Owners Manual
Page 6
... Key identification number...3-2 Vehicle identification number ...3-3 Model label ...3-3 2 3 CONTROL FUNCTIONS...4-1 Main switch ...4-1 Indicator and warning lights ...4-2 Speedometer unit ...4-4 Handlebar switches ...4-6 Throttle lever ...4-13 Speed limiter ...4-14 Front brake lever...4-15 Brake pedal and rear brake lever ...4-15 Drive select lever ...4-16 Recoil starter...4-16 Fuel tank cap ...4-17 Fuel cock...4-18 Starter (choke) ...4-19 Seat...4-20 Storage compartment ...4-21 Front carrier ...4-21 Rear carrier ...4-21 Front and rear shock absorber adjustment ...4-22 Auxiliary DC jack...
... Key identification number...3-2 Vehicle identification number ...3-3 Model label ...3-3 2 3 CONTROL FUNCTIONS...4-1 Main switch ...4-1 Indicator and warning lights ...4-2 Speedometer unit ...4-4 Handlebar switches ...4-6 Throttle lever ...4-13 Speed limiter ...4-14 Front brake lever...4-15 Brake pedal and rear brake lever ...4-15 Drive select lever ...4-16 Recoil starter...4-16 Fuel tank cap ...4-17 Fuel cock...4-18 Starter (choke) ...4-19 Seat...4-20 Storage compartment ...4-21 Front carrier ...4-21 Rear carrier ...4-21 Front and rear shock absorber adjustment ...4-22 Auxiliary DC jack...
Owners Manual
Page 7
5 PRE-OPERATION CHECKS ...5-1 Front and rear brakes ...5-3 Fuel ...5-5 Engine oil ...5-7 Final gear oil...5-7 Differential gear oil ...5-8 Coolant...5-9 Throttle lever ...5-10 Fittings and fasteners...5-10 Lights...5-10 Switches...5-10 Tires ...5-11 How to measure tire pressure...5-13 Tire wear limit...5-14 OPERATION...6-1 Starting a cold engine ...6-1 Starting a warm engine...6-3 Warming up...6-3 Drive select lever operation and reverse driving...6-4 Engine break-in...6-7 Parking ...6-8 Parking on a slope...6-9 Accessories and loading ...6-10 7 RIDING YOUR ATV ...7-1 Getting to know your ...
5 PRE-OPERATION CHECKS ...5-1 Front and rear brakes ...5-3 Fuel ...5-5 Engine oil ...5-7 Final gear oil...5-7 Differential gear oil ...5-8 Coolant...5-9 Throttle lever ...5-10 Fittings and fasteners...5-10 Lights...5-10 Switches...5-10 Tires ...5-11 How to measure tire pressure...5-13 Tire wear limit...5-14 OPERATION...6-1 Starting a cold engine ...6-1 Starting a warm engine...6-3 Warming up...6-3 Drive select lever operation and reverse driving...6-4 Engine break-in...6-7 Parking ...6-8 Parking on a slope...6-9 Accessories and loading ...6-10 7 RIDING YOUR ATV ...7-1 Getting to know your ...
Owners Manual
Page 8
... Final gear oil ...8-21 Differential gear oil...8-23 Cooling system...8-25 Changing the coolant ...8-27 Axle boots...8-31 Spark plug inspection...8-32 Air filter element cleaning...8-34 Spark arrester cleaning ...8-38 V-belt cooling duct check hose ...8-39 V-belt case drain plug...8-40 Carburetor adjustment...8-40 Idle speed adjustment ...8-41 Valve clearance adjustment ...8-41 Select lever safety system cable adjustment ...8-42 Throttle lever adjustment ...8-42 Front brake pad check ...8-43 Checking the rear brake pads ...8-43 Checking the brake fluid level...8-44 Brake fluid replacement...
... Final gear oil ...8-21 Differential gear oil...8-23 Cooling system...8-25 Changing the coolant ...8-27 Axle boots...8-31 Spark plug inspection...8-32 Air filter element cleaning...8-34 Spark arrester cleaning ...8-38 V-belt cooling duct check hose ...8-39 V-belt case drain plug...8-40 Carburetor adjustment...8-40 Idle speed adjustment ...8-41 Valve clearance adjustment ...8-41 Select lever safety system cable adjustment ...8-42 Throttle lever adjustment ...8-42 Front brake pad check ...8-43 Checking the rear brake pads ...8-43 Checking the brake fluid level...8-44 Brake fluid replacement...
Owners Manual
Page 9
Cleaning...9-1 B. Headlight beam adjustment ...8-60 Tail/brake light bulb replacement ...8-61 Troubleshooting ...8-62 Troubleshooting charts ...8-63 9 CLEANING AND STORAGE...9-1 A. 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 10 11 12 13 14
Cleaning...9-1 B. Headlight beam adjustment ...8-60 Tail/brake light bulb replacement ...8-61 Troubleshooting ...8-62 Troubleshooting charts ...8-63 9 CLEANING AND STORAGE...9-1 A. 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 10 11 12 13 14
Owners Manual
Page 20
... shock absorber spring preload adjusting ring 7. Fuel cock 14. Brake pedal 9. Radiator cap 11. Fuel tank cap 13. Fuses Engine oil dipstick Recoil starter Coolant reservoir Drive select lever box check hose V-belt cooling duct check hose Rear brake lever Left handlebar switches Starter (choke) Speedometer unit Main switch Right handlebar switches Throttle lever Front brake lever Auxiliary DC jack NOTE: The machine you have purchased may differ slightly from those shown in the figures of this manual. 3-1 Air filter case 5. Battery...
... shock absorber spring preload adjusting ring 7. Fuel cock 14. Brake pedal 9. Radiator cap 11. Fuel tank cap 13. Fuses Engine oil dipstick Recoil starter Coolant reservoir Drive select lever box check hose V-belt cooling duct check hose Rear brake lever Left handlebar switches Starter (choke) Speedometer unit Main switch Right handlebar switches Throttle lever Front brake lever Auxiliary DC jack NOTE: The machine you have purchased may differ slightly from those shown in the figures of this manual. 3-1 Air filter case 5. Battery...
Owners Manual
Page 24
... EBU01122 Low-range indicator light "L" This indicator light comes on when the drive select lever is set to the "4WD-LOCK" position. Differential gear lock indicator light "DIFF. LOCK" Low-range indicator light "L" High-range indicator light "H" Neutral indicator light "N" Reverse indicator light "R" Park indicator light "P" Four-wheel-drive indicator " "/" " Coolant temperature warning light " " DIFF. EBU00802 EBU10601 Indicator and warning lights Differential gear lock indicator light "DIFF. LOCK" This indicator light and the differential gear lock indicator in the display come on...
... EBU01122 Low-range indicator light "L" This indicator light comes on when the drive select lever is set to the "4WD-LOCK" position. Differential gear lock indicator light "DIFF. LOCK" Low-range indicator light "L" High-range indicator light "H" Neutral indicator light "N" Reverse indicator light "R" Park indicator light "P" Four-wheel-drive indicator " "/" " Coolant temperature warning light " " DIFF. EBU00802 EBU10601 Indicator and warning lights Differential gear lock indicator light "DIFF. LOCK" This indicator light and the differential gear lock indicator in the display come on...
Owners Manual
Page 25
... "4WD-LOCK" position. NOTE: If the indicator light flashes or the speedometer does not show the speed while riding, have a Yamaha dealer check the speed sensor circuit. _ Four-wheel-drive indicator " "/" " This indicator comes on when the "2WD"/ "4WD" switch is set to the synchronizing mechanism in the differential gear case, the four-wheel drive indicator may not come on until the ATV starts moving. _ _ EBU00609 Park...
... "4WD-LOCK" position. NOTE: If the indicator light flashes or the speedometer does not show the speed while riding, have a Yamaha dealer check the speed sensor circuit. _ Four-wheel-drive indicator " "/" " This indicator comes on when the "2WD"/ "4WD" switch is set to the synchronizing mechanism in the differential gear case, the four-wheel drive indicator may not come on until the ATV starts moving. _ _ EBU00609 Park...
Owners Manual
Page 29
... run when the engine stop switch " / " Make sure that the starter motor will not operate properly. If this switch is set to " " before starting the engine. (See pages 6-1-6-3 for more than thirty minutes. EBU00607 Start switch " " The starter motor cranks the engine when this should happen, remove the battery and recharge it. _ Engine stop switch is set to " ". The engine stop switch controls ignition and can be used at all times...
... run when the engine stop switch " / " Make sure that the starter motor will not operate properly. If this switch is set to " " before starting the engine. (See pages 6-1-6-3 for more than thirty minutes. EBU00607 Start switch " " The starter motor cranks the engine when this should happen, remove the battery and recharge it. _ Engine stop switch is set to " ". The engine stop switch controls ignition and can be used at all times...
Owners Manual
Page 35
... be sure it difficult to speed up or slow down when you start the engine. Regulate the speed of throttle. Correct the problem before you need to be hard to operate, making it is running, movement of the throttle lever will return to the idle position as soon as the lever is removed from the throttle lever. WARNING POTENTIAL HAZARD Malfunction of...
... be sure it difficult to speed up or slow down when you start the engine. Regulate the speed of throttle. Correct the problem before you need to be hard to operate, making it is running, movement of the throttle lever will return to the idle position as soon as the lever is removed from the throttle lever. WARNING POTENTIAL HAZARD Malfunction of...
Owners Manual
Page 51
WHAT CAN HAPPEN You could lose braking ability, which could lead to an accident. WARNING POTENTIAL HAZARD Riding with the brakes. HOW TO AVOID THE HAZARD Always check the brakes at the start of every ride. Do not ride the ATV if you find any problem with improperly operating brakes. If a problem cannot be corrected by the adjustment procedures provided in this manual, have a Yamaha dealer check for the cause. 5-4
WHAT CAN HAPPEN You could lose braking ability, which could lead to an accident. WARNING POTENTIAL HAZARD Riding with the brakes. HOW TO AVOID THE HAZARD Always check the brakes at the start of every ride. Do not ride the ATV if you find any problem with improperly operating brakes. If a problem cannot be corrected by the adjustment procedures provided in this manual, have a Yamaha dealer check for the cause. 5-4
Owners Manual
Page 62
... or collision. HOW TO AVOID THE HAZARD When riding in cold weather. Turn the main switch to "ON" and the engine stop switch to "ON". 3. HOW TO AVOID THE HAZARD Read the Owner's Manual carefully. Turn the fuel cock to " ". 4. Starting a cold engine WARNING POTENTIAL HAZARD Freezing control cables in cold weather, always make sure all controls. Shift the drive select lever into the neutral or park position.
... or collision. HOW TO AVOID THE HAZARD When riding in cold weather. Turn the main switch to "ON" and the engine stop switch to "ON". 3. HOW TO AVOID THE HAZARD Read the Owner's Manual carefully. Turn the fuel cock to " ". 4. Starting a cold engine WARNING POTENTIAL HAZARD Freezing control cables in cold weather, always make sure all controls. Shift the drive select lever into the neutral or park position.
Owners Manual
Page 63
... throttle lever and start the engine by pushing the start position. 1 2 3 4 5 6 7 8 9 10 5. G The engine can be started in any gear if the rear brake lever is recommended to shift into neutral or park before starting the engine. _ _ Position 3 : Cold engine startambient temperature above 25 °C (80 °F) and warm engine start switch. 6-2 Position 2 : Cold engine startambient temperature at 0 °C (30 °F)-30 °C (90 °F) and warming up position. Starter...
... throttle lever and start the engine by pushing the start position. 1 2 3 4 5 6 7 8 9 10 5. G The engine can be started in any gear if the rear brake lever is recommended to shift into neutral or park before starting the engine. _ _ Position 3 : Cold engine startambient temperature above 25 °C (80 °F) and warm engine start switch. 6-2 Position 2 : Cold engine startambient temperature at 0 °C (30 °F)-30 °C (90 °F) and warming up position. Starter...
Owners Manual
Page 66
... to reverse or from reverse or park without applying the rear brake. _ _ 1. Check behind for people or obstacles, and then release the brake pedal. 6-5 Drive select lever NOTE: G When in the engine, the light may not come on, ask a Yamaha dealer to inspect the electrical circuit. Shifting: Neutral to Reverse and Reverse to Park NOTE: The drive select lever cannot be on...
... to reverse or from reverse or park without applying the rear brake. _ _ 1. Check behind for people or obstacles, and then release the brake pedal. 6-5 Drive select lever NOTE: G When in the engine, the light may not come on, ask a Yamaha dealer to inspect the electrical circuit. Shifting: Neutral to Reverse and Reverse to Park NOTE: The drive select lever cannot be on...
Owners Manual
Page 94
...for off-road use of the brakes can cause the tires to lose traction, reducing control and increasing the possibility of an accident. With the engine idling, shift the drive select lever to a complete stop. Avoid higher speeds until you...control. Make sure that the engine and exhaust pipe will start the engine. Damage to the engine or drive train may lift off the ground resulting in contact with the operation of the throttle, brakes, shifting procedures, and turning techniques in this area is applied too abruptly, the front wheels may occur. _ 7-21 Shift to the parking...
...for off-road use of the brakes can cause the tires to lose traction, reducing control and increasing the possibility of an accident. With the engine idling, shift the drive select lever to a complete stop. Avoid higher speeds until you...control. Make sure that the engine and exhaust pipe will start the engine. Damage to the engine or drive train may lift off the ground resulting in contact with the operation of the throttle, brakes, shifting procedures, and turning techniques in this area is applied too abruptly, the front wheels may occur. _ 7-21 Shift to the parking...
Owners Manual
Page 143
... reservoir cap and panel D. 13. Replace the coolant drain bolt washer if it is damaged, install the coolant drain bolt, and then tighten it is full, and then install the radiator cap. Install the coolant reservoir hose. 12. Pour the recommended coolant into the reservoir to the specified torque. Antifreeze and water mixing ratio: 1:1 Total amount: 1.8 L (1.58 Imp qt, 1.90 US qt) Coolant reservoir capacity...
... reservoir cap and panel D. 13. Replace the coolant drain bolt washer if it is damaged, install the coolant drain bolt, and then tighten it is full, and then install the radiator cap. Install the coolant reservoir hose. 12. Pour the recommended coolant into the reservoir to the specified torque. Antifreeze and water mixing ratio: 1:1 Total amount: 1.8 L (1.58 Imp qt, 1.90 US qt) Coolant reservoir capacity...
Owners Manual
Page 164
... while holding the rear brake light switch in direction a. Rear brake light switch 2. Install the panel. 8-50 Remove panel B. (See page 8-9 for panel removal and installation procedures.) 2. To make the brake light come on earlier, turn the adjusting nut in direction b. 1. EBU12590 Adjusting the rear brake light switch The rear brake light switch, which is activated by the brake pedal and rear brake lever, is properly adjusted when the brake light comes on later, turn the adjusting nut...
... while holding the rear brake light switch in direction a. Rear brake light switch 2. Install the panel. 8-50 Remove panel B. (See page 8-9 for panel removal and installation procedures.) 2. To make the brake light come on earlier, turn the adjusting nut in direction b. 1. EBU12590 Adjusting the rear brake light switch The rear brake light switch, which is activated by the brake pedal and rear brake lever, is properly adjusted when the brake light comes on later, turn the adjusting nut...
Owners Manual
Page 165
... cables do not operate smoothly, ask a Yamaha dealer to replace them. Recommended lubricant: Yamaha chain and cable lube or SAE 10W30 motor oil 8-51 Lubricating the brake levers and brake pedal Lubricate the pivoting parts. Replace damaged cables. Lubricate the inner cables and the cable ends. Cables can result when the outer covering of controls could be restricted, which could cause...
... cables do not operate smoothly, ask a Yamaha dealer to replace them. Recommended lubricant: Yamaha chain and cable lube or SAE 10W30 motor oil 8-51 Lubricating the brake levers and brake pedal Lubricate the pivoting parts. Replace damaged cables. Lubricate the inner cables and the cable ends. Cables can result when the outer covering of controls could be restricted, which could cause...
Owners Manual
Page 171
... to the electrical system which could lead to a fire. Ignition fuse Auxiliary DC jack fuse 6. Spare main fuse Headlight fuse 4. Four-wheel drive fuse Signaling system fuse Backup fuse (for odometer and clock) Spare fuse (× 3) CAUTION: _ Specified fuses: Main fuse: Headlight fuse: Ignition fuse: Auxiliary DC jack fuse: Four-wheel drive fuse: Signaling system fuse: Backup fuse: 30 A 15 A 10 A 10 A 3A 10 A 10 A 8-57 To prevent accidental short-circuiting, turn off the main switch when checking or replacing a fuse. _ Main fuse 2. WARNING POTENTIAL HAZARD...
... to the electrical system which could lead to a fire. Ignition fuse Auxiliary DC jack fuse 6. Spare main fuse Headlight fuse 4. Four-wheel drive fuse Signaling system fuse Backup fuse (for odometer and clock) Spare fuse (× 3) CAUTION: _ Specified fuses: Main fuse: Headlight fuse: Ignition fuse: Auxiliary DC jack fuse: Four-wheel drive fuse: Signaling system fuse: Backup fuse: 30 A 15 A 10 A 10 A 3A 10 A 10 A 8-57 To prevent accidental short-circuiting, turn off the main switch when checking or replacing a fuse. _ Main fuse 2. WARNING POTENTIAL HAZARD...
Owners Manual
Page 179
... the wheel axles. 3. Rinse the machine off the end of wheel bearings, brakes, transmission seals and electrical devices. Before cleaning the machine: a. Block off immediately with clean water and dry all filler caps are properly installed. 2. b. Make sure the spark plug and all surfaces with warm water and mild, detergent-type soap. Do not apply degreaser to prevent water entry. Use only enough pressure to...
... the wheel axles. 3. Rinse the machine off the end of wheel bearings, brakes, transmission seals and electrical devices. Before cleaning the machine: a. Block off immediately with clean water and dry all filler caps are properly installed. 2. b. Make sure the spark plug and all surfaces with warm water and mild, detergent-type soap. Do not apply degreaser to prevent water entry. Use only enough pressure to...
Owners Manual
Page 188
Model Bulb voltage, wattage × quantity: Headlight Tail/brake light Indicator light: Neutral indicator light Reverse indicator light Coolant temperature warning light Park indicator light High-range indicator light Low-range indicator light Differential gear lock indicator light Fuses: Main fuse Headlight fuse Ignition fuse Auxiliary DC jack fuse Four-wheel-drive fuse Signaling system fuse Backup fuse 12 V, 30 W / 30 W × 2 12 V, 5 W / 21 W × 1 LED LED LED LED LED LED LED 30A 15A 10A 10A 3A 10A 10A YFM66FA 10-6
Model Bulb voltage, wattage × quantity: Headlight Tail/brake light Indicator light: Neutral indicator light Reverse indicator light Coolant temperature warning light Park indicator light High-range indicator light Low-range indicator light Differential gear lock indicator light Fuses: Main fuse Headlight fuse Ignition fuse Auxiliary DC jack fuse Four-wheel-drive fuse Signaling system fuse Backup fuse 12 V, 30 W / 30 W × 2 12 V, 5 W / 21 W × 1 LED LED LED LED LED LED LED 30A 15A 10A 10A 3A 10A 10A YFM66FA 10-6