Yamaha YFM35XY Owner's Manual

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[Page 1] Yamaha YFM35XY

3D5-F8199-13LIT-11626-22-44 This ATV should not be ridden by anyone under 16 years of age. WARNING YFM35XY OWNER’S MANUAL READ THIS MANUAL CAREFULLY! It contains important safety information. DIC183 ...

[Page 2] Yamaha YFM35XY

EBU17092 Read this manual carefully before operating this vehicle. This manual should stay with this ve- hicle if it is sold. U3D513E0.book Page 1 Monday, May 19, 2008 3:19 PM ...

[Page 3] Yamaha YFM35XY

EBU17170 INTRODUCTION EBU17301 Congratulations on your purchase of the Yamaha YFM35XY. This ATV represents the result of many years of Yamaha experience in the production of fine sporting, touring, and pacesetting racing machines. With the purchase o...

[Page 4] Yamaha YFM35XY

EBU17330 IMPORTANT MANUAL INFORMATION EBU17342 FAILURE TO FOLLOW THE WARNINGS CONTAINED IN THIS MANUAL CAN RESULT IN SERIOUS IN- JURY OR DEATH. Particularly important information is distinguished in this manual by the following notations: * Product a...

[Page 5] Yamaha YFM35XY

EBU17350 IMPORTANT NOTICE EBU17360 Welcome to the Yamaha world of motor sports! This ATV is designed and manufactured for OFF-ROAD use only. It is illegal and unsafe to operate this ATV on any public street, road or highway. This ATV complies with al...

[Page 6] Yamaha YFM35XY

WARNING EWB00010 Indicates a potential hazard that could result in serious injury or death. EBU17420 TABLE OF CONTENTS SAFETY INFORMATION .............................. 1-1 LOCATION OF THE WARNING AND SPECIFICATION LABELS ............................

[Page 7] Yamaha YFM35XY

OPERATION .................................................. 6-1 Starting a cold engine ................................ 6-1 Starting a warm engine .............................. 6-3 Operating the drive select lever and driving in reverse ...........

[Page 8] Yamaha YFM35XY

Adjusting the brake pedal and rear brake lever free play and checking the brake pedal position ......................................... 8-29 Axle boots ................................................ 8-33 Brake light switches ....................

[Page 9] Yamaha YFM35XY

1-1 1 EBU17430 SAFETY INFORMATION EBU17513 AN ATV IS NOT A TOY AND CAN BE HAZARD- OUS TO OPERATE. An ATV handles differently from other vehicles, in- cluding motorcycles and cars. A collision or roll- over can occur quickly, even during routine maneu...

[Page 10] Yamaha YFM35XY

1-2 1 ● Always inspect your ATV each time you use it to make sure it is in safe operating condition. Al- ways follow the inspection and maintenance procedures and schedules described in this manual. ● Always keep both hands on the handlebars and ...

[Page 11] Yamaha YFM35XY

1-3 1 hill. If you stall or roll backwards, follow the spe- cial procedure for braking described in this man- ual. Dismount on the uphill side or to a side if pointed straight uphill. Turn the ATV around and remount, following the procedure described...

[Page 12] Yamaha YFM35XY

1-4 1 WARNING EWB00021 WARNING EWB00030 POTENTIAL HAZARD Improper handling of gasoline. WHAT CAN HAPPEN Gasoline can catch fire and you could be burned. HOW TO AVOID THE HAZARD Always turn off the engine when refueling. Do not refuel right after the ...

[Page 13] Yamaha YFM35XY

1-5 1 WHAT CAN HAPPEN Exhaust fumes are poisonous and may cause loss of consciousness and death within a short time. HOW TO AVOID THE HAZARD Always operate your ATV in an area with ad- equate ventilation. U3D513E0.book Page 5 Monday, May 19, 2008 ...

[Page 14] Yamaha YFM35XY

2-1 2 EBU17660 LOCATION OF THE WARNING AND SPECIFICATION LABELS U3D513E0.book Page 1 Monday, May 19, 2008 3:19 PM ...

[Page 15] Yamaha YFM35XY

2-2 2 EBU17670 Read and understand all of the labels on your ATV. These labels contain important information for safe and proper operation. Never remove any labels from your ATV. If a label becomes difficult to read or comes off, request a replace- m...

[Page 16] Yamaha YFM35XY

2-3 2 U3D513E0.book Page 3 Monday, May 19, 2008 3:19 PM ...

[Page 17] Yamaha YFM35XY

3-1 3 EBU17680 DESCRIPTION EBU17690 Left view EBU17700 Right view 1. Front shock absorber assembly spring preload adjusting ring 2. Fuel cock 3. Air filter case 4. Fuses 5. Storage compartment and tool kit 6. Seat lock lever 7. Rear shock absorber ...

[Page 18] Yamaha YFM35XY

3-2 3 EBU17712 Controls and instruments TIP The ATV you have purchased may differ slightly from the figures shown in this manual. 1. Rear brake lever 2. Handlebar switches 3. Starter (choke) 4. Drive select lever 5. Main switch 6. Fuel tank cap 7. Fr...

[Page 19] Yamaha YFM35XY

4-1 4 EBU17722 INSTRUMENT AND CONTROL FUNCTIONS WARNING EWB00010 Indicates a potential hazard that could result in serious injury or death. EBU17760 Main switch The positions of the main switch are as follows: ON All electrical systems are supplied ...

[Page 20] Yamaha YFM35XY

4-2 4 EBU17813 Indicator lights and warning light EBU17830 Reverse indicator light “” This indicator light comes on when the transmis- sion is in the reverse position. EBU17860 Neutral indicator light “” This indicator light comes on when ...

[Page 21] Yamaha YFM35XY

4-3 4 EBU18061 Handlebar switches EBU18080 Engine stop switch “ / ” Set this switch to “” before starting the engine. The engine stop switch controls the ignition and stops the engine when it is running. Use this switch to stop the engine i...

[Page 22] Yamaha YFM35XY

4-4 4 EBU18270 Throttle lever Once the engine is running, movement of the throt- tle lever will increase the engine speed. Regulate the speed of the ATV by varying the throttle position. Because the throttle is spring- loaded, the ATV will decelerat...

[Page 23] Yamaha YFM35XY

4-5 4 crease the maximum engine power available and the maximum speed of the ATV, turn the adjusting screw in direction (b). 3. Tighten the locknut. WARNING EWB00190 EBU18391 Front brake lever The front brake lever is located on the right handle- ba...

[Page 24] Yamaha YFM35XY

4-6 4 EBU18442 Brake pedal and rear brake lever The brake pedal is located on the right side of the ATV and the rear brake lever is located on the left handlebar. To apply the rear brake, push down on the brake pedal or pull the brake lever toward t...

[Page 25] Yamaha YFM35XY

4-7 4 EBU18450 Parking brake Use the parking brake before starting the engine or parking the ATV, especially on a slope. Apply the rear brake lever and push down the lock plate to apply the parking brake. Squeeze the rear brake lever to release the ...

[Page 26] Yamaha YFM35XY

4-8 4 EBU18720 Fuel tank cap Remove the fuel tank cap by turning it counter- clockwise. EBU18730 Fuel Make sure that there is sufficient fuel in the tank. Fill the fuel tank to the bottom of the filler tube as shown. 1. Drive select lever 1. Fuel t...

[Page 27] Yamaha YFM35XY

4-9 4 NOTICE ECB00070 Use only unleaded gasoline. The use of leaded gasoline will cause severe damage to internal engine parts, such as the valves and piston rings, as well as to the exhaust system. Your Yamaha engine has been designed to use regular...

[Page 28] Yamaha YFM35XY

4-10 4 WARNING EWB00270 EBU18820 Fuel cock The fuel cock supplies fuel from the tank to the car- buretor while also filtering it. The fuel cock lever positions are explained as fol- lows and shown in the illustrations. OFF With the fuel cock lever i...

[Page 29] Yamaha YFM35XY

4-11 4 ON With the fuel cock lever in this position, fuel flows to the carburetor. Turn the fuel cock lever to this position when starting the engine and riding. RES This indicates reserve. With the fuel cock lever in this position, the fuel reserve ...

[Page 30] Yamaha YFM35XY

4-12 4 Move the starter (choke) in direction (b) to turn off the starter (choke). See the “Starting a cold engine” section on page 6-1 for proper operation. EBU26981 Seat To remove the seat Push the seat lock lever backward and pull up the seat ...

[Page 31] Yamaha YFM35XY

4-13 4 To install the seat Fit the slot in the seat onto the projection on the front cowling, insert the projections on the front of the seat into the seat holders, and then push on the seat at the rear. TIP Make sure that the seat is securely fitted...

[Page 32] Yamaha YFM35XY

4-14 4 ● Do not exceed the maximum load of 100.0 kg (220 lb) for the ATV. TIP Drain plugs are fitted at the bottom of the storage compartment. If any water collects in the storage compartment, remove the drain plugs, drain the water, and then insta...

[Page 33] Yamaha YFM35XY

4-15 4 WARNING EWB00350 EBU19021 Adjusting the rear shock absorber as- sembly The spring preload can be adjusted to suit the rid- er’s weight and the riding conditions. Adjust the spring preload as follows. Turn the adjusting ring in direction (a)...

[Page 34] Yamaha YFM35XY

4-16 4 TIP A special wrench can be obtained at a Yamaha dealer to make this adjustment. WARNING EWB00010 Indicates a potential hazard that could result in serious injury or death. 1. Spring preload adjusting ring 2. Position indicator 1. Special wren...

[Page 35] Yamaha YFM35XY

5-1 5 EBU19200 PRE-OPERATION CHECKS EBU19213 Pre-operation check list Before operating this ATV, be sure to check the items listed in the following table. WARNING EWB00470 TIP The maintenance of some items in the table has to be performed by a Yamah...

[Page 36] Yamaha YFM35XY

5-2 5 Engine oil • Check oil level in engine, and add recommended oil to specified lev- el if necessary. • Check ATV for oil leakage. Correct if necessary. 5-3, 8-11 Final gear oil • Check ATV for oil leakage. Correct if necessary. 5-3, 8-15 Fr...

[Page 37] Yamaha YFM35XY

5-3 5 EBU19530 Fuel Make sure that there is sufficient fuel in the tank. (See page 4-8.) WARNING EWB00500 EBU19560 Engine oil Make sure that the engine oil is at the specified lev- el. Add oil as necessary. (See page 8-11.) EBU19590 Final gear oil ...

[Page 38] Yamaha YFM35XY

5-4 5 EBU27660 Front and rear brakes Brake levers and brake pedal ● Check that there is no free play in the front brake lever. If there is free play, have a Yamaha dealer check the brake system. ● Check for correct free play in the rear brake le...

[Page 39] Yamaha YFM35XY

5-5 5 EBU19761 Throttle lever Check the operation of the throttle lever. It must open smoothly and spring back to the idle position when released. Have a Yamaha dealer correct if necessary. U3D513E0.book Page 5 Monday, May 19, 2008 3:19 PM ...

[Page 40] Yamaha YFM35XY

5-6 5 EBU19802 Tires WARNING EWB00552 POTENTIAL HAZARD Operating this ATV with improper tires, or with improper or uneven tire pressure. WHAT CAN HAPPEN Use of improper tires on this ATV, or opera- tion of this ATV with improper or uneven tire press...

[Page 41] Yamaha YFM35XY

5-7 5 EBU19821 Measuring the tire pressure Use the low-pressure tire gauge. TIP The low-pressure tire gauge is included as stan- dard equipment. Make two measurements of the tire pressure and use the second reading. Dust or dirt in the gauge could c...

[Page 42] Yamaha YFM35XY

5-8 5 EBU19830 Tire wear limit Replace the tire when the tire groove decreases to 3 mm (0.12 in). EBU19840 Chassis fasteners Make sure that all nuts, bolts and screws are prop- erly tightened. EBU19850 Instruments, lights and switches Check that a...

[Page 43] Yamaha YFM35XY

6-1 6 EBU19870 OPERATION WARNING EWB00010 Indicates a potential hazard that could result in serious injury or death. EBU19890 WARNING EWB00610 EBU26940 Starting a cold engine WARNING EWB00620 NOTICE ECB00150 See the “Engine break-in” section on ...

[Page 44] Yamaha YFM35XY

6-2 6 4. Shift the drive select lever into the neutral po- sition. The neutral indicator light should come on. If the indicator light does not come on, have a Yamaha dealer check the electrical cir- cuit. TIP The engine can be started under the follo...

[Page 45] Yamaha YFM35XY

6-3 6 7. If the engine is started with the starter (choke) in position (1), the starter (choke) should be returned to position (2) to warm up the engine. If the engine is started with the starter (choke) in position (2), keep the starter (choke) in t...

[Page 46] Yamaha YFM35XY

6-4 6 3. Open the throttle lever gradually. Shifting: Reverse 1. Bring the ATV to a complete stop. 2. Apply the brake pedal. 3. Shift from neutral to reverse and vice versa by moving the drive select lever along the shift guide. TIP When in reverse, ...

[Page 47] Yamaha YFM35XY

6-5 6 WARNING EWB00670 EBU20682 Engine break-in TIP ● For ATVs equipped with an odometer or an hour meter, follow the figures given in km (mi) or the figures given in hours. ● For ATVs not equipped with an odometer or hour meter, follow the figu...

[Page 48] Yamaha YFM35XY

6-6 6 EBU20700 Parking When parking the ATV, stop the engine, shift the drive select lever into the forward position, apply the parking brake, and then turn the fuel cock to “OFF”. EBU20750 Parking on a slope WARNING EWB00760 1. Bring the ATV t...

[Page 49] Yamaha YFM35XY

6-7 6 ● Choose only accessories designed for your ATV. Your Yamaha dealer has a variety of gen- uine Yamaha accessories. Other accessories may also be available on the market. However, it is not possible for Yamaha to test all non- Yamaha accessori...

[Page 50] Yamaha YFM35XY

6-8 6 ● Tie down cargo securely to the carriers. Make sure cargo in the trailer cannot move around. A shifting load can cause an accident. ● Make sure the load does not interfere with con- trols or your ability to see where you are going. ● Rid...

[Page 51] Yamaha YFM35XY

7-1 7 EBU21131 RIDING YOUR ATV U3D513E0.book Page 1 Monday, May 19, 2008 3:19 PM ...

[Page 52] Yamaha YFM35XY

7-2 7 WARNING EWB00010 Indicates a potential hazard that could result in serious injury or death. EBU26962 GETTING TO KNOW YOUR ATV This ATV is intended for recreational use by expe- rienced operators only. Even if you are an experi- enced operator o...

[Page 53] Yamaha YFM35XY

7-3 7 Riding your ATV requires skills acquired through practice over a period of time. Take the time to learn the basic techniques well before attempting more difficult maneuvers. Not recommended for children under 16 years of age. WARNING EWB00901 H...

[Page 54] Yamaha YFM35XY

7-4 7 This ATV is designed to carry operator and car- go only – passengers prohibited. WARNING EWB00910 POTENTIAL HAZARD Carrying a passenger on this ATV. WHAT CAN HAPPEN Greatly reduces your ability to balance and control this ATV. Could cause an ...

[Page 55] Yamaha YFM35XY

7-5 7 Apparel WARNING EWB00920 POTENTIAL HAZARD Operating this ATV without wearing an ap- proved motorcycle helmet, eye protection and protective clothing. WHAT CAN HAPPEN Operating without an approved motorcycle helmet increases your chances of a se...

[Page 56] Yamaha YFM35XY

7-6 7 Do not operate after consuming alcohol or drugs. The operator’s performance capability is reduced by the influence of alcohol or drugs. WARNING EWB00930 Pre-operation checks Always perform the pre-operation checks listed on page 5-1 before ri...

[Page 57] Yamaha YFM35XY

7-7 7 WARNING EWB00950 WARNING EWB00010 Indicates a potential hazard that could result in serious injury or death. Do not operate at speeds too fast for your skills or the conditions. WARNING EWB00960 POTENTIAL HAZARD Operating this ATV with improper...

[Page 58] Yamaha YFM35XY

7-8 7 Speed limiter For riders less experienced with this model, the throttle lever housing is equipped with a speed lim- iter. The speed limiter keeps the throttle from fully opening, even when the throttle lever is pushed to the maximum. Turning in...

[Page 59] Yamaha YFM35XY

7-9 7 During operation Always keep your feet on the footboards during op- eration, otherwise they may contact the rear wheels. HOW TO AVOID THE HAZARD Never exceed the stated load capacity for this ATV. Cargo should be properly distributed and se- cu...

[Page 60] Yamaha YFM35XY

7-10 7 WARNING EWB00980 Avoid wheelies and jumping. You may lose control of the ATV or overturn. WARNING EWB00990 POTENTIAL HAZARD Removing hands from handlebars or feet from footboards during operation. WHAT CAN HAPPEN Removing even one hand or foot...

[Page 61] Yamaha YFM35XY

7-11 7 Modifications WARNING EWB01000 POTENTIAL HAZARD Operating this ATV with improper modifica- tions. WHAT CAN HAPPEN Improper installation of accessories or mod- ification of this ATV may cause changes in handling which in some situations could l...

[Page 62] Yamaha YFM35XY

7-12 7 Exhaust system The exhaust system on the ATV is very hot during and following operation. To prevent burns, avoid touching the exhaust system. Park the ATV in a place where pedestrians or children are not likely to touch it. WARNING EWB01010 BE...

[Page 63] Yamaha YFM35XY

7-13 7 Do not ride on any public road, street, or highway. Riding on public roads can result in collisions with other vehicles. WARNING EWB01030 HOW TO AVOID THE HAZARD Always avoid paved surfaces, including sidewalks, driveways, parking lots and str...

[Page 64] Yamaha YFM35XY

7-14 7 Know the terrain where you ride. Ride cautiously in unfamiliar areas. Stay alert for holes, rocks, or roots in the terrain, and other hidden hazards which may cause the ATV to upset. WARNING EWB01040 WARNING EWB01050 POTENTIAL HAZARD Failure t...

[Page 65] Yamaha YFM35XY

7-15 7 When riding in an area where you might not easily be seen, such as desert terrain, mount a caution flag on the ATV. DO NOT use the flag pole bracket as a trailer hitch. WARNING EWB01060 HOW TO AVOID THE HAZARD Do not operate on excessively rou...

[Page 66] Yamaha YFM35XY

7-16 7 Do not ride in areas posted “no trespassing”. Do not ride on private property without getting per- mission. Select a large, flat area off-road to become familiar with your ATV. Make sure that this area is free of obstacles and other riders...

[Page 67] Yamaha YFM35XY

7-17 7 used to allow the ATV to make turns quickly and easily. It is essential that this skill be learned first at low speed. WARNING EWB01080 As you approach a curve, slow down and begin to turn the handlebars in the desired direction. As you do so,...

[Page 68] Yamaha YFM35XY

7-18 7 Improper riding procedures such as abrupt throttle changes, excessive braking, incorrect body move- ments, or too much speed for the sharpness of the turn may cause the ATV to tip. If the ATV begins to tip over to the outside while negotiating...

[Page 69] Yamaha YFM35XY

7-19 7 HOW TO AVOID THE HAZARD Always follow proper procedures for climb- ing hills as described in this Owner’s Manu- al. Always check the terrain carefully before you start up any hill. Never climb hills with excessively slippery or loose surface...

[Page 70] Yamaha YFM35XY

7-20 7 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 ATV around while you still have forward motion (provided you have the room to do so) and go down the hill. WARNIN...

[Page 71] Yamaha YFM35XY

7-21 7 If you start to roll backwards, DO NOT apply the rear brake to stop or try to put the ATV in gear. The ATV could easily tip over backwards. Instead, ap- ply the front brake gradually, or dismount the ATV immediately on the uphill side. WARNING...

[Page 72] Yamaha YFM35XY

7-22 7 RIDING DOWNHILL When riding your ATV downhill, shift your weight as far to the rear and uphill side of the ATV as pos- sible. Move back on the seat and sit with your arms straight. Improper braking may cause a loss of traction. Use caution whi...

[Page 73] Yamaha YFM35XY

7-23 7 U3D513E0.book Page 23 Monday, May 19, 2008 3:19 PM ...

[Page 74] Yamaha YFM35XY

7-24 7 CROSSING A SLOPE Traversing a sloping surface on your ATV requires you to properly position your weight to maintain proper balance. Be sure that you have learned the basic riding skills on flat ground before attempting to cross a sloping surfa...

[Page 75] Yamaha YFM35XY

7-25 7 U3D513E0.book Page 25 Monday, May 19, 2008 3:19 PM ...

[Page 76] Yamaha YFM35XY

7-26 7 CROSSING THROUGH SHALLOW WATER The ATV can be used to cross slow moving, shal- low water of up to a maximum of 35 cm (14 in) in depth. Before entering the water, choose your path carefully. Enter where there is no sharp drop off, and avoid roc...

[Page 77] Yamaha YFM35XY

7-27 7 NOTICE ECB00730 After riding your ATV in water, be sure to drain the trapped water by removing the check hose at the bottom of the air filter case, the V-belt cooling duct check hose, the drive select lever box check hose and the storage compa...

[Page 78] Yamaha YFM35XY

7-28 7 RIDING OVER ROUGH TERRAIN Riding over rough terrain should be done with cau- tion. Look out for obstacles which could cause damage to the ATV or could lead to an upset or ac- cident. Be sure to keep your feet firmly mounted on the footboards a...

[Page 79] Yamaha YFM35XY

7-29 7 SLIDING AND SKIDDING Care should be used when riding on loose or slip- pery surfaces since the ATV may slide. If unex- pected and uncorrected, sliding could lead to an accident. To reduce the tendency for the front wheels to slide in loose or ...

[Page 80] Yamaha YFM35XY

7-30 7 With practice, over a period of time, skill at con- trolled sliding can be developed. The terrain should be chosen carefully before attempting such maneuvers, since both stability and control are re- duced. Bear in mind that sliding maneuvers ...

[Page 81] Yamaha YFM35XY

7-31 7 ● If your ATV begins to tip while turning: Lean more into the turn to regain balance. If nec- essary, gradually let off the throttle and/or steer to the outside of the turn. (See page 7-16.) ● If your ATV starts to slide sideways: Steer in...

[Page 82] Yamaha YFM35XY

8-1 8 EBU21648 PERIODIC MAINTENANCE AND MINOR REPAIR EBU21660 Safety is an obligation of the owner. Periodic in- spection, adjustment and lubrication will keep your ATV in the safest and best operating condition possible. The most important points of...

[Page 83] Yamaha YFM35XY

8-2 8 The service information included in this manual and the tools provided in the owner’s tool kit are in- tended to assist you in the performance of preven- tive maintenance and minor repairs. However, additional tools such as a torque wrench ma...

[Page 84] Yamaha YFM35XY

8-3 8 EBU21742 Periodic maintenance chart for the emission control system TIP ● For ATVs not equipped with an odometer or an hour meter, follow the month maintenance intervals. ● For ATVs equipped with an odometer or an hour meter, follow the km...

[Page 85] Yamaha YFM35XY

8-4 8 6 * Exhaust system • Check for leakage and replace gasket(s) if neces- sary. • Check for looseness and tighten all screw clamps and joints if necessary. √√√ 7 Spark arrester • Clean. √√√ NO. ITEM CHECK OR MAINTENANCE JOB INI...

[Page 86] Yamaha YFM35XY

8-5 8 EBU21864 General maintenance and lubrication chart NO. ITEM CHECK OR MAINTENANCE JOB INITIAL EVERY Whichev- er comes first month136612 km (mi) 320 (200) 1300 (800) 2500 (1600) 2500 (1600) 5000 (3200) hours 20 80 160 160 320 1 Air filte...

[Page 87] Yamaha YFM35XY

8-6 8 9 * V-belt • Check for wear, cracks or other damage, and re- place if necessary. √ √√√ 10 * Chassis fasteners • Make sure that all nuts, bolts, and screws are properly tightened. √√√√√ 11 * Shock absorber as- semblies •...

[Page 88] Yamaha YFM35XY

8-7 8 EBU28390 TIP ● The air filter needs more frequent service if you are riding in unusually wet or dusty areas. ● Hydraulic brake service • Regularly check and, if necessary, correct the brake fluid level. • Every two years replace the int...

[Page 89] Yamaha YFM35XY

8-8 8 WARNING EWB00010 Indicates a potential hazard that could result in serious injury or death. EBU23080 Removing and installing the panel The panel shown needs to be removed to perform some of the maintenance jobs described in this chapter. Refer...

[Page 90] Yamaha YFM35XY

8-9 8 EBU23211 Checking the spark plug The spark plug is an important engine component, which is easy to check. Since heat and deposits will cause any spark plug to slowly erode, the spark plug should be removed and checked in accor- dance with the ...

[Page 91] Yamaha YFM35XY

8-10 8 2. Check the spark plug for electrode erosion and excessive carbon or other deposits, and replace it if necessary. To install the spark plug 1. Measure the spark plug gap with a wire thick- ness gauge and, if necessary, adjust the gap to speci...

[Page 92] Yamaha YFM35XY

8-11 8 TIP If a torque wrench is not available when installing a spark plug, a good estimate of the correct torque is 1/4–1/2 turn past finger tight. However, the spark plug should be tightened to the specified torque as soon as possible. 4. Instal...

[Page 93] Yamaha YFM35XY

8-12 8 TIP The engine oil should be between the minimum and maximum level marks. 5. If the engine oil is at or below the minimum level mark, add sufficient oil of the recom- mended type to raise it to the correct level. 6. Insert the dipstick into th...

[Page 94] Yamaha YFM35XY

8-13 8 4. Remove the oil filter cartridge with an oil filter wrench. TIP An oil filter wrench is available at a nearby Yamaha dealer. 5. Apply a thin coat of engine oil to the O-ring of the new oil filter cartridge. TIP Make sure that the O-ring is p...

[Page 95] Yamaha YFM35XY

8-14 8 7. Install the engine oil drain bolt, and then tight- en it to the specified torque. 8. Refill with the specified amount of the recom- mended engine oil, and then install and tight- en the engine oil filler cap. TIP Be sure to wipe off spilled...

[Page 96] Yamaha YFM35XY

8-15 8 9. Start the engine, and then let it idle for several minutes while checking it for oil leakage. If oil is leaking, immediately turn the engine off and check for the cause. 10. Turn the engine off, wait at least ten minutes, and then check the...

[Page 97] Yamaha YFM35XY

8-16 8 3. If the oil is below the brim of the filler hole, add sufficient oil of the recommended type to raise it to the correct level. 4. Install the oil filler bolt, and then tighten it to the specified torque. To change the final gear oil 1. Place...

[Page 98] Yamaha YFM35XY

8-17 8 5. Install the drain bolt, and then tighten it to the specified torque. 6. Refill with the recommended final gear oil to the brim of the filler hole as shown. NOTICE ECB00420 Be sure no foreign material enters the final gear case. 7. Install t...

[Page 99] Yamaha YFM35XY

8-18 8 8. Check the final gear case for oil leakage. If oil is leaking, check for the cause. 9. Install the final gear case guard by installing the bolts and tightening them to the specified torque. EBU23635 Cleaning the air filter element The air f...

[Page 100] Yamaha YFM35XY

8-19 8 4. Pull the air filter element out of the air filter case. 5. Pull off the air filter element lock plate, and then remove the sponge material from the air filter element frame. 1. Air filter case cover holder 2. Air filter case cover 1. Air fi...