Owners Manual
Page 6
...SAFETY INFORMATION...2-1 DESCRIPTION AND MACHINE IDENTIFICATION ...3-1 Identification number records...3-2 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 ...4-4 Fuel gauge ...4-4 Handlebar switches ...4-5 Throttle lever ...4-7 Speed limiter ...4-8 Front brake lever...4-9 Brake pedal and rear brake lever ...4-9 Parking brake...4-10 Shift pedal ...4-11 Reverse knob...4-11 Recoil starter...4-12 Fuel tank cap ...4-13 Fuel cock...4-13 Starter (choke) ...4-14 Seat...
...SAFETY INFORMATION...2-1 DESCRIPTION AND MACHINE IDENTIFICATION ...3-1 Identification number records...3-2 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 ...4-4 Fuel gauge ...4-4 Handlebar switches ...4-5 Throttle lever ...4-7 Speed limiter ...4-8 Front brake lever...4-9 Brake pedal and rear brake lever ...4-9 Parking brake...4-10 Shift pedal ...4-11 Reverse knob...4-11 Recoil starter...4-12 Fuel tank cap ...4-13 Fuel cock...4-13 Starter (choke) ...4-14 Seat...
Owners Manual
Page 7
... DC jack...4-19 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 Throttle lever ...5-8 Fittings and fasteners...5-8 Lights...5-8 Switches...5-8 Tires ...5-9 How to measure tire pressure...5-11 Tire wear limit...5-12 6 OPERATION ...6-1 Starting a cold engine...6-1 Starting a warm engine ...6-3 Warming up ...6-3 Reverse knob operation and reverse driving ...6-4 Shifting...6-5 To start out and accelerate...6-5 To decelerate...6-6 Engine break-in ...6-7 Parking...6-8 Parking on a slope...6-9 Accessories and...
... DC jack...4-19 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 Throttle lever ...5-8 Fittings and fasteners...5-8 Lights...5-8 Switches...5-8 Tires ...5-9 How to measure tire pressure...5-11 Tire wear limit...5-12 6 OPERATION ...6-1 Starting a cold engine...6-1 Starting a warm engine ...6-3 Warming up ...6-3 Reverse knob operation and reverse driving ...6-4 Shifting...6-5 To start out and accelerate...6-5 To decelerate...6-6 Engine break-in ...6-7 Parking...6-8 Parking on a slope...6-9 Accessories and...
Owners Manual
Page 8
... Engine oil and oil filter element ...8-5 Final gear oil ...8-9 Differential gear oil...8-12 Axle boots...8-14 Spark plug inspection...8-14 Air filter element cleaning...8-15 Spark arrester cleaning ...8-19 Carburetor adjustment...8-20 Idle speed adjustment ...8-21 Valve clearance adjustment ...8-22 Throttle lever adjustment...8-22 Front brake pad check ...8-23 Rear brake shoe inspection...8-23 Brake fluid level check ...8-24 Brake fluid replacement ...8-25 Front brake lever free play...8-26 Rear brake pedal and lever adjustment ...8-27 Adjusting the rear brake light switch ...8-30 Clutch...
... Engine oil and oil filter element ...8-5 Final gear oil ...8-9 Differential gear oil...8-12 Axle boots...8-14 Spark plug inspection...8-14 Air filter element cleaning...8-15 Spark arrester cleaning ...8-19 Carburetor adjustment...8-20 Idle speed adjustment ...8-21 Valve clearance adjustment ...8-22 Throttle lever adjustment...8-22 Front brake pad check ...8-23 Rear brake shoe inspection...8-23 Brake fluid level check ...8-24 Brake fluid replacement ...8-25 Front brake lever free play...8-26 Rear brake pedal and lever adjustment ...8-27 Adjusting the rear brake light switch ...8-30 Clutch...
Owners Manual
Page 21
... starter 9. Headlights 7. Speedometer 17. On command four-wheel drive switch 19. Auxiliary DC jack 4. Brake pedal 6. Rear wheel 11. Front brake lever 20. Rear brake lever 14. Fuel gauge 22. Fuel cock 8. Shift pedal 12. Parking brake lock plate 15. Main switch 23. Left handlebar switches 8 9 10 11 12 13 14 NOTE: The machine you have purchased may differ slightly from those shown in the figures of this manual. 3-1 Tail/brake light 10. Throttle lever 21. Seat...
... starter 9. Headlights 7. Speedometer 17. On command four-wheel drive switch 19. Auxiliary DC jack 4. Brake pedal 6. Rear wheel 11. Front brake lever 20. Rear brake lever 14. Fuel gauge 22. Fuel cock 8. Shift pedal 12. Parking brake lock plate 15. Main switch 23. Left handlebar switches 8 9 10 11 12 13 14 NOTE: The machine you have purchased may differ slightly from those shown in the figures of this manual. 3-1 Tail/brake light 10. Throttle lever 21. Seat...
Owners Manual
Page 25
... allow the engine to cool down for about 10 minutes. 1 2 3 4 5 6 7 8 9 10 11 CAUTION: _ G 1. 2. 3. 4. NOTE: Due to specification. EBU00044 Reverse indicator light "REVERSE" This indicator light comes on when the transmission is out. EBU00045 EBU00605 Four-wheel-drive indicator light " " This indicator light comes on when the 2WD/ 4WD switch is overloaded. Reverse indicator light "REVERSE" Neutral indicator light "NEUTRAL" Oil temperature warning light " " Four-wheel drive indicator light " " _ G The engine may...
... allow the engine to cool down for about 10 minutes. 1 2 3 4 5 6 7 8 9 10 11 CAUTION: _ G 1. 2. 3. 4. NOTE: Due to specification. EBU00044 Reverse indicator light "REVERSE" This indicator light comes on when the transmission is out. EBU00045 EBU00605 Four-wheel-drive indicator light " " This indicator light comes on when the 2WD/ 4WD switch is overloaded. Reverse indicator light "REVERSE" Neutral indicator light "NEUTRAL" Oil temperature warning light " " Four-wheel drive indicator light " " _ G The engine may...
Owners Manual
Page 28
.... Start switch " " Light switch " / /OFF" Set the switch to " " to turn on the low beams, the taillight and the meter lighting. Engine stop switch is set to " ". 4-5 CAUTION: _ Do not use the headlights with the engine turned off all times to stop switch controls ignition and can be used at all the lights. Light switch " / /OFF" 2. The battery may discharge to the point that the engine stop switch " / " 3. EBU00053 EBU00607 Handlebar switches Start switch " " The starter motor...
.... Start switch " " Light switch " / /OFF" Set the switch to " " to turn on the low beams, the taillight and the meter lighting. Engine stop switch is set to " ". 4-5 CAUTION: _ Do not use the headlights with the engine turned off all times to stop switch controls ignition and can be used at all the lights. Light switch " / /OFF" 2. The battery may discharge to the point that the engine stop switch " / " 3. EBU00053 EBU00607 Handlebar switches Start switch " " The starter motor...
Owners Manual
Page 30
... lever is released. Regulate the speed of throttle. Because the throttle is spring-loaded, the machine will decelerate, and the engine will increase the engine speed. HOW TO AVOID THE HAZARD Check the operation of the throttle lever before riding the ATV. Before starting the engine, check the throttle to an idle any time the hand is removed from the throttle lever. Correct the problem before you...
... lever is released. Regulate the speed of throttle. Because the throttle is spring-loaded, the machine will decelerate, and the engine will increase the engine speed. HOW TO AVOID THE HAZARD Check the operation of the throttle lever before riding the ATV. Before starting the engine, check the throttle to an idle any time the hand is removed from the throttle lever. Correct the problem before you...
Owners Manual
Page 47
Do not ride the ATV if you find any problem with improperly operating brakes. WARNING POTENTIAL HAZARD Riding with the 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. 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. WARNING POTENTIAL HAZARD Riding with the 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. HOW TO AVOID THE HAZARD Always check the brakes at the start of every ride.
Owners Manual
Page 56
Set the parking brake. 2. Shift the transmission into neutral. If there is a control or function you begin riding. 1. Turn the fuel cock to " ". 4. HOW TO AVOID THE HAZARD When riding in cold weather, always make sure all controls. WARNING POTENTIAL HAZARD Operating ATV without being familiar with all control cables work smoothly before you do not understand, ask your Yamaha dealer. 6-1 HOW TO AVOID...
Set the parking brake. 2. Shift the transmission into neutral. If there is a control or function you begin riding. 1. Turn the fuel cock to " ". 4. HOW TO AVOID THE HAZARD When riding in cold weather, always make sure all controls. WARNING POTENTIAL HAZARD Operating ATV without being familiar with all control cables work smoothly before you do not understand, ask your Yamaha dealer. 6-1 HOW TO AVOID...
Owners Manual
Page 57
... close the throttle lever and start the engine by pushing the start - If the light does not come on , ask a Yamaha dealer to shift into neutral before starting the engine. _ _ Position 3: Cold engine start- ambient temperature below 5 °C (40 °F). Half open 3. Use the starter (choke) in neutral, the neutral indicator light should come on . a. G The engine can be started in any gear if the rear brake lever is...
... close the throttle lever and start the engine by pushing the start - If the light does not come on , ask a Yamaha dealer to shift into neutral before starting the engine. _ _ Position 3: Cold engine start- ambient temperature below 5 °C (40 °F). Half open 3. Use the starter (choke) in neutral, the neutral indicator light should come on . a. G The engine can be started in any gear if the rear brake lever is...
Owners Manual
Page 60
... automatic clutch. To shift into first gear and release the shift pedal. 3. Even in the neutral position, the transmission is only properly lubricated when the engine is running. Neutral position R. CAUTION: Always close the throttle while shifting gears. Shift into neutral, return the throttle lever to the engine and drive train may cause damage. _ EBU00205 To start out and accelerate: 1. Shift pedal N. EBU12951 Shifting This model has a 5-speed forward and 1-speed reverse transmission...
... automatic clutch. To shift into first gear and release the shift pedal. 3. Even in the neutral position, the transmission is only properly lubricated when the engine is running. Neutral position R. CAUTION: Always close the throttle while shifting gears. Shift into neutral, return the throttle lever to the engine and drive train may cause damage. _ EBU00205 To start out and accelerate: 1. Shift pedal N. EBU12951 Shifting This model has a 5-speed forward and 1-speed reverse transmission...
Owners Manual
Page 63
After break-in: Avoid prolonged full throttle operation. Parking When parking, stop the engine and shift into neutral. Rev the machine freely through the gears but do not use full throttle at any time. Turn the fuel cock to "OFF" and apply the parking brake. 1. EBU00211 10-20 hours: Avoid prolonged operation above 3/4 throttle. Locked position 6-8 Vary speeds occasionally.
After break-in: Avoid prolonged full throttle operation. Parking When parking, stop the engine and shift into neutral. Rev the machine freely through the gears but do not use full throttle at any time. Turn the fuel cock to "OFF" and apply the parking brake. 1. EBU00211 10-20 hours: Avoid prolonged operation above 3/4 throttle. Locked position 6-8 Vary speeds occasionally.
Owners Manual
Page 89
... when riding and afterwards; With the engine idling, lift the shift pedal to coordinate the use only, and handling maneuvers are more difficult terrain. Release the shift pedal and apply the throttle smoothly. You should practice control of the throttle, brakes, shifting procedures, and turning techniques in this area before applying the throttle, the front wheels may lift off the ground resulting in contact with the operation...
... when riding and afterwards; With the engine idling, lift the shift pedal to coordinate the use only, and handling maneuvers are more difficult terrain. Release the shift pedal and apply the throttle smoothly. You should practice control of the throttle, brakes, shifting procedures, and turning techniques in this area before applying the throttle, the front wheels may lift off the ground resulting in contact with the operation...
Owners Manual
Page 112
... if necessary. Replace (Warm engine before draining). EBU00261 PERIODIC MAINTENANCE/LUBRICATION ITEM Valves* Spark plug Air filter element Carburetor* Crankcase breather system* Exhaust system* Spark arrester Fuel line* Engine oil Engine oil filter element Engine oil strainer Final gear oil Differential gear oil Front brake* Rear brake* Clutch ROUTINE Check valve clearance. Clean. Clean. Adjust if necessary. Replace if necessary. Replace if necessary. Check and adjust idle speed/starter operation. Replace if necessary. Check operation. Clean. Replace gasket if necessary...
... if necessary. Replace (Warm engine before draining). EBU00261 PERIODIC MAINTENANCE/LUBRICATION ITEM Valves* Spark plug Air filter element Carburetor* Crankcase breather system* Exhaust system* Spark arrester Fuel line* Engine oil Engine oil filter element Engine oil strainer Final gear oil Differential gear oil Front brake* Rear brake* Clutch ROUTINE Check valve clearance. Clean. Clean. Adjust if necessary. Replace if necessary. Replace if necessary. Check and adjust idle speed/starter operation. Replace if necessary. Check operation. Clean. Replace gasket if necessary...
Owners Manual
Page 139
.... 2. To make the brake light come on later, turn the adjusting nut in direction b. Adjusting bolt 1. Rear brake light switch adjusting nut 8-30 Rear brake light switch 2. Slowly turn clockwise. 1. Locknut 2. Clutch adjustment 1. EBU00834 EBU00346 Adjusting the rear brake light switch The rear brake light switch, which is activated by the brake pedal and brake levers, is felt. Turn the adjusting nut while holding the rear brake light switch in direction a. Then, turn it 1/8 turn the adjusting bolt counterclockwise until resistance is...
.... 2. To make the brake light come on later, turn the adjusting nut in direction b. Adjusting bolt 1. Rear brake light switch adjusting nut 8-30 Rear brake light switch 2. Slowly turn clockwise. 1. Locknut 2. Clutch adjustment 1. EBU00834 EBU00346 Adjusting the rear brake light switch The rear brake light switch, which is activated by the brake pedal and brake levers, is felt. Turn the adjusting nut while holding the rear brake light switch in direction a. Then, turn it 1/8 turn the adjusting bolt counterclockwise until resistance is...
Owners Manual
Page 141
Remove the nuts from the wheel. 4. Loosen the wheel nuts. 2. Recommended lubricant: Lithium-soap-based grease (all-purpose grease) 8-32 Remove the wheel. Recommended lubricant: Yamaha chain and cable lube or SAE 10W30 motor oil Wheel removal 1. Elevate the ATV and place a suitable stand under the frame. 3. EBU00727 Brake and shift pedal/brake lever lubrication Lubricate the pivoting parts of each lever and pedal. EBU01112 Lubricate the inner cables and the cable ends. If the cables do not operate smoothly, ask a Yamaha dealer to replace them.
Remove the nuts from the wheel. 4. Loosen the wheel nuts. 2. Recommended lubricant: Lithium-soap-based grease (all-purpose grease) 8-32 Remove the wheel. Recommended lubricant: Yamaha chain and cable lube or SAE 10W30 motor oil Wheel removal 1. Elevate the ATV and place a suitable stand under the frame. 3. EBU00727 Brake and shift pedal/brake lever lubrication Lubricate the pivoting parts of each lever and pedal. EBU01112 Lubricate the inner cables and the cable ends. If the cables do not operate smoothly, ask a Yamaha dealer to replace them.
Owners Manual
Page 144
... located under the seat. 2. Fuse replacement 1. Then turn off the main switch and install a new fuse of the specified amperage. If a fuse is not used for recharging a sealed-type battery. Completely recharge the battery before reinstallation. Specified fuses: Main fuse: Headlight fuse: Ignition fuse: Auxiliary DC jack fuse: Carburetor warmer fuse: Four-wheel-drive fuse: 30 A 15 A 10 A 10 A 10 A 3A 8-35 If the fuse immediately blows again, consult a Yamaha dealer. EBU00385 EBU00853 Battery maintenance 1.
... located under the seat. 2. Fuse replacement 1. Then turn off the main switch and install a new fuse of the specified amperage. If a fuse is not used for recharging a sealed-type battery. Completely recharge the battery before reinstallation. Specified fuses: Main fuse: Headlight fuse: Ignition fuse: Auxiliary DC jack fuse: Carburetor warmer fuse: Four-wheel-drive fuse: 30 A 15 A 10 A 10 A 10 A 3A 8-35 If the fuse immediately blows again, consult a Yamaha dealer. EBU00385 EBU00853 Battery maintenance 1.
Owners Manual
Page 145
HOW TO AVOID THE HAZARD Always use a material in place of the specified rating. Never use a fuse of the proper fuse. 1. Headlight fuse 3. Four-wheel-drive fuse 3. Carburetor warmer fuse 8-36 Main fuse 2. Auxiliary DC jack fuse 5. WARNING POTENTIAL HAZARD Using an improper fuse. Spare main fuse CAUTION: _ To prevent accidental short-circuiting, turn off the main switch when checking or replacing a fuse. _ 1. Ignition fuse 4. Spare fuse (× 2) 2. 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 material in place of the specified rating. Never use a fuse of the proper fuse. 1. Headlight fuse 3. Four-wheel-drive fuse 3. Carburetor warmer fuse 8-36 Main fuse 2. Auxiliary DC jack fuse 5. WARNING POTENTIAL HAZARD Using an improper fuse. Spare main fuse CAUTION: _ To prevent accidental short-circuiting, turn off the main switch when checking or replacing a fuse. _ 1. Ignition fuse 4. Spare fuse (× 2) 2. WHAT CAN HAPPEN An improper fuse can cause damage to the electrical system which could lead to a fire.
Owners Manual
Page 153
... its general performance and extend the useful life of the exhaust pipe to -get-at places. 5. Block off , wash all surfaces with a garden hose. Do not apply degreaser to do the job. 9-1 Make sure the spark plug and all surfaces with a paint brush. Rinse the dirt and degreaser off immediately with clean water and dry all filler caps are...
... its general performance and extend the useful life of the exhaust pipe to -get-at places. 5. Block off , wash all surfaces with a garden hose. Do not apply degreaser to do the job. 9-1 Make sure the spark plug and all surfaces with a paint brush. Rinse the dirt and degreaser off immediately with clean water and dry all filler caps are...
Owners Manual
Page 162
MODEL Specified fuses: Main fuse Headlight fuse Ignition fuse Auxiliary DC jack fuse Carburetor warmer fuse Four-wheel-drive fuse 30 A 15 A 10 A 10 A 10 A 3A YFM400FW 10-6
MODEL Specified fuses: Main fuse Headlight fuse Ignition fuse Auxiliary DC jack fuse Carburetor warmer fuse Four-wheel-drive fuse 30 A 15 A 10 A 10 A 10 A 3A YFM400FW 10-6