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 ...4-6 Speed limiter ...4-7 Front brake lever...4-8 Brake pedal and rear brake lever ...4-8 Parking brake...4-9 Shift pedal ...4-10 Reverse knob...4-10 Recoil starter...4-11 Fuel tank cap ...4-12 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 ...4-6 Speed limiter ...4-7 Front brake lever...4-8 Brake pedal and rear brake lever ...4-8 Parking brake...4-9 Shift pedal ...4-10 Reverse knob...4-10 Recoil starter...4-11 Fuel tank cap ...4-12 Fuel cock...4-13 Starter (choke) ...4-14 Seat...
Owners Manual
Page 7
...18 Auxiliary 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 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...6-6 To decelerate...6-7 Engine break-in ...6-7 Parking...6-9 Parking on a slope...6-9 Accessories and loading ...6-11...
...18 Auxiliary 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 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...6-6 To decelerate...6-7 Engine break-in ...6-7 Parking...6-9 Parking on a slope...6-9 Accessories and loading ...6-11...
Owners Manual
Page 8
...manual and tool kit...8-1 Periodic maintenance/ lubrication ...8-3 Engine oil and oil filter element ...8-5 Final gear oil ...8-10 Spark plug inspection...8-12 Air filter element cleaning...8-13 Spark arrester cleaning ...8-17 Carburetor adjustment...8-18 Idle speed adjustment ...8-19 Valve clearance adjustment ...8-20 Throttle lever adjustment...8-20 Front brake pad check ...8-21 Rear brake shoe inspection ...8-21 Brake fluid level check...8-22 Brake fluid replacement ...8-23 Front brake lever free play...8-24 Brake pedal and rear brake lever adjustment ...8-25 Adjusting the rear brake light...
...manual and tool kit...8-1 Periodic maintenance/ lubrication ...8-3 Engine oil and oil filter element ...8-5 Final gear oil ...8-10 Spark plug inspection...8-12 Air filter element cleaning...8-13 Spark arrester cleaning ...8-17 Carburetor adjustment...8-18 Idle speed adjustment ...8-19 Valve clearance adjustment ...8-20 Throttle lever adjustment...8-20 Front brake pad check ...8-21 Rear brake shoe inspection ...8-21 Brake fluid level check...8-22 Brake fluid replacement ...8-23 Front brake lever free play...8-24 Brake pedal and rear brake lever adjustment ...8-25 Adjusting the rear brake light...
Owners Manual
Page 21
.... 11. 12. Front wheel Rear brake lever Parking brake lock plate Starter (choke) Speedometer Reverse knob Front brake lever Throttle lever Fuel gauge Main switch Left handlebar switches 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 Spark arrester Rear carrier Seat Auxiliary DC jack Front carrier Brake pedal Headlights Fuel cock Recoil starter Tail/brake light Rear wheel Shift pedal 13. 14. 15...
.... 11. 12. Front wheel Rear brake lever Parking brake lock plate Starter (choke) Speedometer Reverse knob Front brake lever Throttle lever Fuel gauge Main switch Left handlebar switches 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 Spark arrester Rear carrier Seat Auxiliary DC jack Front carrier Brake pedal Headlights Fuel cock Recoil starter Tail/brake light Rear wheel Shift pedal 13. 14. 15...
Owners Manual
Page 28
... not use the headlights with the engine turned off all times to turn on the high beam and the taillight. EBU00053 EBU00607 Handlebar switches Start switch " " The starter motor cranks the engine when this should happen, remove the battery and recharge it. _ The engine stop switch controls ignition and can be used at all the lights. The engine will not operate properly. CAUTION: See starting the engine. (See page 6-1 for...
... not use the headlights with the engine turned off all times to turn on the high beam and the taillight. EBU00053 EBU00607 Handlebar switches Start switch " " The starter motor cranks the engine when this should happen, remove the battery and recharge it. _ The engine stop switch controls ignition and can be used at all the lights. The engine will not operate properly. CAUTION: See starting the engine. (See page 6-1 for...
Owners Manual
Page 29
... when you start the engine. WARNING POTENTIAL HAZARD Malfunction of the machine by varying the throttle position. Because the throttle is spring-loaded, the machine will decelerate, and the engine will increase the engine speed. EBU00062 Throttle lever Once the engine is running, movement of the throttle lever will return to an idle any time the hand is removed from the throttle lever. Correct the problem before...
... when you start the engine. WARNING POTENTIAL HAZARD Malfunction of the machine by varying the throttle position. Because the throttle is spring-loaded, the machine will decelerate, and the engine will increase the engine speed. EBU00062 Throttle lever Once the engine is running, movement of the throttle lever will return to an idle any time the hand is removed from the throttle lever. Correct the problem before...
Owners Manual
Page 47
WARNING POTENTIAL HAZARD Riding with the brakes. Do not ride the ATV if you find any problem with improperly operating brakes. HOW TO AVOID THE HAZARD Always check the brakes at the start of every ride. WHAT CAN HAPPEN You could lose braking ability, which could lead to an accident. If a problem cannot be corrected by the adjustment procedures provided in this manual, have a Yamaha dealer check for the cause. 5-4
WARNING POTENTIAL HAZARD Riding with the brakes. Do not ride the ATV if you find any problem with improperly operating brakes. HOW TO AVOID THE HAZARD Always check the brakes at the start of every ride. WHAT CAN HAPPEN You could lose braking ability, which could lead to an accident. 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 56
... THE HAZARD When riding in cold weather. Shift the transmission into neutral. HOW TO AVOID THE HAZARD Read the Owner's Manual carefully. If there is a control or function you begin riding. 1. Starting a cold engine WARNING POTENTIAL HAZARD Freezing control cables 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...
... THE HAZARD When riding in cold weather. Shift the transmission into neutral. HOW TO AVOID THE HAZARD Read the Owner's Manual carefully. If there is a control or function you begin riding. 1. Starting a cold engine WARNING POTENTIAL HAZARD Freezing control cables 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...
Owners Manual
Page 57
... transmission is in any gear if the rear brake lever is recommended to shift into neutral before starting the engine. _ Position 3: Cold engine startambient temperature above 25 °C (80 °F) and warm engine start switch. 6-2 However, it . a. Fully open 1. Completely close the throttle lever and start the engine by pushing the start position. 1 2 3 4 5 6 7 8 9 10 5. If the light does not come on , ask a Yamaha dealer to the figure: Position 1: Cold engine...
... transmission is in any gear if the rear brake lever is recommended to shift into neutral before starting the engine. _ Position 3: Cold engine startambient temperature above 25 °C (80 °F) and warm engine start switch. 6-2 However, it . a. Fully open 1. Completely close the throttle lever and start the engine by pushing the start position. 1 2 3 4 5 6 7 8 9 10 5. If the light does not come on , ask a Yamaha dealer to the figure: Position 1: Cold engine...
Owners Manual
Page 60
... the throttle lever to control the amount of power you to the closed position and repeatedly depress the shift pedal until it stops. Depress the shift pedal, and then release the reverse knob. 1. Neutral position CAUTION: _ Do not coast for starting, accelerating, climbing hills, etc. EBU12951 Shifting This model has a 5-speed forward and 1-speed reverse transmission with the engine off, and do not tow...
... the throttle lever to control the amount of power you to the closed position and repeatedly depress the shift pedal until it stops. Depress the shift pedal, and then release the reverse knob. 1. Neutral position CAUTION: _ Do not coast for starting, accelerating, climbing hills, etc. EBU12951 Shifting This model has a 5-speed forward and 1-speed reverse transmission with the engine off, and do not tow...
Owners Manual
Page 64
... steep you must park on an incline, put the ATV in low gear, apply the parking brake, and block the front and rear wheels with rocks or other inclines. WHAT CAN HAPPEN The ATV could not walk up them easily. 1. Locked position 6-9 EBU00211 EBU01296 Parking When parking, stop the engine and shift into neutral. Parking on a slope WARNING POTENTIAL HAZARD Parking on hills or...
... steep you must park on an incline, put the ATV in low gear, apply the parking brake, and block the front and rear wheels with rocks or other inclines. WHAT CAN HAPPEN The ATV could not walk up them easily. 1. Locked position 6-9 EBU00211 EBU01296 Parking When parking, stop the engine and shift into neutral. Parking on a slope WARNING POTENTIAL HAZARD Parking on hills or...
Owners Manual
Page 89
... is not released before trying more difficult to come in this area before applying the throttle, the front wheels may lift off -road use of the throttle, brakes, shifting procedures, and turning techniques in contact with these components. You should practice control of the throttle and shift pedal properly. As you move the shift pedal. Make sure that the engine and exhaust pipe will start the engine.
... is not released before trying more difficult to come in this area before applying the throttle, the front wheels may lift off -road use of the throttle, brakes, shifting procedures, and turning techniques in contact with these components. You should practice control of the throttle and shift pedal properly. As you move the shift pedal. Make sure that the engine and exhaust pipe will start the engine.
Owners Manual
Page 112
.... Replace if necessary. Replace if necessary. Replace (warm engine before draining). Check idle speed/starter operation. Check operation. Clean. Replace if necessary. Check fuel hose for cracks or damage. 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 Front brake* Rear brake* Clutch ROUTINE Check valve clearance. Replace every 12 months. Clean. Tighten if necessary. Replace gasket...
.... Replace if necessary. Replace if necessary. Replace (warm engine before draining). Check idle speed/starter operation. Check operation. Clean. Replace if necessary. Check fuel hose for cracks or damage. 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 Front brake* Rear brake* Clutch ROUTINE Check valve clearance. Replace every 12 months. Clean. Tighten if necessary. Replace gasket...
Owners Manual
Page 137
... earlier, turn clockwise. 1. Rear brake light switch adjusting nut 8-28 Turn the adjusting nut while holding the rear brake light switch in direction a. Then, turn it 1/8 turn the adjusting nut in place. To make the brake light come on just before braking takes effect. 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. Loosen the locknut. 2. Adjusting bolt 1. Rear brake light switch 2. If...
... earlier, turn clockwise. 1. Rear brake light switch adjusting nut 8-28 Turn the adjusting nut while holding the rear brake light switch in direction a. Then, turn it 1/8 turn the adjusting nut in place. To make the brake light come on just before braking takes effect. 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. Loosen the locknut. 2. Adjusting bolt 1. Rear brake light switch 2. If...
Owners Manual
Page 139
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. Remove the nuts from the wheel. 4. Remove the wheel. EBU01112 Lubricate the inner cables and the cable ends. Recommended lubricant: Yamaha chain and cable lube or SAE 10W30 motor oil Wheel removal 1. Recommended lubricant: Lithium-soap-based grease (all-purpose grease) 8-30 If the cables do not operate smoothly, ask a Yamaha dealer to replace them. Loosen the wheel nuts. 2.
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. Remove the nuts from the wheel. 4. Remove the wheel. EBU01112 Lubricate the inner cables and the cable ends. Recommended lubricant: Yamaha chain and cable lube or SAE 10W30 motor oil Wheel removal 1. Recommended lubricant: Lithium-soap-based grease (all-purpose grease) 8-30 If the cables do not operate smoothly, ask a Yamaha dealer to replace them. Loosen the wheel nuts. 2.
Owners Manual
Page 142
...) is blown, turn on the switches. Always make sure the connections are located under the seat. 2. Fuse replacement 1. Specified fuses: Main fuse: Headlight fuse: Ignition fuse: Auxiliary DC jack fuse: Carburetor warmer fuse: 30 A 15 A 10 A 10 A 10 A 8-33 Using a conventional battery charger may shorten the battery life. 2. If a fuse is required for a month or longer, remove the battery and store it in the machine. EBU00385 EBU00853* Battery maintenance 1. When...
...) is blown, turn on the switches. Always make sure the connections are located under the seat. 2. Fuse replacement 1. Specified fuses: Main fuse: Headlight fuse: Ignition fuse: Auxiliary DC jack fuse: Carburetor warmer fuse: 30 A 15 A 10 A 10 A 10 A 8-33 Using a conventional battery charger may shorten the battery life. 2. If a fuse is required for a month or longer, remove the battery and store it in the machine. EBU00385 EBU00853* Battery maintenance 1. When...
Owners Manual
Page 143
WARNING POTENTIAL HAZARD Using an improper fuse. 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. Main fuse 2. Auxiliary DC jack fuse 5. Carburetor warmer fuse 8-34 WHAT CAN HAPPEN An improper fuse can cause damage to the electrical system which could lead to a fire. Ignition fuse 4. Spare main fuse CAUTION: _ To prevent accidental short-circuiting, turn off the main switch when checking or replacing a fuse. _ 1. Spare fuse (× 2) 2.
WARNING POTENTIAL HAZARD Using an improper fuse. 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. Main fuse 2. Auxiliary DC jack fuse 5. Carburetor warmer fuse 8-34 WHAT CAN HAPPEN An improper fuse can cause damage to the electrical system which could lead to a fire. Ignition fuse 4. Spare main fuse CAUTION: _ To prevent accidental short-circuiting, turn off the main switch when checking or replacing a fuse. _ 1. Spare fuse (× 2) 2.
Owners Manual
Page 151
... wheel axles. 3. Once the majority of wheel bearings, brakes, transmission seals and electrical devices. EBU00419 CLEANING AND STORAGE A. Block off immediately with clean water and dry all surfaces with a paint brush. Rinse the dirt and degreaser off , wash all filler caps are properly installed. 2. If the engine case is handy for hard-to prevent water entry. Before cleaning the machine: a. Make sure the spark plug...
... wheel axles. 3. Once the majority of wheel bearings, brakes, transmission seals and electrical devices. EBU00419 CLEANING AND STORAGE A. Block off immediately with clean water and dry all surfaces with a paint brush. Rinse the dirt and degreaser off , wash all filler caps are properly installed. 2. If the engine case is handy for hard-to prevent water entry. Before cleaning the machine: a. Make sure the spark plug...
Owners Manual
Page 153
... any rubber parts or the seat cover. 9-3 Ground the spark plug wire and turn the engine over the exhaust pipe outlet to prevent moisture from entering. 6. Tie a plastic bag over several times to raise all control cables. 4. Block up the frame to coat the cylinder wall with fresh fuel and add the specified amount of oil. Do not apply oil to be drained instead. 2. After...
... any rubber parts or the seat cover. 9-3 Ground the spark plug wire and turn the engine over the exhaust pipe outlet to prevent moisture from entering. 6. Tie a plastic bag over several times to raise all control cables. 4. Block up the frame to coat the cylinder wall with fresh fuel and add the specified amount of oil. Do not apply oil to be drained instead. 2. After...
Owners Manual
Page 160
MODEL Fuses: Main fuse Headlight fuse Ignition fuse Auxiliary DC jack fuse Carburetor warmer fuse 30 A 15 A 10 A 10 A 10 A YFM400 10-6
MODEL Fuses: Main fuse Headlight fuse Ignition fuse Auxiliary DC jack fuse Carburetor warmer fuse 30 A 15 A 10 A 10 A 10 A YFM400 10-6