the swing arm and around the new sprockets Then connect the open ends of the chain with the master link To ease the ...

Page 69: ...t the air filter from water 3 Give your mini motorcycle a hose down with cold water 4 Wash your mini motorcycle using a dish soap or other mild detergents and scrub it down with a sponge 5 Clean out scrape off any mud dirt and grease using a mild degreasing cleaner 6 Rinse thoroughly 7 Use a chamois or soft clean cloth to dry off your mini motorcycle 8 Lubricate the drive chain well 9 In a ventila...

Page 70: ... on how to fix some urgent malfunction Engine is difficult to start This is one of the most common causes of engine failure There are many reasons including the following Fuel tank empty Fuel tap lever to the OFF position Spark plug loose or damaged threads Engine flooded Poor braking The most noticeable signs of unsatisfactory braking among other problems may be caused by Improper adjustment Brak...

Page 71: ... the environment as well as the whole planet by strictly adhering to the following guidelines Use special and certified tracks only drive your mini motorcycle in areas designed for off road use Do not drive on the public highway or inside protected areas For your safety and the preservation of the environment please only use authorized in bike trails and dirt roads Use appropriate cleaning agents ...

Page 72: ...n to the combustion chamber via the carburetor where they dilute the air fuel mixture TAMPERING WITH THE EMISSION CONTROL SYSTEM IS PROHIBITED In other word it is strictly forbidden for everyone to remove or make ineffective any element of the motorcycle designed to control gas emission except during maintenance repair or replacement prior or after its sale or delivery to the ultimate purchaser or...

Page 73: ... of the mini motorcycle after such device or element of design has been removed or made inefficient by any person AMONG THOSE ACTS PRESUMED TO CONSTITUTE TAMPERING ARE THE ACTS LISTED BELOW The removal of the muffler the baffles or any other internal or external component of the exhaust system The modification of the muffler the baffles or any other internal or external component of exhaust system...

Page 74: ...re is described the location of the two main motorcycle identifications numbers 1 The frame number on the front of the frame 2 The engine serial number on the right side of the engine below the flywheel cover 1 Engine serial number 2 Frame number ...

Page 75: ... requests large or small If for some reason your YCF mini motorcycle dealer cannot assist you in a satisfactory manner we encourage you to contact YCF directly in writing and thoroughly document your question issue Our customer service team will review all queries and respond accordingly When writing to YCF regarding an issue with your Mini motorcycle please include the following information Local...

Page 76: ...75 English MAINTENANCE LOG BOOK OWNER NAME PHONE NUMBER MAIL ADDRESS YCF MINI MOTORCYCLE TYPE PURCHASE DATE FRAME NUMBER ENGINE NUMBER DEALER NAME PHONE NUMBER MAIL ADDRESS ...

Page 77: ...76 English Date Rides duration hours Maintenance performed Dealer s stamp ...

Page 78: ... j IRON E YCF MOTORCYCLE COMPANY FRANCE YCF ...

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