Owners Manual
Page 6
...LABELS...1-1 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 ...4-3 Fuel gauge ...4-4 Handlebar switches ...4-4 Throttle lever ...4-6 Speed limiter ...4-7 Front brake lever...4-8 Rear brake pedal and lever ...4-8 Parking brake...4-9 Drive select lever ...4-10 Recoil starter...4-10 Fuel tank cap ...4-11 Fuel cock...4-12 Starter (choke) ...4-13 Seat...4-14...
...LABELS...1-1 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 ...4-3 Fuel gauge ...4-4 Handlebar switches ...4-4 Throttle lever ...4-6 Speed limiter ...4-7 Front brake lever...4-8 Rear brake pedal and lever ...4-8 Parking brake...4-9 Drive select lever ...4-10 Recoil starter...4-10 Fuel tank cap ...4-11 Fuel cock...4-12 Starter (choke) ...4-13 Seat...4-14...
Owners Manual
Page 7
... adjustment...4-18 Auxiliary DC jack...4-19 5 PRE-OPERATION CHECKS ...5-1 Front and rear brakes ...5-2 Fuel ...5-4 Engine oil ...5-6 Final gear oil...5-7 Coolant...5-7 Throttle lever ...5-8 Fittings and fasteners...5-8 Lights...5-8 Switches...5-9 Tires ...5-9 How to measure tire pressure...5-11 Tire wear limit...5-12 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 ...6-6 Parking...6-8 Parking on a slope...6-8 Accessories and loading ...6-10 7 RIDING YOUR ATV ...7-1 Getting...
... adjustment...4-18 Auxiliary DC jack...4-19 5 PRE-OPERATION CHECKS ...5-1 Front and rear brakes ...5-2 Fuel ...5-4 Engine oil ...5-6 Final gear oil...5-7 Coolant...5-7 Throttle lever ...5-8 Fittings and fasteners...5-8 Lights...5-8 Switches...5-9 Tires ...5-9 How to measure tire pressure...5-11 Tire wear limit...5-12 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 ...6-6 Parking...6-8 Parking on a slope...6-8 Accessories and loading ...6-10 7 RIDING YOUR ATV ...7-1 Getting...
Owners Manual
Page 8
......8-1 Owner's manual and tool kit...8-1 Periodic maintenance/ lubrication ...8-3 Panel removal and installation ...8-5 Engine oil...8-12 Final gear oil ...8-16 Cooling system...8-19 Changing the coolant ...8-20 Spark plug inspection...8-24 Air filter element cleaning...8-27 V-belt cooling duct check hose ...8-30 Spark arrester cleaning ...8-31 Carburetor adjustment...8-32 Idle speed adjustment ...8-33 Valve clearance adjustment ...8-33 Throttle lever adjustment...8-34 Front brake pad inspection...8-35 Rear brake shoe inspection ...8-35 Brake fluid level check...8-36 Brake fluid replacement...
......8-1 Owner's manual and tool kit...8-1 Periodic maintenance/ lubrication ...8-3 Panel removal and installation ...8-5 Engine oil...8-12 Final gear oil ...8-16 Cooling system...8-19 Changing the coolant ...8-20 Spark plug inspection...8-24 Air filter element cleaning...8-27 V-belt cooling duct check hose ...8-30 Spark arrester cleaning ...8-31 Carburetor adjustment...8-32 Idle speed adjustment ...8-33 Valve clearance adjustment ...8-33 Throttle lever adjustment...8-34 Front brake pad inspection...8-35 Rear brake shoe inspection ...8-35 Brake fluid level check...8-36 Brake fluid replacement...
Owners Manual
Page 20
Spark arrester 3. V-belt cooling duct check hose 15. Engine oil dipstick 18. Speedometer 23. DESCRIPTION AND MACHINE IDENTIFICATION 1. Front shock absorber assembly spring preload adjusting ring 6. Front shock absorber assembly spring preload adjusting ring 14. Fuel tank cap 25. Rear shock absorber assembly spring preload adjusting ring 2. V-belt case 8. Radiator cap 9. Tail/brake light 13. Oil filter cartridge 17. Rear brake lever 19. Brake pedal 7. Spark plug 5. Main switch 24. Left handlebar switches 20. Front brake lever NOTE: The machine you ...
Spark arrester 3. V-belt cooling duct check hose 15. Engine oil dipstick 18. Speedometer 23. DESCRIPTION AND MACHINE IDENTIFICATION 1. Front shock absorber assembly spring preload adjusting ring 6. Front shock absorber assembly spring preload adjusting ring 14. Fuel tank cap 25. Rear shock absorber assembly spring preload adjusting ring 2. V-belt case 8. Radiator cap 9. Tail/brake light 13. Oil filter cartridge 17. Rear brake lever 19. Brake pedal 7. Spark plug 5. Main switch 24. Left handlebar switches 20. Front brake lever NOTE: The machine you ...
Owners Manual
Page 24
... indicator light "N" " Coolant temperature warning light " " When the coolant temperature reaches a specified level, this happens, reduce the load to "ON", and then press the start switch. To check the coolant temperature warning light, shift the drive select lever into neutral, turn the key to specification. If this light comes on during operation, stop the engine as soon as it is safe to do so and allow the engine...
... indicator light "N" " Coolant temperature warning light " " When the coolant temperature reaches a specified level, this happens, reduce the load to "ON", and then press the start switch. To check the coolant temperature warning light, shift the drive select lever into neutral, turn the key to specification. If this light comes on during operation, stop the engine as soon as it is safe to do so and allow the engine...
Owners Manual
Page 27
... battery and recharge it. _ Start switch " " The starter motor cranks the engine when this switch is set to " ". 4-5 The engine stop switch controls ignition and can be used at all times to stop switch is pushed. The battery may discharge to the point that the engine stop the engine, especially in an emergency. EBU00607 CAUTION: _ Do not use the headlights with the engine turned off for details.) EBU01205 Engine stop switch...
... battery and recharge it. _ Start switch " " The starter motor cranks the engine when this switch is set to " ". 4-5 The engine stop switch controls ignition and can be used at all times to stop switch is pushed. The battery may discharge to the point that the engine stop the engine, especially in an emergency. EBU00607 CAUTION: _ Do not use the headlights with the engine turned off for details.) EBU01205 Engine stop switch...
Owners Manual
Page 28
... the lever is spring-loaded, the machine will decelerate, and the engine will increase the engine speed. Throttle lever 4-6 Before starting the engine, check the throttle to be hard to operate, making it does not work smoothly, check for the cause. Correct the problem before you can't find or solve the problem yourself. 1. EBU00062 Throttle lever Once the engine is running, movement of the...
... the lever is spring-loaded, the machine will decelerate, and the engine will increase the engine speed. Throttle lever 4-6 Before starting the engine, check the throttle to be hard to operate, making it does not work smoothly, check for the cause. Correct the problem before you can't find or solve the problem yourself. 1. EBU00062 Throttle lever Once the engine is running, movement of the...
Owners Manual
Page 45
... leaking out of the hose, joint or brake fluid reservoir of every ride. Brake fluid leakage (front brake) Check to see if any problem with improperly operating brakes. If the brakes do not provide proper braking performance, inspect the brake pads and shoes for one minute. Do not ride the ATV if you find any brake fluid is any leakage, the brake system should be a leak in this manual, have a Yamaha...
... leaking out of the hose, joint or brake fluid reservoir of every ride. Brake fluid leakage (front brake) Check to see if any problem with improperly operating brakes. If the brakes do not provide proper braking performance, inspect the brake pads and shoes for one minute. Do not ride the ATV if you find any brake fluid is any leakage, the brake system should be a leak in this manual, have a Yamaha...
Owners Manual
Page 50
... to cool before removing the radiator cap. Always use a thick rag over the cap. HOW TO AVOID THE HAZARD Wait for proper operation. 5-8 It must open smoothly and spring back to see that the throttle lever operates correctly. EBU01003 Lights Check the headlights and tail/brake light to escape before a ride. EBU01083 WARNING POTENTIAL HAZARD Removing the radiator cap when the engine and radiator are in working condition...
... to cool before removing the radiator cap. Always use a thick rag over the cap. HOW TO AVOID THE HAZARD Wait for proper operation. 5-8 It must open smoothly and spring back to see that the throttle lever operates correctly. EBU01003 Lights Check the headlights and tail/brake light to escape before a ride. EBU01083 WARNING POTENTIAL HAZARD Removing the radiator cap when the engine and radiator are in working condition...
Owners Manual
Page 62
... of control, increasing the chance of an accident. Parking on a slope WARNING POTENTIAL HAZARD Parking on hills that are so steep you must park on hills or other incline. Do not park the ATV at all on a hill or other inclines. EBU00211 EBU00215 Parking When parking, stop the engine and shift into neutral. Turn the fuel cock to "OFF" and apply the parking brake...
... of control, increasing the chance of an accident. Parking on a slope WARNING POTENTIAL HAZARD Parking on hills that are so steep you must park on hills or other incline. Do not park the ATV at all on a hill or other inclines. EBU00211 EBU00215 Parking When parking, stop the engine and shift into neutral. Turn the fuel cock to "OFF" and apply the parking brake...
Owners Manual
Page 89
... perform on page 6-1 to start to lose traction, reducing control and increasing the possibility of an accident. 7-21 Then release the parking brake. Set the parking brake and follow the instruction on pavement. With the engine idling, return the starter (choke) to begin riding your ATV. The centrifugal clutch will be hot when riding and afterwards; You should practice control of the throttle, brakes, and turning...
... perform on page 6-1 to start to lose traction, reducing control and increasing the possibility of an accident. 7-21 Then release the parking brake. Set the parking brake and follow the instruction on pavement. With the engine idling, return the starter (choke) to begin riding your ATV. The centrifugal clutch will be hot when riding and afterwards; You should practice control of the throttle, brakes, and turning...
Owners Manual
Page 112
...year Spark plug Air filter element Carburetor* Crankcase breather system* Exhaust system* Spark arrester Fuel line* Engine oil Engine oil filter cartridge Engine oil strainer* Final gear oil Front brake* Rear brake Every 20-40 hours (More often in wet or dusty areas.) 8-3 Check and adjust idle speed/starter operation. Replace every 12 months. Check coolant leakage. EBU00261 PERIODIC MAINTENANCE/LUBRICATION ITEM Valves* Cooling system ROUTINE Check valve clearance. Replace coolant every 24 months. Check condition. Replace if necessary. Replace if necessary. Replace gasket...
...year Spark plug Air filter element Carburetor* Crankcase breather system* Exhaust system* Spark arrester Fuel line* Engine oil Engine oil filter cartridge Engine oil strainer* Final gear oil Front brake* Rear brake Every 20-40 hours (More often in wet or dusty areas.) 8-3 Check and adjust idle speed/starter operation. Replace every 12 months. Check coolant leakage. EBU00261 PERIODIC MAINTENANCE/LUBRICATION ITEM Valves* Cooling system ROUTINE Check valve clearance. Replace coolant every 24 months. Check condition. Replace if necessary. Replace if necessary. Replace gasket...
Owners Manual
Page 113
... damaged. 8-4 WARNING Indicates a potential hazard that these items be serviced by a Yamaha dealer. NOTE: G Recommended brake fluid: DOT 4 G Brake fluid replacement: • When disassembling the master cylinder or caliper, replace the brake fluid. Wheels* • Repair if necessary. • Check bearing assemblies for cracks or damage. • Check balance/damage/runout. Front and rear • Check operation. suspension* • Correct if necessary. • Check operation./Replace if damaged. Steering system...
... damaged. 8-4 WARNING Indicates a potential hazard that these items be serviced by a Yamaha dealer. NOTE: G Recommended brake fluid: DOT 4 G Brake fluid replacement: • When disassembling the master cylinder or caliper, replace the brake fluid. Wheels* • Repair if necessary. • Check bearing assemblies for cracks or damage. • Check balance/damage/runout. Front and rear • Check operation. suspension* • Correct if necessary. • Check operation./Replace if damaged. Steering system...
Owners Manual
Page 131
... then drain the coolant from the coolant reservoir. 9. After draining the coolant, thoroughly flush the cooling system with clean tap water. 10. Replace the coolant drain bolt washer if it is damaged, and then tighten the coolant drain bolt to the specified torque. Remove the panel D. (See page 8-6 for panel removal and installation procedures.) 7. 1. Coolant reservoir drain hose 5. Radiator cap 1. Tightening torque: Coolant drain bolt: 10 Nm (1.0 m·...
... then drain the coolant from the coolant reservoir. 9. After draining the coolant, thoroughly flush the cooling system with clean tap water. 10. Replace the coolant drain bolt washer if it is damaged, and then tighten the coolant drain bolt to the specified torque. Remove the panel D. (See page 8-6 for panel removal and installation procedures.) 7. 1. Coolant reservoir drain hose 5. Radiator cap 1. Tightening torque: Coolant drain bolt: 10 Nm (1.0 m·...
Owners Manual
Page 151
....) 2. To make the brake light come on later, turn the adjusting nut in place. Rear brake light switch 2. EBU01259 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 just before braking takes effect. If necessary, adjust the brake light switch as follows. 1. Turn the adjusting nut while holding the rear brake light switch in direction a. Install the panel. 1.
....) 2. To make the brake light come on later, turn the adjusting nut in place. Rear brake light switch 2. EBU01259 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 just before braking takes effect. If necessary, adjust the brake light switch as follows. 1. Turn the adjusting nut while holding the rear brake light switch in direction a. Install the panel. 1.
Owners Manual
Page 152
... (all-purpose grease) Lubricate the inner cables and the cable ends. If the cables do not operate smoothly, ask a Yamaha dealer to replace them. WHAT CAN HAPPEN Corrosion can also become frayed or kinked. Recommended lubricant: Yamaha chain and cable lube or SAE 10W30 motor oil 8-43 Lubricating the brake levers and brake pedal Lubricate the pivoting parts.
... (all-purpose grease) Lubricate the inner cables and the cable ends. If the cables do not operate smoothly, ask a Yamaha dealer to replace them. WHAT CAN HAPPEN Corrosion can also become frayed or kinked. Recommended lubricant: Yamaha chain and cable lube or SAE 10W30 motor oil 8-43 Lubricating the brake levers and brake pedal Lubricate the pivoting parts.
Owners Manual
Page 157
1. Headlight fuse Ignition fuse Auxiliary DC jack fuse Signaling system fuse Spare fuse (× 2) Specified fuses: Main fuse: Headlight fuse: Ignition fuse: Auxiliary DC jack fuse: Signaling system fuse: 30 A 15 A 10 A 10 A 10 A 8-48 Spare main fuse 1. 2. 3. 4. 5. Main fuse 2.
1. Headlight fuse Ignition fuse Auxiliary DC jack fuse Signaling system fuse Spare fuse (× 2) Specified fuses: Main fuse: Headlight fuse: Ignition fuse: Auxiliary DC jack fuse: Signaling system fuse: 30 A 15 A 10 A 10 A 10 A 8-48 Spare main fuse 1. 2. 3. 4. 5. Main fuse 2.
Owners Manual
Page 165
... expensive repair bills have resulted from improper high pressure detergent applications such as those available in coin-operated car washers. 4. CLEANING Frequent, thorough cleaning of your machine will not only enhance its appearance but will improve its general performance and extend the useful life of wheel bearings, brakes, transmission seals and electrical devices. Block off immediately with clean water and dry...
... expensive repair bills have resulted from improper high pressure detergent applications such as those available in coin-operated car washers. 4. CLEANING Frequent, thorough cleaning of your machine will not only enhance its appearance but will improve its general performance and extend the useful life of wheel bearings, brakes, transmission seals and electrical devices. Block off immediately with clean water and dry...
Owners Manual
Page 167
... entering. 6. Lubricate all wheels off the ground. 5. If storing in the spark plug hole and reinstall the spark plug. EBU00530 B. Ground the spark plug wire and turn the engine over the exhaust pipe outlet to drain the fuel system. Tie a plastic bag over several times to coat the cylinder wall with a light film of your machine will require some preventive procedures to raise all control cables. 4. Do not...
... entering. 6. Lubricate all wheels off the ground. 5. If storing in the spark plug hole and reinstall the spark plug. EBU00530 B. Ground the spark plug wire and turn the engine over the exhaust pipe outlet to drain the fuel system. Tie a plastic bag over several times to coat the cylinder wall with a light film of your machine will require some preventive procedures to raise all control cables. 4. Do not...
Owners Manual
Page 174
Model Bulb voltage, wattage × quantity: Headlight Tail/brake light Neutral indicator light Reverse indicator light Coolant temperature warning light Meter lighting Fuse: Main fuse Headlight fuse Ignition fuse Auxiliary DC jack fuse Signaling system fuse 12 V, 30/30 W × 2 12 V, 5/21 W × 1 12 V, 1.7 W × 1 12 V, 1.7 W × 1 12 V, 1.7 W × 1 14 V, 3 W × 1 30 A 15 A 10 A 10 A 10 A YFM400A 10-6
Model Bulb voltage, wattage × quantity: Headlight Tail/brake light Neutral indicator light Reverse indicator light Coolant temperature warning light Meter lighting Fuse: Main fuse Headlight fuse Ignition fuse Auxiliary DC jack fuse Signaling system fuse 12 V, 30/30 W × 2 12 V, 5/21 W × 1 12 V, 1.7 W × 1 12 V, 1.7 W × 1 12 V, 1.7 W × 1 14 V, 3 W × 1 30 A 15 A 10 A 10 A 10 A YFM400A 10-6