Page 1 READ THIS MANUAL CAREFULLY! It contains important safety information. OWNER’S MANUAL YFM660FP WARNING This ATV should not be ridden by anyone under 16 years of age. LIT-11626-15-01 5KM-28199-10...
Page 2 EBU00776...
Page 5 Yamaha experience in the production of fine sporting, touring, and pace-setting racing machines. With the purchase of this Yamaha, you can now appreciate the high degree of crafts- manship and reliability that have made Yamaha a leader in these fields.
Page 6: Warning
EBU00010 I MPORTANT MANUAL INFORMATION FAILURE TO FOLLOW THE WARNINGS CONTAINED IN THIS MANUAL CAN RESULT IN SERIOUS INJURY OR DEATH. Particularly important information is distinguished in this manual by the following notations: The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED! Failure to follow WARNING instructions could result in severe WARNING...
Page 7 Please check your local riding laws and regulations before operating this machine. EBU00711 YFM660FP OWNER’S MANUAL © 2001 by Yamaha Motor Corporation, AFFIX DEALER U.S.A. 1st Edition, March 2001 LABEL HERE All rights reserved. Any reprinting or un-...
Page 8: Table Of Contents
EBU00014 CONTROL FUNCTIONS....4-1 WARNING Main switch ........4-1 Indicates a potential hazard that could Indicator and warning lights .....4-2 result in serious injury or death. Speedometer unit ......4-5 Fuel gauge ........4-6 Handlebar switches ......4-7 CONTENTS Throttle lever ........4-12 Speed limiter ........4-13 Front brake lever......4-14 LOCATION OF THE WARNING Rear brake pedal and lever ...4-14...
Page 9 PRE-OPERATION CHECKS ... 5-1 Parking on a slope......6-9 Front and rear brakes ..... 5-2 Accessories and loading ....6-10 Fuel ..........5-4 Engine oil ........5-6 RIDING YOUR ATV ......7-1 Final gear oil........5-7 Getting to know your ATV ....7-3 Differential gear oil ......
Page 10 PERIODIC MAINTENANCE AND Rear brake lever and pedal ADJUSTMENT........8-1 adjustment ........8-40 Owner’s manual and tool kit.... 8-1 Adjusting the rear brake light Periodic maintenance/lubrication ..8-3 switch ...........8-42 Panel removal and installation ..8-5 Cable inspection and lubrication..8-43 Engine oil........8-12 Brake lever and brake pedal Final gear oil ........
Page 11 CLEANING AND STORAGE.... 9-1 A. Cleaning........9-1 B. Storage ........9-3 SPECIFICATIONS......10-1 NOISE REGULATION....11-1 MAINTENANCE RECORD .... 12-1 ATV LIMITED WARRANTY ... 13-1 YAMAHA EXTENDED SERVICE (Y.E.S.) ........... 14-1...
Page 12: Location Of The Warning And Specification Labels
EBU00464 LOCATION OF THE WARNING AND SPECIFICATION LABELS...
Page 13 NEVER sit here. 3MX-24875-A0 Never remove any labels from your ATV. If a label becomes difficult to read or comes off, a replacement label is available from your Yamaha dealer. LOAD LIMIT 85 kg {187 lbs} 4SH-24877-A0 MAXIMUM LOADING LIMIT...
Page 15 WARNING UNDER Operating this ATV if you are under the age of 16 increases your chance of severe injury or death. NEVER operate this ATV if you are under age 16. 5FE-21697-01 WARNING Turning the ATV in 4WD-LOCK(“DIFF. LOCK”) takes more effort. Operate at a slow speed and allow extra time and distance for maneuvers to avoid loss of control.
Page 16: Safety Information
EBU00926* SAFETY INFORMATION AN ATV IS NOT A TOY AND CAN BE HAZARDOUS TO OPERATE. An ATV handles differently from other vehicles including motorcycles and cars. A collision or rollover can occur quickly, even during routine maneuvers such as turning and riding on hills or over obstacles, if you fail to take proper precautions.
Page 17 Never operate an ATV without wearing an approved motorcycle helmet that fits properly. You should also wear eye protection (goggles or face shield), gloves, boots, long-sleeved shirt or jacket, and long pants. Never consume alcohol or drugs before or while operating this ATV. Never operate at speeds too fast for your skills or the conditions.
Page 18 Always follow proper procedures for climbing hills as described in this manual. Check the ter- rain carefully before you start up any hill. Never climb hills with excessively slippery or loose surfaces. Shift your weight forward. Never open the throttle suddenly. Never go over the top of a hill at high speed.
Page 19 Always be careful when skidding or sliding. Learn to safely control skidding or sliding by prac- ticing at low speeds and on level, smooth terrain. On extremely slippery surfaces, such as ice, go slowly and be very cautious in order to reduce the chance of skidding or sliding out of con- trol.
Page 20 WARNING When transporting the ATV in another vehicle, be sure it is kept upright and POTENTIAL HAZARD that the fuel cock is in the “OFF” posi- Improper handling of gasoline. tion. Otherwise, fuel may leak out of the WHAT CAN HAPPEN carburetor or fuel tank.
Page 21 WARNING POTENTIAL HAZARD Starting or running the engine in a closed area. 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 adequate ventilation.
Page 22: Description And Machine Identification
EBU00032 DESCRIPTION AND MACHINE IDENTIFICATION 1. Rear shock absorber spring 15. Engine oil dipstick preload adjusting ring 16. Recoil starter 2. Storage compartment and tool kit 17. Coolant reservoir 3. Air filter case 18. Drive select lever case check 4. Front brake master cylinder hose 5.
Page 23: Identification Number Records
This number can be used for ordering a new when ordering spare parts from a Yamaha key. dealer or for reference in case the vehicle is stolen.
Page 24: Vehicle Identification Number
Record the information on this la- bel in the space provided. This information will be needed to order spare parts from your Yamaha dealer. 1. Vehicle identification number NOTE: The vehicle identification number is used to 1.
Page 25: Control Functions
EBU00039 CONTROL FUNCTIONS WARNING Indicates a potential hazard that could result in serious injury or death. EBU00041 Main switch Functions of the respective switch positions are as follows: 1. Main switch Engine can be started only at this position and the headlight and taillight come on when the light switch is on.
Page 26: Indicator And Warning Lights
EBU00802 EBU00839 Indicator and warning lights Differential gear lock indicator light “DIFF. LOCK” This indicator light comes on along with the differential gear lock indicator in the display when the differential gear lock switch is set to the “4WD-LOCK” position. EBU00838 Low-range indicator light “L”...
Page 27 If the indicator light flashes or the speedome- when the “4WD”/“LOCK” switch is set to the ter does not show the speed while riding, “4WD-LOCK” position. have a Yamaha dealer check the speed sen- sor circuit. NOTE: Due to the synchronizing mechanism in the...
Page 28 EBU00860 Coolant temperature warning light “ ” When the coolant temperature reaches a specified level, this light comes on to warn that the coolant temperature is too hot. If the light comes on during operation, stop the en- gine as soon as it is safe to do so and allow the engine to cool down for about 10 minutes.
Page 29: Speedometer Unit
EBU00844* Speedometer unit a clock an hour meter (which shows the total time the key has been turned to “ON”) Odometer and tripmeter modes Pushing the “TRIP/ODO” button switches the display between the odometer mode “ODO” and the tripmeter modes “A” and “B” in the fol- lowing order: ODO→TRIP A→TRIP B→ODO To reset a tripmeter, select it by pushing the...
Page 30: Fuel Gauge
EBU00843 Clock mode Fuel gauge Pushing the “ ”/“ ” button switches the The fuel gauge indicates the amount of fuel in display between the clock mode “CLOCK” the fuel tank. The display segments of the fuel and the hour meter mode “HOUR” in the fol- gauge disappear towards “E”...
Page 31: Handlebar Switches
EBU00053 Handlebar switches CAUTION: Do not use the headlight with the engine turned off for more than thirty minutes. The battery may discharge to the point that the starter motor will not operate properly. If this should happen, remove the battery and recharge it. EBU00606 Engine stop switch 1.
Page 32 EBU00607 Start switch “ ” The starter motor cranks the engine when this switch is pushed. CAUTION: See starting instructions prior to starting the engine. (See page 6-1 for details.) 1. On-command four-wheel drive switch “2WD”/“4WD” 2. Differential gear lock switch “4WD”/“LOCK” EBU00842* On-command four-wheel drive and differ- ential gear lock switches...
Page 33 Four-wheel drive (4WD): Power is supplied WARNING to the rear and front wheels. POTENTIAL HAZARD Four-wheel drive with the differential gear Changing from 2WD to 4WD or from locked (4WD-LOCK): Power is supplied to 4WD to 4WD-LOCK (“DIFF.LOCK”), or the rear and front wheels when the differen- vice-versa while the ATV is moving.
Page 34 1. Lever 1. Differential gear lock switch “4WD”/“LOCK” 2. On-command four-wheel drive switch “2WD”/“4WD” 2. Lever On-command four-wheel drive switch Differential gear lock switch “4WD”/ “2WD“/“4WD” “LOCK” To change from 2WD to 4WD, stop the ATV, To lock the differential gear in 4WD, make sure the on-command four-wheel-drive switch and then set the switch to “4WD”.
Page 35 WARNING NOTE: When the switch is set to “LOCK”, the dif- POTENTIAL HAZARD ferential gear lock indicator light will flash Riding too fast while the ATV is in 4WD- until the differential gear is locked. LOCK. When the indicator light is flashing, turn- WHAT CAN HAPPEN ing the handlebar back and forth will help All wheels turn at the same speed when...
Page 36: Throttle Lever
Check the operation of the throttle lever before you start the engine. If it does not work smoothly, check for the cause. Correct the problem before riding the ATV. Consult a Yamaha dealer if you 1. Throttle lever can’t find or solve the problem yourself. 4-12...
Page 37: Speed Limiter
EBU00066 Speed limiter WARNING The speed limiter keeps the throttle from fully POTENTIAL HAZARD opening, even when the throttle lever is Improper adjustment of the speed limit- pushed to the maximum. Screwing in the ad- er and throttle. juster limits the maximum engine power avail- WHAT CAN HAPPEN able and decreases the maximum speed of The throttle cable could be damaged.
Page 38: Front Brake Lever
EBU00070 Front brake lever The front brake lever is located on the right handlebar. Pull it toward the handlebar to ap- ply the front brake. 1. Rear brake pedal 1. Front brake lever EBU00073 Rear brake pedal and lever The brake pedal is located on the right side of the machine and the brake lever is located on the left handlebar.
Page 39: Drive Select Lever
EBU00608 Drive select lever The drive select lever is used to shift your ma- chine into the low, high, neutral, reverse and park positions. (Refer to page 6-4 for the drive select lever operation.) 1. Drive select lever 4-15...
Page 40: Recoil Starter
EBU00855 Recoil starter WARNING Firmly grasp the handle and pull slightly until POTENTIAL HAZARD engagement can be felt. Then pull forcefully, Starting the engine without setting the being careful not to pull the rope all the way drive select lever to the park position out.
Page 41: Fuel Tank Cap
EBU00092 Fuel tank cap Remove the fuel tank cap by turning it coun- terclockwise. 1. Fuel tank cap 4-17...
Page 42: Fuel Cock
EBU00093 Fuel cock OFF Position The fuel cock supplies fuel from the fuel tank to the carburetor. The fuel cock has three positions. OFF: With the lever in this position fuel will not flow. Always turn the lever to this position when the engine is not running.
Page 43: Starter (Choke)
EBU00095 Starter (choke) “ ” RES Position Starting a cold engine requires a richer air-fuel mixture. A separate starter circuit supplies this mixture. Move in direction a to turn on the starter (choke). Move in direction b to turn off the starter (choke).
Page 44: Seat
EBU00567 Seat To install the seat, insert the projections on To remove the seat, pull the seat lock lever the front of the seat into the seat holders and upward and pull up the seat at the rear. push down on the seat at the rear. NOTE: Make sure that the seat is securely fitted.
Page 45: Storage Compartment
EBU00858 EBU00582 Storage compartment Front carrier The storage compartment is located under Maximum load limit: 45 kg (99 lb) the seat. (See page 4-20 for seat removal and installation procedures.) When storing the owner’s manual or other EBU00583 documents in the storage compartment, be Rear carrier sure to wrap them in a plastic bag so that they Maximum load limit: 85 kg (187 lb)
Page 46: Front And Rear Shock Absorber Adjustment
EBU00856 Front and rear shock absorber adjustment The spring preload can be adjusted to suit the rider’s weight and riding conditions. NOTE: When adjusting the rear shock absorbers, the rear wheels need to be removed. (See page 8-45 for removal and installation proce- dures.) Adjust the spring preload as follows: 1.
Page 47 HOW TO AVOID THE HAZARD Always adjust the shock absorbers on 1. Special wrench the left and right side to the same set- ting. EBU00643 NOTE: A special wrench can be obtained at a Yamaha dealer. 4-23...
Page 48: Auxiliary Dc Jack
EBU00748 Auxiliary DC jack The auxiliary DC jack is located at the front right side of the ATV. The auxiliary DC jack can be used for suitable work lights, radios, etc. The auxiliary DC jack can only be used when the main switch is in the “ON” position. 1.
Page 49 4. When the auxiliary DC jack is not being used, cover it with the cap. CAUTION: Do not use accessories requiring more than the above maximum capac- ity. This may overload the circuit and cause the fuse to blow. If accessories are used without the engine running or with the headlight turned on, the battery will lose its charge and engine starting may be-...
Page 50: Pre-Operation Checks
PRE-OPERATION CHECKS Before using this machine, check the following points: ITEM ROUTINE PAGE • Check operation, free play, fluid level and fluid leakage. 5-2 ~ 5-3, Brakes • Fill with DOT 4 brake fluid if necessary. 8-36 ~ 8-42 • Check fuel level. 5-4 ~ 5-5 Fuel •...
Page 51: Front And Rear Brakes
HOW TO AVOID THE HAZARD brakes are applied. If not, have the ma- Always inspect your ATV each time you chine inspected by a Yamaha dealer. use it to make sure the ATV is in safe op- 2. Brake fluid level erating condition.
Page 52 Apply the brakes firmly for one minute. If brakes. there is any leaking, have the machine in- WHAT CAN HAPPEN spected by a Yamaha dealer. You could lose braking ability, which 4. Brake operation could lead to an accident Test the brakes at slow speed after start-...
Page 53: Fuel
10%. Gaso- leaded gasoline will cause severe damage hol containing methanol is not recommended to the engine internal parts such as valves, by Yamaha because it may cause fuel system piston rings, exhaust system, etc. damage or vehicle performance problems.
Page 54 WARNING POTENTIAL HAZARD Improper care when refueling. WHAT CAN HAPPEN Fuel can spill, which can cause a fire and severe injury. Fuel expands when it heats up. If the fuel tank is overfilled, fuel could spill out due to heat from the engine or the sun. 1.
Page 55: Engine Oil
EBU00484 Engine oil CAUTION: Make sure the engine oil is at the specified Be sure to use motor oils that do not level. Add oil as necessary. (See pages 8-12 contain anti-friction modifiers. Pas- ~ 8-16.) senger car motor oils (often labeled “Energy Conserving”) contain anti- Recommended oil: friction additives which will cause...
Page 56: Final Gear Oil
EBU00493 EBU00678 Final gear oil Differential gear oil Make sure the final gear oil is at the specified Make sure the differential gear oil is at the level. Add oil as necessary. (See pages 8-16 specified level. Add oil as necessary. (See ~ 8-17 for details.) pages 8-18 ~ 8-19 for details.) Recommended oil:...
Page 57 WARNING CAUTION: Hard water or salt water is harmful to the POTENTIAL HAZARD engine. You may use distilled water if you Removing the radiator cap when the en- can’t get soft water. gine and radiator are still hot. WHAT CAN HAPPEN You could be burned by hot fluid and Reservoir tank capacity: steam blown out under pressure.
Page 58: Throttle Lever
EBU00152 Fittings and Fasteners Always check the tightness of chassis fittings and fasteners before a ride. Take the machine to a Yamaha dealer or refer to the Service Manual for correct tightening torque. EBU00803 Lights Check the headlight and tail/brake light to make sure they are in working condition.
Page 59: Tires
HOW TO AVOID THE HAZARD riding conditions. 1. The tires listed below have been ap- The following are minimums: proved by Yamaha Motor Co., Ltd. Front 32 kPa (0.32 kgf/cm , 4.6 psi) for this model. Other tire combina- Rear 27 kPa (0.27 kgf/cm , 3.9 psi)
Page 60 4. Use no more than the following pressures when seating the tire beads. Front 250 kPa (2.5 kgf/cm , 36 psi) Rear 250 kPa (2.5 kgf/cm , 36 psi) Higher pressures may cause the tire to burst. Inflate the tires very slowly and carefully.
Page 61: How To Measure Tire Pressure
EBU00159 How to measure tire pressure Use the low-pressure tire gauge. NOTE: The low-pressure tire gauge is included as standard equipment. Make two measure- ments of the tire pressure and use the second reading. Dust or dirt in the gauge could cause the first reading to be incorrect.
Page 62: Tire Wear Limit
EBU00160 Tire wear limit When the tire groove decreases to 3 mm (0.12 in) due to wear, replace the tire. a. 3 mm (0.12 in) 5-13...
Page 63: Operation
3. Turn the main switch to “ON” and the en- there is a control or function you do not gine stop switch to “ ”. understand, ask your Yamaha dealer. 4. Shift the drive select lever into the neutral or park position.
Page 64 25 °C (80 °F) and warm engine does not come on, ask a Yamaha dealer start position. to inspect its electric circuit. The engine can be started in any gear if the rear brake lever is applied.
Page 65: Starting A Warm Engine
NOTE: CAUTION: If the engine fails to start, release the See the “Engine break-in” section prior to start switch, then push the start switch operating the engine for the first time. again. Pause a few seconds before the next attempt. Each cranking should be as short as possible to preserve battery en- EBU00180 ergy.
Page 66: Drive Select Lever Operation And Reverse Driving
EBU00846 Drive select lever operation and reverse driving CAUTION: Before shifting, you must stop the ma- chine and return the throttle lever to the closed position. Otherwise, the transmis- sion may be damaged. Shifting: Neutral to High and High to Low 1.
Page 67 If the light does not the drive select lever along the shift come on, ask a Yamaha dealer to inspect guide. the reverse indicator light electrical cir- cuit.
Page 68 5. Open the throttle lever gradually and con- tinue to watch to the rear while backing. WARNING POTENTIAL HAZARD Improperly operating in reverse. WHAT CAN HAPPEN You could hit an obstacle or person be- hind you, resulting in serious injury. HOW TO AVOID THE HAZARD When you shift into reverse, make sure there are no obstacles or people behind...
Page 69: Engine Break-In
For this reason, we ask that you carefully read build up of heat. If any abnormality is noticed the following material. Because the engine is during this period, consult a Yamaha dealer. brand new, you must not put an excessive 1. 0 ~ 10 hours: load on it for the first several hours of running.
Page 70: Parking
EBU00612 2. 10 ~ 20 hours: Parking Avoid prolonged operation above 3/4 When parking, stop the engine and shift the throttle. Rev the machine freely but do drive select lever into the park position, then not use full throttle at any time. turn the fuel cock to the “OFF”...
Page 71: Parking On A Slope
EBU00615 Parking on a slope 1. Bring the machine to a stop by applying the brakes. WARNING 2. Stop the engine. POTENTIAL HAZARD 3. With the rear brake applied, shift the Parking on a hill or other incline. drive select lever to the park position. WHAT CAN HAPPEN The ATV could roll out of control, in- creasing the chance of an accident.
Page 72: Accessories And Loading
Choose only accessories designed for your dlebars which could make steering difficult, ATV. Your Yamaha dealer has a variety of an accessory that limits your ability to move genuine Yamaha accessories. Other ac-...
Page 73 EBU00231* Loading Do not exceed the maximum tongue Cargo or a trailer can change the stability and weight. You can measure tongue weight handling of an ATV. You must use common with a bathroom scale. Put the tongue of sense and good judgment when carrying car- the loaded trailer on the scale with the go or towing a trailer.
Page 74 Ride more slowly than you would without a WARNING load. The more weight you carry, the slow- POTENTIAL HAZARD er you should go. Although conditions vary, Overloading this ATV or carrying or tow- it is good practice not to exceed low range ing cargo improperly.
Page 75 EBU00956 WARNING Indicates a potential hazard that could result in serious injury or death. 6-13...
Page 76: Riding Your Atv
Riding Your...
Page 78: Getting To Know Your Atv
WARNING Indicates a potential hazard that could result in serious injury or death. ride, be sure you have read this Owner’s Man- GETTING TO KNOW YOUR ATV ual completely and understand the operation of This ATV is mainly for utility use, but may also the controls.
Page 79: Ride With Care And Good Judgement
JUDGEMENT Beginning and inexperienced operators should complete the certified training Get training if you are inexperienced. course offered by Yamaha. They should Beginners should get training from a certified then regularly practice the skills learned instructor. in the course and the operating tech- Become familiar with this ATV at slow speeds niques described in this Owner’s Manu-...
Page 80 Not recommended for children under 16 years of age. WARNING POTENTIAL HAZARD Failure to follow the age recommenda- tions for this ATV. WHAT CAN HAPPEN Use by children of ATVs that are not rec- ommended for their age can lead to se- vere injury or death of the child.
Page 81 This machine is designed to carry operator and cargo only - passengers prohibited. WARNING POTENTIAL HAZARD Carrying a passenger on this ATV. WHAT CAN HAPPEN Greatly reduces your ability to balance and control this ATV. Could cause an accident, resulting in harm to you and/ or your passenger.
Page 82 Apparel Operating without protective clothing WARNING increases your chances of severe injury in the event of an accident. Apparel HOW TO AVOID THE HAZARD POTENTIAL HAZARD Always wear an approved motorcycle Operating this ATV without wearing an helmet that fits properly. approved motorcycle helmet, eye pro- You should also wear: tection and protective clothing.
Page 83 Do not operate after consuming alcohol or WARNING drugs. POTENTIAL HAZARD Operator’s performance capability is reduced Operating this ATV after consuming al- by the influence of alcohol or drugs. cohol or drugs. WHAT CAN HAPPEN Could seriously affect your judgment. Could cause you to react more slowly.
Page 84 Pre-operation checks WARNING Always perform the pre-operation checks list- POTENTIAL HAZARD ed on page 5-1 before riding for safety and Operating this ATV with improper tires, proper care of the machine. or with improper or uneven tire pres- WARNING sure. POTENTIAL HAZARD WHAT CAN HAPPEN Failure to inspect the ATV before oper-...
Page 85 Speed limiter WARNING For riders less experienced with this model, Indicates a potential hazard that could this model is equipped with a speed limiter in result in serious injury or death. the throttle lever housing. The speed limiter keeps the throttle from fully opening, even Do not operate at speeds too fast for your when the throttle lever is pushed to the maxi- skills or the conditions.
Page 86 Loading and accessories WARNING Use extra caution when riding the machine POTENTIAL HAZARD with additional loads, such as accessories or Overloading this ATV or carrying or tow- cargo. The machine’s handling may be ad- ing cargo improperly. versely affected. Reduce your speed when WHAT CAN HAPPEN adding additional loads.
Page 87 During operation WARNING Always keep your feet on the footboards dur- POTENTIAL HAZARD ing operation. Otherwise your feet may con- Removing hands from handlebars or tact the rear wheels. feet from footboards during operation. WHAT CAN HAPPEN Removing even one hand or foot can re- duce your ability to control the ATV or could cause you to lose your balance and fall off of the ATV.
Page 88 Avoid wheelies and jumping. You may lose control of the machine or overturn. WARNING POTENTIAL HAZARD Attempting wheelies, jumps, and other stunts. WHAT CAN HAPPEN Increases the chance of an accident, in- cluding an overturn. HOW TO AVOID THE HAZARD Never attempt stunts, such as wheelies or jumps.
Page 89 Never modify this ATV through improp- er installation or use of accessories. All parts and accessories added to this ve- hicle should be genuine Yamaha or equivalent components designed for use on this ATV and should be installed and used according to instructions. If you have questions, consult an autho- rized ATV dealer.
Page 90 Exhaust system Do not touch the hot exhaust system. The exhaust system on the machine is very Do not park the machine in a place hot during and following operation. To prevent where others might be likely to touch it. burns, avoid touching the exhaust system.
Page 91: Be Careful Where You Ride
BE CAREFUL WHERE YOU RIDE This machine is designed for off-road use only. Riding on paved surfaces can cause loss of control. WARNING POTENTIAL HAZARD Operating this ATV on paved surfaces. WHAT CAN HAPPEN ATVs are designed for off-road use only. Paved surfaces may seriously affect handling and control of the ATV, and may cause the vehicle to go out of con-...
Page 92 Do not ride on any public road, street, or high- way. Riding on public roads can result in collisions with other vehicles. WARNING POTENTIAL HAZARD Operating this ATV on public streets, roads or highways. WHAT CAN HAPPEN You can collide with another vehicle. HOW TO AVOID THE HAZARD Never operate this ATV on any public street, road or highway, even a dirt or...
Page 93 Know the terrain where you ride. Ride cau- tiously in unfamiliar areas. Stay alert for holes, rocks, or roots in the terrain, and oth- er hidden hazards which may cause the ma- chine to upset. WARNING POTENTIAL HAZARD Failure to use extra care when operating this ATV on unfamiliar terrain.
Page 94 WARNING POTENTIAL HAZARD Failure to use extra care when operating on excessively rough, slippery or loose terrain. WHAT CAN HAPPEN Could cause loss of traction or vehicle control, which could result in an acci- dent, including an overturn. HOW TO AVOID THE HAZARD Do not operate on excessively rough, slippery or loose terrain until you have learned and practiced the skills neces-...
Page 95 When riding in an area where you might not WHAT CAN HAPPEN easily be seen, such as desert terrain, mount You could be in a collision. You could a caution flag on the machine. DO NOT use be injured. the flag pole bracket as a trailer hitch. HOW TO AVOID THE HAZARD Always mount a caution flag on the ma- chine to make you more visible.
Page 96 Select a large, flat area off-road to become fa- With the engine idling, shift the drive select le- miliar with your ATV. Make sure that this area ver to the low position “L” or the high position is free of obstacles and other riders. You “H”.
Page 97: Turning Your Atv
TURNING YOUR ATV HOW TO AVOID THE HAZARD To achieve maximum traction while riding off- Always follow proper procedures for road in 2WD or 4WD, the two rear wheels are turning as described in this Owner’s mounted solidly on one axle and turn together Manual.
Page 98 Once you have learned this technique you should be able to perform it at higher speeds or in tighter curves. Improper riding procedures such as abrupt throttle changes, excessive braking, incorrect body movements, or too much speed for the sharpness of the turn may cause the ATV to tip.
Page 99: Climbing Uphill
CLIMBING UPHILL HOW TO AVOID THE HAZARD Use proper riding techniques to avoid vehicle Never operate the ATV on hills too steep overturns on hills. Be sure that you can ma- for the ATV or for your abilities. Practice neuver your ATV well on flat ground before at- on smaller hills before attempting large tempting any incline and then practice riding hills.
Page 100 WARNING An obstacle, a sharp drop, or another vehicle or person could be on the other POTENTIAL HAZARD side of the hill. Climbing hills improperly. WHAT CAN HAPPEN Could cause loss of control or cause the ATV to overturn. HOW TO AVOID THE HAZARD Always follow proper procedures for climbing hills as described in this Own- er’s Manual.
Page 101 If you are climbing a hill and you find that you WARNING have not properly judged your ability to make POTENTIAL HAZARD it to the top, you should turn the ATV around Improperly crossing hills or turning on while you still have forward motion (provided hills.
Page 102 When crossing the side of a hill: Always follow proper procedures as de- scribed in the Owner’s Manual. Avoid hills with excessively slippery or loose surfaces. Shift your weight to the uphill side of the ATV. 7-27...
Page 103 the front and rear brakes gradually, or dis- If your ATV has stalled or stopped and you mount the ATV immediately on the uphill side. believe you can continue up the hill, restart WARNING carefully to make sure you do not lift the front POTENTIAL HAZARD wheels which could cause you to lose control.
Page 104 If you begin rolling backwards: Keep weight uphill. 2WD: Never apply the rear brake while rolling backwards. Apply the front brake. 4WD or 4WD-LOCK: Apply both front and rear brakes gradually. When fully stopped, shift to the park- ing position “P”. Dismount on uphill side or to a side if pointed straight uphill.
Page 105: Riding Downhill
RIDING DOWNHILL When this ATV is in 4WD or 4WD-LOCK, all When riding your ATV downhill, shift your wheels (front and rear) are interconnected by weight as far to the rear and uphill side of the the drive train. This means that applying either ATV as possible.
Page 106 WARNING POTENTIAL HAZARD Going down a hill improperly. WHAT CAN HAPPEN Could cause loss of control or cause the ATV to overturn. Always follow proper procedures for go- ing down hills as described in this Own- er’s Manual. Note: a special technique is required when braking as you go down a hill.
Page 107: Crossing A Slope
CROSSING A SLOPE WARNING Traversing a sloping surface on your ATV re- POTENTIAL HAZARD quires you to properly position your weight to Improperly crossing hills or turning on maintain proper balance. Be sure that you hills. have learned the basic riding skills on flat WHAT CAN HAPPEN ground before attempting to cross a sloping Could cause loss of control or cause the...
Page 108 7-33...
Page 109: Crossing Through Shallow Water
CROSSING THROUGH SHALLOW WATER Remember that wet brakes may have re- The ATV can be used to cross slow moving, duced stopping ability. Test your brakes shallow water of up to a maximum of 35 cm after leaving water. If necessary, apply (14 inches) in depth.
Page 110 Test your brakes after leaving the water. Do CAUTION: not continue to ride your ATV without verifying After riding your ATV in water, be sure to that you have regained proper braking ability. drain the trapped water by removing the check hose at the bottom of the air filter case and the check hose on the V-belt cooling duct.
Page 111 1. V-belt cooling duct check hose (Left side) 1. Drive select lever box check hose 1. V-belt case drain plug 7-36...
Page 112: Riding Over Rough Terrain
RIDING OVER ROUGH TERRAIN WARNING Riding over rough terrain should be done with POTENTIAL HAZARD caution. Look out for obstacles which could Improperly operating over obstacles. cause damage to the ATV or could lead to an WHAT CAN HAPPEN upset or accident. Be sure to keep your feet Could cause loss of control or a colli- firmly mounted on the footboards at all times.
Page 113: Sliding And Skidding
SLIDING AND SKIDDING If the rear wheels of your ATV start to slide Care should be used when riding on loose or sideways, control can usually be regained (if slippery surfaces since the ATV may slide. If there is room to do so) by steering in the direc- unexpected and uncorrected, sliding could tion of the slide.
Page 114 With practice, over a period of time, skill at WARNING controlled sliding can be developed. The ter- POTENTIAL HAZARD rain should be chosen carefully before at- Skidding or sliding improperly. tempting such maneuvers, since both stability WHAT CAN HAPPEN and control are reduced. Bear in mind that You may lose control of this ATV.
Page 115: What To Do If
WHAT TO DO IF ... If your ATV starts to slide sideways: Steer This section is designed to be a reference in the direction of the slide if you have the guide only. Be sure to read each section on room.
Page 116 If your ATV is traversing a sloping surface: Be sure to ride with your weight positioned towards the uphill side of the ATV to main- tain proper balance. If the ATV starts to tip, steer down the hill (if there are no obstacles in your way) to regain balance.
Page 117: Periodic Maintenance And Adjustment
EBU00515 PERIODIC MAINTENANCE AND Have a Yamaha dealer perform service if ADJUSTMENT you are not familiar with machine service. Periodic inspection, adjustment and lubrica- tion will keep your machine in the safest and EBU00562 most efficient condition possible. Safety is an Owner’s manual and tool kit...
Page 118 HOW TO AVOID THE HAZARD during a service operation requiring one, take Never modify this ATV through improp- your machine to a Yamaha dealer to check er installation or use of accessories. All the torque settings and adjust them as neces- parts and accessories added to this ve- sary.
Page 119: Periodic Maintenance/Lubrication
EBU00261 PERIODIC MAINTENANCE/LUBRICATION INITIAL EVERY Whichever mile 1,500 1,500 3,000 ITEM ROUTINE comes first (km) (320) (1,200) (2,400) (2,400) (4,800) hours • Check valve clearance. Valves* • Adjust if necessary. • Check coolant leakage. Cooling system • Repair if necessary. •...
Page 120 • Check for cracks or damage. • Check all chassis fittings and fasteners. Fittings and Fasteners* • Correct if necessary. * It is recommended that these items be serviced by a Yamaha dealer. ** Lithium-soap-based grease NOTE: • Recommended brake fluid: DOT 4 •...
Page 121: Panel Removal And Installation
EBU00614 Panel removal and installation The panels illustrated need to be removed to perform some of the maintenance described in this chapter. Refer to this section each time a panel has to be removed or reinstalled. 4. Panel D 5. Panel E 6.
Page 122 EBU00879 Panels A and D To remove 1. Remove the seat. (See page 4-20 for seat removal and installation proce- dures.) 2. Pull outward on the area shown, and then pull upward as shown. 1. Panel D 1. Panel A...
Page 123 To install 1. Insert the panel projections in the numer- ical order shown in the illustration, and then push inward on the area shown. 2. Install the seat. 1. Panel D 1. Panel A...
Page 124 EBU00962 Panel B CAUTION: To remove When installing the panel, be sure not to Remove the bolts. pinch the cables or wires. To install Place the panel in the original position and in- stall the bolts. 1. Panel B 2. Bolt (× 2)
Page 125 EBU00873 Panel C To remove 1. Remove the front carrier by removing its stay covers at the rear, then by removing the bolts. 2. Remove the quick fasteners and pull the panel upward. 1. Bolt (× 2) 1. Front carrier stay cover (× 2) 1.
Page 126 To install 1. Place the panel in the original position and install the quick fasteners. 2. Install the front carrier by installing its bolts and tightening them to the specified torques, and then by installing the stay covers. Tightening torques: Carrier bolt: 1.
Page 127 EBU00616 EBU00638 Panel E Panel F To remove To remove Remove the bolts. Pull outward on the areas shown. To install Place the panel in the original position and install the bolts. 1. Panel F 1. Panel E 2. Bolt (× 6) 8-11...
Page 128: Engine Oil
EBU00847 To install Engine oil Oil level inspection Place the panel in its original position. 1. Remove panel F. (See page 8-11 for panel removal and installation proce- dures.) 2. Place the ATV on a level place and warm up the engine for several minutes. 3.
Page 129 Engine oil and oil filter cartridge replace- NOTE: Wait a few minutes until the oil level settles ment before checking. 1. Remove panels E and F. (See page 8-11 for panel removal and installation proce- 5. The oil level should be between the max- dures.) imum and minimum marks.
Page 130 5. Remove the oil filter by using an oil filter NOTE: An oil filter wrench is available at a nearby wrench. Yamaha dealer. 6. Install the drain bolt and tighten it to the specified torque. Tightening torque: Drain bolt: 30 Nm (3.0 m.kgf, 22 ft.lb) 1.
Page 131 9. Fill the engine with sufficient oil to reach the specified level. Install the dipstick and tighten it. Recommended oil: See page 10-2. Oil quantity: Total amount: 2.2 L (1.94 Imp qt, 2.33 US qt) Periodic oil change: 1. Torque wrench 1.9 L (1.67 Imp qt, 2.01 US qt) 7.
Page 132: Final Gear Oil
The final gear case must be checked for oil leakage before each ride. If any leakage is 1. Final gear oil drain bolt found, have a Yamaha dealer check and re- 1. Place the machine on a level place. pair the ATV.
Page 133 4. Install the drain bolt and tighten it to the CAUTION: specified torque. Be sure no foreign material enters the final gear case. Tightening torque: Drain bolt (final gear case): 6. Install the filler bolt and tighten to the 23 Nm (2.3 m·kgf, 16 ft·lb) specified torque.
Page 134: Differential Gear Oil
EBU00706* Differential gear oil 3. Install the oil filler bolt and tighten it to the Differential gear oil measurement specified torque. 1. Place the machine on a level place. Tightening torque: 2. Remove the oil filler bolt and check the oil Oil filler bolt: level.
Page 135 4. Install the drain bolt and tighten it to the CAUTION: specified torque. Be sure no foreign material enters the dif- ferential gear case. Tightening torque: Drain bolt: 6. Install the filler bolt and tighten it to the 10 Nm (1.0 m·kgf, 7 ft·lb) specified torque.
Page 136: Cooling System
EBU00771 Cooling system 3. Remove the coolant reservoir cap, and 1. Check the coolant level in the coolant then add coolant or distilled water to raise reservoir when the engine is cold as the it to the specified level. coolant level will vary with engine tem- 4.
Page 137 EBU00887 Changing the coolant NOTE: If water is added, have a Yamaha dealer WARNING check the antifreeze content of the cool- POTENTIAL HAZARD ant as soon as possible. Removing the radiator cap when the en- The radiator fan operation is completely gine and radiator are still hot.
Page 138 1. Place the ATV on a level surface. 2. Remove panels E and F. (See page 8-11 for panel removal and installation proce- dures.) 3. Place a container under the engine, and then remove the coolant drain bolt. (Use a trough or a similar object as shown to prevent coolant from spilling on the foot- rest.) 1.
Page 139 1. Radiator cap 1. Coolant reservoir drain hose 5. Remove the radiator cap. 8. After draining the coolant, thoroughly 6. Remove the coolant reservoir cap. flush the cooling system with clean tap 7. Disconnect the hose on the coolant res- water.
Page 140 Total amount: NOTE: 1.8 L (1.58 Imp qt, 1.90 US qt) If any leakage is found, have a Yamaha deal- Coolant reservoir capacity er check the cooling system. (up to the maximum level mark): 0.3 L (0.26 Imp qt, 0.32 US qt) 16.
Page 141: Axle Boots
EBU00862 Axle boots Check the protective boots for holes or tears. If any damage is found, have them replaced by a Yamaha dealer. 1. Rear axle boot (× 2 each side) 1. Front axle boot (× 2 each side) 8-25...
Page 142: Spark Plug Inspection
EBU00864 Spark plug inspection Removal 1. Remove panel A. (See pages 8-6 ~ 8-7 for panel removal and installation proce- dures.) 2. Remove the spark plug cap. 1. Spark plug wrench 1. Spark plug cap 3. Use the spark plug wrench in the tool kit to remove the spark plug as shown.
Page 143 ATV that is being ridden normally. Do not attempt to diagnose such problems yourself. Instead, take the ATV to a Yamaha dealer. You should periodically re- move and inspect the spark plug because heat and deposits will cause the spark plug to slowly break down and erode.
Page 144 Tightening torque: Spark plug: 17.5 Nm (1.75 m·kgf, 12.5 ft·lb) NOTE: If a torque wrench is not available when you are installing a spark plug, a good estimate of the correct torque is 1/4 to 1/2 turn past finger tight. Have the spark plug tightened to the specified torque as soon as possible.
Page 145: Air Filter Element Cleaning
EBU00792 Air filter element cleaning NOTE: There is a check hose at the bottom of the air filter case. If dust or water collects in this hose, empty the hose and clean the air filter element and air filter case. 1.
Page 146 WARNING POTENTIAL HAZARD Using low flash point solvents or gaso- line to clean the air filter element. WHAT CAN HAPPEN Low flash point solvents or gasoline can catch fire or explode. HOW TO AVOID THE HAZARD Use parts cleaning solvent to clean the 1.
Page 147 7. Apply Yamaha foam air filter oil or other NOTE: The air filter element should be cleaned every quality foam air filter oil to the element. If 20 ~ 40 hours. It should be cleaned and lubri- foam air filter oil is not available, motor oil cated more often if the machine is operated in may be used.
Page 148: Spark Arrester Cleaning
EBU00455 Spark arrester cleaning Be sure the exhaust pipe and muffler are cool before cleaning the spark arrester. 1. Remove the bolt. 2. Remove the tailpipe by pulling it out of the muffler. 3. Tap the tailpipe lightly, then use a wire brush to remove any carbon deposits from the spark arrester portion of the tailpipe.
Page 149 EBU00874* V-belt cooling duct check hose WARNING If dust or water collects in the V-belt cooling POTENTIAL HAZARD duct check hose, remove the hose and clean Improper cleaning of the spark arrester. Hot exhaust system WHAT CAN HAPPEN Could injure the eyes. Could cause burns.
Page 150: Carburetor Adjustment
V-belt case, remove this plug to requires very sophisticated adjustment. Most drain the water from the case. adjusting should be left to a Yamaha dealer who has the professional knowledge and ex- NOTE: perience to do so. However, the idling speed...
Page 151: Idle Speed Adjustment
To prevent this, the valve clear- crease engine speed. ance must be adjusted regularly. This adjust- ment however, should be left to a professional Specified idle speed: Yamaha service technician. 1,450 ~ 1,550 r/min 8-35...
Page 152: Throttle Lever Adjustment
NOTE: If the thickness is less than the specified val- Adjust the engine idling speed before adjust- ue, have a Yamaha dealer replace the pads. ing the throttle lever free play. 1. Loosen the locknut. 2. Turn the adjusting bolt until the throttle le- ver free play is 3 ~ 5 mm (0.12 ~ 0.20 in).
Page 153: Rear Brake Pad Inspection
Insufficient brake fluid may let air enter the If the thickness is less than the specified val- brake system, possibly causing the brakes to ue, have a Yamaha dealer replace the pads. become ineffective. Before riding, check that the brake fluid is above the lower level and replenish when necessary.
Page 154 Observe these precautions: FRONT 1. When checking the fluid level, make sure the top of the master cylinder reservoir is level by turning the handlebars. 2. Use only the designated quality brake flu- id. Otherwise, the rubber seals may dete- riorate, causing leakage and poor brake performance.
Page 155: Brake Fluid Replacement
The front brake lever should have a free play spilled fluid immediately. of zero mm (zero in) at the lever end. If not, 6. Have a Yamaha dealer check the cause ask a Yamaha dealer to adjust it. if the brake fluid level goes down.
Page 156: Rear Brake Lever And Pedal Adjustment
Make sure the brakes are not spongy. All air must be bled from 1. Locknut 2. Adjusting bolt c. Free play the brake system. Replacement of brake components re- quires professional knowledge. These procedures should be performed by a Yamaha dealer. 8-40...
Page 157 Yamaha dealer to make that adjustment. tioned 45 mm (1.77 in) above the top of the NOTE: footrest. If not, ask a Yamaha dealer to adjust When adjusting the rear brake lever free play: Be sure not to step on the brake pedal.
Page 158: Adjusting The Rear Brake Light Switch
Make sure the brakes do not drag. All air must be bled from the brake system. Replacement of brake components re- quires professional knowledge. These procedures should be performed by a Yamaha dealer. 1. Rear brake light switch 2. Adjusting nut 8-42...
Page 159: Cable Inspection And Lubrication
Inspect cables frequently. Replace dam- aged cables. Lubricate the inner cables and the cable ends. If the cables do not operate smoothly, ask a Yamaha dealer to replace them. Recommended lubricant: Yamaha chain and cable lube or SAE 10W30 motor oil 8-43...
Page 160: Rear Wheel Upper And Lower Knuckle Lubrication
EBU00877 Rear wheel upper and lower knuckle lubrication Lubricate the upper and lower wheel knuck- les. 1. Upper knuckle 2. Lower knuckle Recommended lubricant: Lithium-soap-based grease 8-44...
Page 161: Wheel Removal
EBU00373 EBU00828* Wheel removal Wheel installation 1. Elevate the wheel by placing a suitable When installing a wheel, reverse the removal stand under the frame. procedure. 2. Remove the nuts from the wheel. NOTE: 3. Remove the wheel assembly. The arrow mark on the tire must point to- ward the rotating direction of the wheel.
Page 162 1. Tapered wheel nuts are used for both front and rear wheels. Install the nut with its tapered side towards the wheel. 1. Tapered nut 2. Tighten the wheel nuts to the specified torque. Wheel nut torque: Front: 55 Nm (5.5 m·kgf, 40 ft·lb) Rear: 55 Nm (5.5 m·kgf, 40 ft·lb) 8-46...
Page 163: Battery
Keep out of reach of chil- tery. If the battery seems to have discharged, dren. consult a Yamaha dealer. Antidote: EXTERNAL: Flush with water. CAUTION: INTERNAL: Drink large quantities of wa- Do not try to remove the sealing caps of ter or milk.
Page 164: Battery Maintenance
EBU00385 Battery maintenance 1. When the machine is not used for a month or longer, remove the battery and store it in a cool, dark place. Completely recharge the battery before reinstallation. CAUTION: A special battery charger (constant volt- age/ampere or constant voltage) is re- quired recharging sealed-type...
Page 165: Fuse Replacement
2. If a fuse is blown, turn off the main switch and install a new fuse of the specified amperage. Then turn on the switches. If the fuse immediately blows again, con- sult a Yamaha dealer. 1. Main fuse 2. Spare fuse 3. Headlight fuse 4.
Page 166 WARNING POTENTIAL HAZARD Using an improper fuse. WHAT CAN HAPPEN An improper fuse can cause damage to the electrical system which could lead to a fire. HOW TO AVOID THE HAZARD Always use a fuse of the specified rat- ing. Never use a material in place of the proper fuse.
Page 167: Replacing The Headlight Bulb
EBU00961 Replacing the headlight bulb If the headlight bulb burns out, replace it as follows: 1. Remove the cover at the rear of the headlight. 1. Bulb holder cover 3. Remove the bulb holder by turning it counterclockwise. 1. Cover 2.
Page 168: Headlight Beam Adjustment
4. Remove the defective bulb by pushing it Headlight beam adjustment in and turning it counter clockwise. CAUTION: WARNING It is advisable to have a Yamaha dealer POTENTIAL HAZARD make this adjustment. The headlight bulb is hot when it is on 1. Vertical adjustment: and immediately after it is turned off.
Page 169: Tail/Brake Light Bulb Replacement
EBU00861 Tail/brake light bulb replacement 1. Remove the bulb holder (together with the bulb) by turning it counterclockwise. 1. Bulb holder 2. Bulb 3. Install a new bulb in the bulb holder by pushing it inward and turning it clockwise. 4.
Page 170: Troubleshooting
EBU00412 Troubleshooting WARNING Although Yamaha machines receive a rigid in- POTENTIAL HAZARD spection before shipment from the factory, Checking the fuel system while smok- trouble may occur during operation. Any prob- ing or near an open flame. lem in the fuel, compression, or ignition sys-...
Page 171: Troubleshooting Charts
No fuel. 2. Compression There is compression. Compression normal. Use the electric starter to see if there is compression. Ask a Yamaha dealer to No compression. inspect. 3. Ignition Wipe clean with dry cloth. Ignition system is Spark is good.
Page 172 Restart the engine. If the engine overheats again, ask a Level is OK. Yamaha dealer to inspect and/or repair the cooling system. NOTE: If it is difficult to get the recommended coolant, tap water can be temporarily used, provided that it is changed to the recommended coolant as soon as possible.
Page 173: Cleaning And Storage
EBU00419 CLEANING AND STORAGE CAUTION: ¯ Excessive water pressure may cause wa- A. CLEANING ter seepage and deterioration of wheel Frequent, thorough cleaning of your machine bearings, brakes, transmission seals and will not only enhance its appearance but will electrical devices. Many expensive repair improve its general performance and extend bills have resulted from improper high the useful life of many components.
Page 174 6. Clean the seat with a vinyl upholstery WARNING cleaner to keep the cover pliable and POTENTIAL HAZARD glossy. Operation with wet brakes after wash- 7. Automotive type wax may be applied to ing. all painted and chrome plated surfaces. WHAT CAN HAPPEN Avoid combination cleaner-waxes.
Page 175: Storage
Do not apply oil to fuel) any rubber parts or the seat cover. NOTE: Use of fuel stabilizer and conditioner elimi- nates the need to drain the fuel system. Con- sult a Yamaha dealer if the fuel system needs to be drained instead.
Page 176 7. Remove the battery and charge it. Store it in a dry place and recharge it once a month. Do not store the battery in an ex- cessively 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.
Page 177: Specifications
EBU00428 SPECIFICATIONS Model YFM660FP Dimensions: Overall length 2,085 mm (82.1 in) Overall width 1,150 mm (45.3 in) Overall height 1,210 mm (47.6 in) Seat height 880 mm (34.6 in) Wheelbase 1,275 mm (50.2 in) Minimum ground clearance 275 mm (10.8 in) Minimum turning radius 3,200 mm (126.0 in) Basic weight:...
Page 178 Model YFM660FP Engine oil: 0° 10° 30° 50° 70° 90° 110° 130°F Type YAMALUBE 4 (20W40) or SAE 20W40 YAMALUBE 4 (10W30) or SAE 10W30 SAE 5W30 -20° -10° 0° 10° 20° 30° 40° 50°C Recommended engine oil classification API Service SE, SF, SG type or higher CAUTION: Be sure to use motor oils that do not contain anti- friction modifiers.
Page 179 Model YFM660FP Final gear case oil: Type SAE80 API “GL-4” Hypoid gear oil Quantity: Periodic oil change 0.25 L (0.22 Imp qt, 0.26 US qt) Total amount 0.30 L (0.26 Imp qt, 0.32 US qt) Differential gear case oil: Type SAE80 API “GL-4”...
Page 180 Model YFM660FP Spark plug: Type/manufacturer DPR8EA-9 / NGK Spark plug gap 0.8 ~ 0.9 mm (0.031 ~ 0.035 in) Clutch type Wet, centrifugal automatic Transmission: Primary reduction system V-belt Secondary reduction system Shaft drive 39/24 × 24/18 × 33/9 (7.944) Secondary reduction ratio Transmission type V-belt automatic...
Page 181 Model YFM660FP Brake: Front brake type Dual disc brake operation Right hand operation Rear brake type Single disc brake operation Left hand and right foot operation Suspension: Front suspension Double wishbone Rear suspension Double wishbone Shock absorber: Front shock absorber Coil spring / oil damper Rear shock absorber Coil spring / oil damper...
Page 182 Model YFM660FP Bulb voltage, wattage × quantity: 12 V, 30 W / 30 W × 2 Headlight 12 V, 21 W / 5 W × 1 Brake/tail light Indicator light: LED × 1 Neutral indicator light LED × 1 Reverse indicator light LED ×...
Page 183: Noise Regulation
EBU00430 N OISE REGULATION TAMPERING WITH NOISE CONTROL SYSTEM PROHIBITED: Federal law prohibits the following acts or the causing thereof: (1) The removal or rendering inop- erative by any person other than for purposes of maintenance, repair, or replacement of any de- vice or element of design incorporated into any new vehicle 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.
Page 184: Maintenance Record
EBU00431* MAINTENANCE RECORD Copies of work orders and/or receipts for parts you purchase and install will be required to docu- ment maintenance done in accordance with the warranty. The chart below is printed only as a re- minder to you that the maintenance work is required. It is not acceptable proof of maintenance work.
Page 185: Atv Limited Warranty
EBU00432 YAMAHA MOTOR CORPORATION, U.S.A. ATV LIMITED WARRANTY 13-1...
Page 186 13-2...
Page 187: Yamaha Extended Service (Y.e.s.)
EBU00435 YAMAHA EXTENDED SERVICE (Y.E.S.) 14-1...
Page 188 EBU00436 WARNING Indicates a potential hazard that could result in serious injury or death. 14-2...
Page 189 EBU00437...
Page 190 LOCATE AND READ OWNER'S MANUAL. FOLLOW ALL INSTRUCTIONS AND WARNINGS. (For replacement manual, call 1-800-532-1558) YAMAHA MOTOR CO., LTD. PRINTED ON RECYCLED PAPER PRINTED IN JAPAN 2001 · 4 - 9.0 × 2 CR...

Yamaha GRIZZLY Ultramatic YFM660FP Owner's Manual

Warning

1 Location of the Warning and Specification Labels

2 Safety Information

3 Description and Machine Identification

6 Operation

8 Periodic Maintenance and Adjustment

9 Cleaning and Storage

10 Specifications

11 Noise Regulation

12 Maintenance Record

13 Atv Limited Warranty

14 Yamaha Extended Service (Y.e.s.)

Quick Links

Troubleshooting

Related Manuals for Yamaha GRIZZLY Ultramatic YFM660FP

Summary of Contents for Yamaha GRIZZLY Ultramatic YFM660FP

Table of Contents