Yamaha YFM225S 1985 Owner'S Manual Download

Page: 98 / 108

Summary of Contents for YFM225S 1985

Page 2: ...stamped on your key as shown in the j llowin g illustration Record this number in the sp e provided for reference if you need a new key Record your vel licle and engine numbers in the spaces provided to assist you in ordering spare parts from your Yamaha dealer or for refer ence in case your vehicle is stolen See page 4i ...

Page 3: ...maha Motor Corporation U S A 1st J tion January 1985 All rights r served Any reprinting or unauthorized use without the written pern iission of Yamaha Motor Corporation U S is expressly prohibited Printed in Japan _ P N_LIT 1162 04 83 ...

Page 4: ...MACHINE This manual will provide you with a good basic understanding ofthe features operation and basic maintenance and inspection items of this machine A section is provided which will describe the special techniques and skills necessary to ride your machine If you have any questions regarding the operation or maintenance of your machine P ease consult a Yamaha dealer NOTE Some date in this manua...

Page 5: ...ial procedures that must be followed to avoid injury to a machine operator or person in specting or repairing the machine IMPORTANT NOTICE This machine is designed and manufactured for OFF road use only It is il legal fo operate this machine n any public street road or highway Such use is prohibited by law This machine complies with all applicable OFF highway noise level and spark arrester laws an...

Page 6: ......

Page 7: ...FETY INFORMATION 5 LOADING PRECAUTIONS 1Q SAFETY WARNINGS 12 CONTROL FUNCTIONS 13 PRE OPERATION CHECKS 26 OPERATION 31 RIDING YOUR MOT0 4 40 PERIODIC MAINTENANCE AND ADJUSTMENT 56 CLEANING AND STORAGE 89 SPECIFICATIONS 92 WARRANTY INFORMATION 97 NOISE REGULATION 98 MAINTENANCE RECORD 99 WIRING DIAGRAM 100 ...

Page 8: ...ION AUXILIARY D C T ERMINAL MAXIMUM OUT PUT 12V 10A Reid Owner s Manuel carefully before connecting en accftsory ATTENTION PRISE AUX ILI A IRE DE c c PUISSANCE MAXIMALE 12V 10A Avent de connecter un appareil lire le Manuel du proprietaire attentlvement 1 ...

Page 9: ...POSITION ON ENGINE STARTED AT 1 I 2 3 WARM ENGINE START POSITION NOTE see OWNER S MANUAL ATIENTION BOITE DE RANGEMENT CHARGE MAXIMUM KG lbs Pour Cvitcr dcndommager la boitc de rangemcnt nc pas placer des objects mCtalligucs commc des outils ou des objects avant des aritcs vivcs directcment dans ccttc boite Prendre soin de bien cs emballcr au prCa lablc USE HYPOID GEAR OIL SAE so MFD BY YAMAHA MOTO...

Page 10: ... 2 Seat 11 Change pedal 3 Main switch 12 Rear brake lever 4 Auxiliary DC terminal 13 Parking brake button 5 Front carrier 14 Speedometer 6 Brake pedal 15 Starter lever CHOKE 7 Headlight 16 Front brake lever 8 Front wheel 17 Throttle lever 9 Fuel cock 18 Handlebar switch 3 ...

Page 11: ...ed to identify your machine 4 Engine serial number The engine serial number is stamped into the elevated part of the right rear section of the engine 1 Eng ine serial number NOTE The first three digits of these numbers are for model identification the remaining digits are the unit production number Keep a record of these numbers for reference when ordering parts from a Yamaha dealer ...

Page 12: ... with care and good judgement 1 Riding your machine requires skills ac quired through practice over a period of time Take the time to learn the basic techniques well before attempting more difficult maneuvers 5 2 This machine is designed to carry one person only Do not carry a passenger ONE PERSON ONLY ...

Page 13: ...e riding for safety and proper care of the mcahine 6 4 The exhaust system on the machine is very hot during and following operation To prevent burns avoid touching the ex haust system Park the machine in aplace where pedestrians or children are not likely to touch it ...

Page 14: ...on when riding the machine with additional loads such as accessories cargo or a trailer The machine s handling may be adversaly af fected Reduce your speed when adding additional loads 7 8 When transporting the machine in another vehicle be sure it is kept upright and that the fuel cock is turned to the OFF position If the machine should lean over gasoline may leak out of the carburetor or fuel ta...

Page 15: ... Be careful where you ride 1 This machine is designed for off road use only Riding on pavement is not recom mended since handling can be seriously affected If you must ride on paved sur faces go slowly and do not make sudden turns or stops Riding on pavement will also shorten tire life 2 Ride cautiously in unfamiliar areas You may encounter hidden obstacles which could cause an accident ...

Page 16: ...h as desert terrain mount a caution flag on the machine DO NOT use the flag pole bracket as a trailer hitch 9 Modifications 1 This machine is designed to conform with laws and regulations rega rding sprk ar resters and noise level Do not modify the exhaust system 2 Modifications to this machine may reduce safety and reliability and may make the machine illegal for use ...

Page 17: ...e and safe operating speed will be reduceq Accordingly the machine must be used on level and flat terrain only and must nRt exce 16 km h 10 mi h Do not carry sue a big cargo on the front carrier as to obstruct the view ahead Make sure that the cargos are securely at tached to each carrier Make sure that the cargo on the rear car rier is placed as far forward as possible 10 The cargos on the carrie...

Page 18: ...km h 10 mi h this load limit can be in creased to 150 kg 330 Ib Front carrier 15 kg 33 lb Rear carrier 45 kg 100 lb Storage box 2 kg 4 4 lb Trailer hitch Horizontal load 300 kg 660 lb Total weight of trailer and cargo Vertical load 15 kg 33 lb Vertical weight on trailer hitch joint Be extra careful of the machine balance and stability when towing a trailer J 11 ...

Page 19: ...soline or nhale a lot of gasoline vapor or allow some gasoline to get into your eye s see your doctor immediately If any gasoline spills on your skin or clothing immediately wash it with soap and water and chaflge your clothes 12 3 Never start the engine or let it run for any length of time in a closed area The ex haust fumes are poisonous and may cause loss of consciousness and death within a sho...

Page 20: ...uits are switched off The key can be removed in this position Indicator lights NEUTRAL indicator light Green This indicator lights when the transmission is in neutral REVERSE indicator light Red This indicator lights when the transmission is in reverse 1 NEUTRAL indicator light 2 REV ERSE indicator light Speedometer The trip odometer is built into the speedo meter The trip odometer can be reset to...

Page 21: ...et or trouble takes place in the throttle system The engine will not start or run when the engine stop switch is turned to OFF LIGHTS Dimmer switch Turn the light switch to LO to turn on the headlight low beam and taillight Turn the light switch to HI to turn on the headlight high beam and taillight Do not use headlight with engine off for more than half an hour Battery may discharge to point that...

Page 22: ...osition the engine stop switch at the RUN Throttle lever Once the engine is running cleanly movement of the throttle lever will increase the engine speed and cause engagement of the drive system 15 Regulate the speed of the machine by varying the throttle position Because the throttle is spring loaded the machine will decelerate and the engine will return to an idle any time the hand is removE d f...

Page 23: ... Rear brake lever The rear brake lever is located on the left handlebar Squeeze it toward the hand lebar to activate the rear brake 16 Parking brake button When you have to start the engine or park the machine on a slope squeeze the rear brake lever with and push in the parking brake button To release the parking brake just squeeze the rear brake lever ...

Page 24: ...ng brake button WARNING 1 Always set parking brake before at tempting to start the engine 2 Never run the machine with the parking brake applied This may overheat the brake disc Rear brake pedal The rear brake pedal is on the right side of the machine Press down on the brake pedal to activate the rear brcrke r Rear brake pedal 17 ...

Page 25: ...hould be used to shift your machine into high low or reverse Refer to page 34 for the dirve select lever operation 1 HIGH 2 LOW 3 REVERSE Decompression lever When this lever is used the exhaust valve is forced open so the compression pressure can be reduced This lever is used when starting the engine by the emergency rope The decompression lever returns to it s original position when the emergency...

Page 26: ...lockwise 1 Fuel tank cap Fuel cock The fuel cock supp lies fuel from the tank to the carburetor whi le filtering the fuel The fuel cock has three positions OFF With the lever in this position fuel will not flow Always return the lever to this position when the engine is not 19 running ...

Page 27: ...un out of fuel while riding move the lever to this position THEN FILL THE TANK AT THE FIRST OPPORTUNI TY After refuel ling the fuel cock lever should be at ON Starter lever CHOKE The starter lever is located beside the speedo meter NOTE Refer to Starting and warming up a cold engine for proper operation 20 1 Full open 3 Closed 2 Half open a Starter lever ...

Page 28: ...t at the rear To install the seat Insert the lobe on the seat front into the receptacle on the frame then push down the seat at the rear NOTE Make sure that the seat is securely fitted 1 Seat lock lever Rear fender removal 1 Remove the seat 2 Remove the bolts and screws I 21 ...

Page 29: ...re Storage box Maximum load limit 2 kg 4 4 lbs To protect storage box from damage do not put metal products e g tools or sharply edged products directly in the storage box If they must be stored wrap them in appropriate cushion material Auxiliary DC terminal The auxiliary DC terminal is located on the front bumper 22 ...

Page 30: ...If accessories are used in excess of the above capacity or if accessories are used with the engine not running the battery will lose its charge and engine starting may become dif ficult Do not use accessories requiring 12V 1OAH or more This would cause the circuit breaker to activate making it impossible to use the DC terminal Connecting accessory leads 1 Strip 5 mm 0 2 in off the insulation from ...

Page 31: ...ach lead Securely connect the leads and to the corresponding terminals iAoomo yol g VCover The voltage and ground marks em bossed on the accessory plug must be observed wh nnne t fl the terminals Make sure that neither terminal is shorted 24 3 Fit the protective cover into the plug body groove Cover ...

Page 32: ...tarted refer to page 31 2 Remove the dust cap from the receptacle 1 Dust cap 3 Insert the accessory plug into the recep tacle and secure it with the screw on cap 25 Accessory plug Receptacle 4 When the accessory plug is removed screw the dust cap onto the receptacle for protection ...

Page 33: ...k for leakage visually 28 64 65 Throttle Check for proper throttle cable operation 28 70 71 Wheels and tires Check tire pressure wear 29 30 80 81 Fittings fasteners Check all tighten as necessary 28 60 Lights Check for proper operation 29 86 87 Battery Check fluid level 29 81 84 top up with distilled water if necessary NOTE Pre operation checks should be made each time the machine is used Such an ...

Page 34: ...hecking the front brake shoes Refer to page 76 Fuel Make sure there is sufficient fuel in the tank Recommended fuel Regular gasoline Fuel tank capacity 12 L 2 6 Imp gal 3 2 US gal WARNING Do not overfill the fuel tank Avoid spilling fuel on the hot engine Do not fill the fuel tank all the way to the top or it may overflow when the fuel heats up later and expands After refueling make sure the tank ...

Page 35: ...at the specified level Add oil as necessary See page 64 Recommended oil SAE 80 API GL 4 Hypoid gear oil If desired an SAE 80W90 hypoid gear oil may be used for all conditions NOTE GL 4 is a quality and additive rating GL 5 or G L 6 rated hypoid gear oils may also be used Throttle lever Check to see that t he throttle lever operates correctly It must open smoothly and spring back to idle when relea...

Page 36: ... attention to the following points Recommended tire pressure 19 6 kPa 0 20 kg cm2 2 8 psi Vehicle load limit 110 kg 243 lb Tire size Front 22 x 8 10 Rear 25 x 13 9 1 Excessive tire pressure over 137 kPa 1 4 kg cm2 20 psi may cause tire to burst Inflate tires very slowly Fast inflation could cause tire to burst 2 Too low a pressure below 16 6 kPa 0 17 kg cm2 2 4 psi could cause the tire to dislodge...

Page 37: ...2 2 8 psi Min tire pressure 16 6 kPa 0 17 kg cm2 2 4 psi Never use a tire pressure below minimum specification The tire could separate from the wheel under severe operating conditions NOTE An optional low pressure tire gauge is available Please ask your nearby Yamaha dealer 30 Tire wear limit When the tire groove decreases to 3 mm 0 12 in due to wear replace the tire ...

Page 38: ...o ride this model on any public street or high ways 31 Starting a cold engine WARNING In cold districts control wires may freeze Make sure they move smoothly before start ing 1 Turn the ignition key to the ON and the engine stop switch to the RUN 2 Shift the transmission into the neutral position NOTE When the transm1ss1on is in neutral the neutral indicator light green should be on If the light d...

Page 39: ...e fails to start release the starter switch then push the starter switch again Pause a few seconds before the next attempt Each cranking shou Id be as short as possible to preserve battery energy Do not crank the engine more than 10 seconds on each attempt NOTE When the battery is discharged pull the decompression lever and give a healthy pull at the emergency rope to start the engine Refer to pag...

Page 40: ...ing material Because the engine is brand new you must not put an excessive load on it for the first several hours of running During the first 20 hours the various parts in the engine wear and polish themselves to the correct operating clearances During this period prolonged full throttle operation or any condition which might result in excessive heating of cylinder must be avoided However momentar...

Page 41: ...achine to rev freely through the gears but do not use full throttle at any time 3 After break in Avoid prolonged full throttle operation Vary speeds occasionally Drive select lever operation 1 Shifting HIGH LOW a Bring the machine to a complete stop and return the throttle lever to its closed position Before shifting you must stop the machine and return the throttle lever to its closed position Ot...

Page 42: ...Shifting into or from the REVERSE can only be done in first gear d While pulling the knob move the drive select lever either toward the LOW or REVERSE Check that the knob has 35 returned to its home position once the shift is complete 1 Knob When the machine is shifted into RE VERSE the indicator light red will come on e To begin operation in low release the parking brake and open the throttle lev...

Page 43: ...al to the end of its travel You will feel a stop when you are in Neutral gear 1 Change pedal N Neutral Do not coast for long periods with the engine off and do not tow the machine a long distance Even with gears in neutral the transmission is only properly lubricated when the engine is running Inadequate lubrication may damage the transmission Gear shifting 1 Return the throttle lever quickly Alwa...

Page 44: ... brake button and lock it by setting the lock WARNING Avoid parking on an incline If you must park on a hill place the machine transversely across the incline Put the machine in low gear set the parking brake button and block the front and rear wheels WARNING When starting the engine always put the machine into neutral gear and set the parking brake button 37 ...

Page 45: ... transmission into neutral 2 Remove the change pedal and open the left hand crankcase cover 3 Turn ignition key to ON 4 Insert the knotted end of the rope into the pulley notch and wind the rope three or four turns counterclockwise 38 Pull up the decompression lever Then give the rope a healthy pull for starting the engine Repeat it as required ...

Page 46: ...r IG Because the left crankcase cover must be opened for this procedure be careful to avoid contact with the rotating pulley as you could be injured After the engine starts reinstall the crankcase cover securely NOTE Fit the change pedal to the same height of the footrest See the photo 39 1 Change pedal 2 Footrest ...

Page 47: ......

Page 48: ... 5 9 Please also read all caution and warning labels on your MOT0 4 Remember your MOT0 4 is designed for one person operation only Do not carry pas sengers LEARNING TO RIDE YOUR MOT0 4 Before you ride a ways perform the Pre operation Checks listed on page 26 The short time spent checking the condition of the machine will be rewarded with add ed safety and a more reliable MOT0 4 Always wear a helme...

Page 49: ...ds do not allow skin or clothing to come in contact with these components With the engine idling lift the change pedal to the 1st gear position and then release the parking brake Apply the throttle slowly and smoothly The centrifical clutch will engage and you will start to accelerate Once the MOT0 4 has attained adequate speed release the throttle and lift the change pedal to the 2nd gear positio...

Page 50: ...al control overturning or an accident may occur When slowing down or stopping release the throttle and apply the brakes smoothly and evenly As you slow down shift to a lower gear Be sure that the engine has sufficiently slowed before engaging a lower gear Improper use of the brakes or shifting can cause the tires to lose traction reducing control and increas ing the possibility of an accident 43 ...

Page 51: ...e traction the MOT0 4 will resist turning A special turning technique must be used to allow the MOT0 4 to make turns quickly and easily It is essential that this skill be learned first at low speed 44 As you approach a curve slow down and begin to turn the handlebars in the desired direction As you do so put your weight on the footrest to the outside of the turn opposite your desired direction and...

Page 52: ...e MOT0 4 begins to tip over to the outside while negotiating a turn lean more to the inside It may also be necessary to gradual ly let off on the throttle and steer to the out side of the turn to avoid tipping over Remember Avoid higher speeds until you are thoroughly familiar with the operation of your MOT0 4 CLIMBING UPHILL Be sure that you can maneuver your MOT0 4 well on flat ground before att...

Page 53: ...climb ing a hill The front wheel must be kept on the ground to avoid loss of directional control and to prevent the possibility of the MOT0 4 tipping over backwards If you are climbing a hill and you find that you have not properly judged your ability to make it to the top you should turn the MOT0 4 around while you still have forward motion provided you have the room to do so and go down the hill...

Page 54: ...OT use the rear brake to stop or try to put the MOT0 4 in gear The MOT0 4 could easily tip over backwards Instead dismount the MOT0 4 immediately on the uphill side 47 WARNING When dismounting your MOT0 4 on a slope always dismount and stay on the uphill side to avoid the possibility of the MOT0 4 rolling over on top of you Do not use the rear brake to try to stop the MOT0 4 if it is rolling backw...

Page 55: ... affected by these surfaces Improper braking may also cause a loss of traction Whenever possible ride your MOT0 4 straight downhill Avoid sharp angles which could allow the MOT0 4 to tip or rollover Carefully choose your path and ride no faster than you will be able to react to obstacles which may appear CROSSING A SLOPE Traversing a sloping surface on your MOT0 4 requires you to properly position...

Page 56: ...f your MOT0 4 does begin to tip over gradually steer in the downhill direction if there are no obstacles in your path As you regain proper balance gradually steer again in the direction you wish to travel WARNING There is greater danger of tipping when riding on sloping surfaces Tipping may cause loss of control If you are unable to maintain correct balance and you discover that the MOT0 4 is goin...

Page 57: ... MOT0 4 Drive slowly and carefully Remember that brakes which are wet may have reduced stopping ability Test your brakes after leaving the water and apply them several times if necessary to let the friction dry out the linings Do not continue to ride your MOT0 4 without verifying that you have regained proper braking ability 50 WARNING Do not ride the MOT0 4 into water deeper than 35 cm 14 inches ...

Page 58: ...ated in salt water or muddy conditions 1 Check hose RIDING OVER ROUGH TERRAIN Riding over rough terrain should be done with caution Look out for obstacles which could cause damage to the MOT0 4 or could lead to an upset or accident Be sure to keep your f et firmly mounted on the footrests at all times Avoid jumping the MOT0 4 as loss of control and damage to the MOT0 4 may result 51 ...

Page 59: ...ce the MOT0 4 may slide If unexpected and uncorrected sliding could lead to an accident To reduce the tendency forthefrontwheelsto slide in loose or slippery conditions position ing your weight over the front wheels will sometimes help If the rear wheels of your MOT0 4 start to slide sideways control can usually be regained if there is room to do so by steering in the direction of the slide Applyi...

Page 60: ...l control may be lost WARNING Sliding or skidding on pavement must be avoided at all times because traction may be regained without warning causing the MOT0 4 to turn over and result in an ac cident or injury Be careful when braking on loose or slip pery surfaces Improper use of the brakes can cause uncontrolled sliding reducing control and increasing the possibility of an accident WHAT TO DO IF T...

Page 61: ...adually let off on the throt tle and or steer to the outside of the turn see pages 44 and 45 54 Steer in the direction of the slide if you have the room Applying the brakes or accelerating is not recommended until you have corrected the slide see pages 52 and 53 If your MOT0 4 can t make it up a hill you are trying to climb Turn the MOT0 4 around if you still have forward speed If not stop dismoun...

Page 62: ...n balance If you discover that the MOT0 4 is going to tip over dismount on the uphill side see pages 48 and 49 If your MOT0 4 encounters shallow water Ride slowly and carefully through slow moving water watching for obstacles Be sure to let water drain from the MOT0 4 and CHECK YOUR BRAKES FOR PRO PER OPERATION when you come out of the water Do not continue to ride your MOT0 4 until you have rega ...

Page 63: ...he engtne when you perform maintenance unless otherwise spe cified If the owner is not familiar with machine service this work should be done by a Yamaha dealer or other qualified mechanic Tool kit The service information included in this manual is intended to provide you the owner with the necessary information for completing your own preventive maintenance and minor repairs The tools provided in...

Page 64: ...aha dealer or other qualified mechanic to check the torque settings and adjust them as necessary WARNING Modifications to this machine not approv ed by Yamaha may cause loss of perfor mance excessive noise or render it unsafe for use Consult a Yamaha dealer or other qualified mechanic before attempting any changes 57 ...

Page 65: ...Replace Warm engine before draining 0 0 0 0 Engine oil filter Clean 0 0 0 Engine oil strainer Clean 0 0 0 Final gear oil Check oil level o il leakage Replace every 12 months 0 0 Brake Check operation Adjust if necessary 0 0 0 0 0 Clutch Check operation Adjust if necessary 0 0 0 0 Decompression system Check operation Adjust if necessary 0 0 0 Wheels Check balance damage runout Repair if necessary 0...

Page 66: ...ect if necessary Check specific gravity Battery Check breather pipe for proper operation Correct if necessary It is recommended that these items be serviced by a Yamaha dealer lithium soap base grease 59 1 month 0 0 Initial Every 3 6 6 1 months months months year 0 0 0 0 0 0 0 0 ...

Page 67: ...que Item Nm m kg ft lb Spark plug 17 5 1 75 12 5 Engine drain plug 43 4 3 31 Oil filter Drain bolt 10 1 0 7 2 Filter cover bolt 10 1 0 7 2 Oil gallery bolt 7 0 7 5 1 Front wheel nut 28 2 8 20 Rear wheel nut 28 28 20 Final gear drain plug 23 2 3 17 60 A B Torque specificat ions Nut Bolt Nm m kg ft lb 10mm 6mm 6 0 6 4 3 12 mm 8mm 15 1 5 11 0 14 mm 10 mm 30 3 0 22 b 17 mm 12 mm 55 5 5 40 0 19 mm 14 m...

Page 68: ...hine is level b The dipstick has a minimum and a max imum mark and the oil level should be between the two If the level is lower then add sufficient oil to raise it to the proper level 2 Engine oil replacement a Start the engine After a few minutes of warm up stop the engine b Place a container uhder the engine c Remove the dipstick drain plug and drain bolt attached to the oi l filter cover 1 Dra...

Page 69: ...ded portion comes out completely When removing the drain plug the com pression spring oil strainer and 0 ring will fall off Take care not to lose these parts 62 3 Oil filter removal a Remove the oil filter cover and clean the filter element b Check 0 ring If damaged relace c Install the drain plug oil f ilter and oil filter cover 1 Oil filter 2 0 ring ...

Page 70: ... Oil capacity Total amount 2 4 L 2 1 Imp qt 2 5 US qt Periodic oil change 1 5 L 1 3 Imp qt 1 6 US qt Recommended oil See pages 27 and 28 e Start the engine and allow a few minutes of warm up While warming up check for oil leakage If oil leaks stop the engine immediately and check for the cause f Stop the engine and check the oil level After replacing the engine oil be sure to check the oil flow in...

Page 71: ...hecking tighten the oil gallery bolt to specification 1 Oil gallery bolt Tightening torque Oil gallery bolt 7 Nm 0 7 m kg 5 1 ft lb Final gear oil 1 Oil level measurement a Place the machine on a level place The engine should be cool at atmos pheric temperature b Remove the oil filler cap and check the oil level whether it is to the hole brim If it is not up to this level replenish oil Take care n...

Page 72: ...lug and drain the oil WARNING When draining or filling take care not to allow foreign material to enter the final gear case 65 c Reinstall and tighten the final gear case drain plug See page 60 for torque specifications d Fill the gear case to the specified level Oil capacity Final gear case 0 23 L 0 20 Imp qt 0 24 US qt Recommended oil See page 28 e Reinstall the filler cap securely ...

Page 73: ...spect the spark plug because heat and deposits will cause any spark plug to slowly break down and erode If electrode erosion becomes ex cessive or if carbon and other deposits are excessive you should replace the spark plug with one of the proper type Standard spark plug D7EA NGK or X22ES U N IPPONDENSO Before installing any spark plug measure the electrode gap with a wire thickness gauge and adju...

Page 74: ...y in the ignition system is found refer to the Troubleshooting or consult a Yamaha dealer or other qualified mechanic Air filter cleaning NOTE There is a check hose at the bottom of the air filter case If dust and or water collects in this hose clean the air filter element and air filter case 1 Check hose 1 Remove the seat 2 Remove the pan head screws from the filter case ...

Page 75: ...ement Such solvent may lead to a fire or explosion 6 Squeeze the excess solvent out of the filter and let dry Do not twist the filter element when squeezing the filter element 68 7 Pour a small quantity of foam air filter oil or SAE 10W30 type SE motor oil onto the filter element and work thorou ghly into the porous foam material NOTE In order to function properly the element must be damp with oil...

Page 76: ...he air filter element removed This will allow unfiltered air to enter causing rapid wear and possible engine damage Additionally operation without the filter element will affect carburetor jetting with subsequent poor performance and possible engine overheating Carburetor adjustment The carburetor is a vital part of t he engine and requires very sophisticated adjustment Most adjusting should be le...

Page 77: ...ith use resulting in improper fuel air supply and engine noise To prevent this the valve clearance must be adjusted regularly This adjustment however should be left to a Yamaha dealer or other qualified mechanic Throttle lever adjustment Loosen the lock nut and turn the adjuster un til there is the specified freeplay at throttle lever Throttle lever play 3 5 mm 0 12 0 20 in 2 Set the idle to the s...

Page 78: ...r lock nut for pedal height b By turning the adjuster bolt clockwise or counterclockwise adjust the brake pedal position so that its top end is approx 5 mm 0 2 in below the footrest top end c Secure the adjuster lock nut 2 Pump the brake pedal 2 to 3 times before adjustment 3 Fully loosen the rear brake lever cable adjuster at the brake lever ...

Page 79: ...liper then loosen the lock nut and adjusting bolt 1 Adjuster 2 Lock nut 3 Adjusting bolt 4 Brake pedal cable 5 Rear brake lever cable 5 Screw in the rear brake lever cable ad juster so that the brake caliper lever can be set at the position as shown i 1 Adjuster 1 Set position 2 Brake caliper lever 72 ...

Page 80: ...ng bolt Tightening torque 16 Nm 1 6 m kg 11 ft lb When tightening the lock nut hold the ad justing bolt with a spanner so that the ad justing bolt is not turned together with the lock nut 73 7 Screw in the brake pedal cable adjuster to provide a gap of 0 1 mm 0 0 04 in between the brake caliper lever and the 1 Brake pedal cable 2 Adjuster ...

Page 81: ... 8 Adjust the brake when the brake pedal play is over 50 mm 2 0 in and or wh n the rear brake lever play is over rn mm 0 4 in r1 a 50 mm 2 0 inJ or more WARNlr IG Always adjust both the brake pedal and the brake lever whenever adju sting the rear brake Front brake lever Front brake cable free play can be adjusted to suit rider preference but a minimum free play of 5 8 mm 0 2 0 3 in should be maint...

Page 82: ... the lock nut and screw in the adjuster on the brake lever side so as to bring the largest play to the brake lever 2 Make adjustment by means of the adjuster on the brake hub so the cable joint becomes horizontal as shwon 1 Adjuster 1 Cable joint 75 ...

Page 83: ...ine ask a Yamaha dealer or other qualified mechanic to replace the shoes 1 Wear limit 2 Wear indicator Rear brake pads inspection If the adjusting bolt has come so clos e to touch the lock nut with use ask a Yamaha dealer or other qualified mechanic for pad replacement 1 Lock nut 2 Adjusting bolt Clutch adjustment 76 1 Slowly turn the adjuster counterclock wise until resistance is felt This means ...

Page 84: ...housing of the various cables may cause corrosion and interfere with the movement of the cable An unsafe condition may result so replace such cables as soon as possible Lubricate the inner cable and the cable end If they do not operate smoothly ask a Yamaha dealer or other qualified mechanic to replace them Recommended lubricant Yamaha chain and cable lube or SAE 1OW30 motor oil Lubrication of lev...

Page 85: ...AE 10W30 motor oil Knuckle shaft Lubricate the knuckle shafts Recommended lubricant Lithium soap base grease Front and rear shock absorber adjustment Spring preload If the spring seat is raised the spring becomes stiffer and if lowered it becomes softer 78 ...

Page 86: ...1 Special wrench 2 Softest 3 Stiffest NOTE When adjusting use the special wrench which is included in the owner s tool kit 79 Standard position B A Softest E Stiffest l ...

Page 87: ...damage or personal injury that may result for improper handling 1 Do not tamper with or attempt to open the cylinder assembly 2 Do not subject shock absorber to an open flame or other high heat source This may cause the unit to explode due to excessive gas pressure 3 Do not deform or damage the cylinder in any way Cylinder damage will result in poor damping performance 4 Bring your shock absorber ...

Page 88: ... the level of the battery fluid and see if the terminals are tight Add distilled water if the fluid level is low Do not leave or store the battery on its side When inspecting the battery be sure the breather pipe is routed correctly If the vent tube touches the frame or exits in such a way as to cause battery electrolyte or gas to exit onto the frame structural and cosmetic damage to the machine c...

Page 89: ...tteries produce explosive gases Keep sparks flame cigarettes etc away Ventilate when charging or using in enclosed space Always shield eyes when working near batteries KEEP OUT OF REACH OF CHILDREN 82 Replenishing the battery fluid A poorly maintained battery will deteriorate qu ickly The battery fluid should be checked at least once a month 1 The level should be between the upper and lower level ...

Page 90: ... which are harmful to a battery therefore refill only with distilled water 83 4 When the machine is not to be used for a month or longer remove the battery and store it in a cool dark place Completely recharge the battery before reusing ...

Page 91: ...nt 1 The fuse block is located under the rear fender 2 If any fuse is blown turn off the ignition switch and the switch in the circuit in question and install a new fuse of proper amperage Then turn on the switches if the fuse im mediately blows again consult a Yamaha dealer or other qualified mechanic 1 Main fuse 2 Spare fu se WARNING Never use a fuse with a rating other then specified or other m...

Page 92: ...xiliary DC terminal or when the circuit is shorted Is the current is thus shut off by the breaker perform the following procedure 1 Circuit breaker 2 Breaker knob 3 Push 1 Turn off the igni t ion switch and the switch in the circuit in question 2 Push in the breaker knob Wait 30 seconds before resetting the circuit breaker 85 3 Turn on the switches and see if the elec trical device operates If the...

Page 93: ...e bulb holder counterclockwise and remove the defective bulb WARNING Keep flammable products or your hands away from the bulb while it is on it will be hot Do not touch the bulb until it cools down 86 3 Slip a new bulb into position and secure it in place with the bulb holder 4 Reinstall the headlight cover Adjust the headlight beam if necessary ...

Page 94: ... pens check the machine in accordance with the procedures given in the troubleshooting chart below If repair is necessary ask a Yamaha dealer The skilled techn icians at a Yamaha dealer provide excellent service For replacement parts use only genuine Yamaha parts Imita tion parts are similar in shape but often in ferior in quality of materials and workman ship consequently service life is shorter ...

Page 95: ...l 1 There is compression Compression normal Clean filter element and fuel tank No fuel Fuel cock clogged Clean fuel cock Use electric starter to see if there is compression 1 Ask Yamaha dealer to inspect 3 Ignition Remove plug and check electrode 4 Battery Use electric starter Wipe clean with dry cloth Attach plug cap and ground to chassis Battery good Use the el ec tric starter Check fluid rechar...

Page 96: ...reasy ap ply degreaser with a paint brush Do not apply degreaser to wheel axles 3 Rinse dirt and degreaser off w ith garden hose using only enough hose pressure to do the job Excessive water pressure such as coin operated car washers may cause water seepage and contamination of wheel bear ings front forks and brakes seals Many expensive repair bills have resulted from improper high pressure deterg...

Page 97: ...rm storage 60 days or more of your machine will require some preventive pro cedures to insure against deterioration After cleaning machine thoroughly prepare for storage as follows 1 Drain fuel tank fuel lines and car buretor float bowl s 2 Remove spark plug s pour about one tablespoon of SAE 1OW30 or 20W40 motor oil in spark plug hole s and reinstall spark plug Turn the engine over several times ...

Page 98: ...lm of oil Do not apply oil to rubber parts or seat cover 7 Remove battery and charge it Store in a dry place and re charge once a month Do not store battery in an excessively warm or cold place less than 0 C 30 F or more than 30 C 90 F NOTE Make any necessary repairs before storing the machine 91 ...

Page 99: ... 46 6 in Minimum ground clearance 135 mm 5 3 in Basic weight With oil and full fuel tank 216 kg 476 lb Minimum turning radius 2 600 mm 102 4 in Front wheel alignment Toe in 0 10 mm 0 0 4 in Engine Type Air cooled 4 stroke SOHC Model 59V Cylinder arrangement Single cylinder Forward inclined Displacement 223 2 cm 3 Bore x Stroke 70 x 58 mm 2 76 x 2 28 in Compression ration 8 8 1 92 ...

Page 100: ...ge 1 5 L 1 3 Imp qt 1 6 US qt Total amount 2 4 L 2 1 Imp qt 2 5 US qt Final gear case oil amount 0 23 L 0 20 Imp qt 0 24 US qt Air filter Wet type element Fuel Type Regu lar gasoline Tank capacity 12 L 2 6 Imp gal 3 2 US gal Reserve amount 2 0 L 0 4 Imp gal 0 5 US gal Carburetor Type manufacturer VM24SH M IKUN I Spark plug Type manufacturer D7EA NGK or X22ES U NIPPONDENSO Gap 0 6 0 7 mm 0 024 0 02...

Page 101: ...range 5 speed forward 1 speed reverse Operation Left foot operation Left hand operat ion Gear ratio High range Low range 1st 34 12 x 26 29 x 29 26 2 833 34 12 x 32 23 x 29 26 4 396 2nd 34 19 x 26 29 x 29 26 1 789 34 19 x 32 23 x 29 26 2 776 3rd 29 22 x 26 29 x 29 26 1 318 29 22 x 32 23 x 29 26 2 045 4th 26 25 x 26 29 x 29 26 1 040 26 25 x 32 23 x 29 26 1 613 5th 23 28 x 26 29 x 29 26 0 821 23 28 x...

Page 102: ...e Gperation Suspension Front Rear Shock absorber Front Rear MODEL Steel tube 20 8 8 mm 0 35 in Tubeless 22 x 8 1 0 x 2 pcs 25 x 13 9 x 2 pcs Drum brake YFM225S Right hand operation Single disc brake Left hand operation and Right foot operation Swing axle Swing arm Coil spring Oil damper Gas Coil spring Oil damper 95 ...

Page 103: ...ystem C D I magneto Generator system Flywheel magneto Battery type capacity GM14AZ 4A 12A 14AH Headlight type Bulb Bulb wattage quantity Headlgith 25W 25W x 2 Taillight 7 5W Indicator light wattage quantity NEUTRAL 3 4W REVERSE 3 4W J 96 ...

Page 104: ...ABUSE AND NEGLECTED MAINTENANCE MAY LEAD TO MECHANICAL FAILURES WHICH CANNOT BE COVERED UNDER WARRANTY SECOND IF ANY PROBLEMS OCCUR WHICH YOU FEEL SHOULD BE COVERED UNDER WARRANTY NOTIFY YOUR DEALER IMMEDIATELY Don t delay as small problems left unrepaired can become large problems which may not be covered under warranty We recommend that the YAMAHA LIMITED WARRANTY be used as a folder in which yo...

Page 105: ...icle for the purpose of noise control prior to its sale or delivery to the ultimate purchaser or while it is in use or 2 the use of the vehicle after such device or element of design has been removed or rendered inoperative by any person AMONG THOSE ACTS PRESUMED TO CONSTITUTE TAMPERING ARE THE ACTS LIST ED BELOW These acts include tampering with the following systems i e modification removal etc ...

Page 106: ...ssion warranty The chart below is printed only as a reminder to you that the ma intenance work is requ ired It is not acceptable proof of maintenance work MA INTENANCE DATE SERVICING DEALER INTERVAL OF MILEAGE NAME AND ADDRESS REMARKS SERVICE 1 Month 4 Months 7 Months 13 Months 19 Months 25 Months 31 Months l 37 Months t 43 Months 49 Months 55 Months 1 61 Months _ J ...

Page 107: ...p rr v P Il CJJ P l__j _B t B tt 0 D C 1 Ignition coil 0 VFM225S WIRING DIAGRAM Starting circuit cut off relay RW B W B COi Unit 0 Rectifier regurator Starter relay w w w Circuit braker 10A s GI Sb w w p P 12V14A Earth Battery COLOR CODE B Black R Red L Blue Y Yellow G Green 0 Orange W White P Pink Br Brown Sb Sky blue B W Black White R W Red White W G White Green W R White Red G L Green Blue ...

Page 108: ... AMA J I A OT IWATA JAPAN O D f l INTED IN JAPAN f 5 1 5 7 x 1 CR l ...

Search results

Summary of Contents for YFM225S 1985

Reviews:

Related manuals for YFM225S 1985

Brands by name

Popular brands

Yamaha YFM225S 1985, Owner'S Manual

Search results

Summary of Contents for YFM225S 1985

Reviews:

Related manuals for YFM225S 1985

Brands by name

Popular brands