2006 Yamaha Motorsports Big Bear 400 4x4 Problems and Repair Information

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Owners Manual - Page 7

......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 loading...
Owners Manual - Page 8

... and skidding ...7-38 What to do if ...7-40 What to do ...7-40 8 PERIODIC MAINTENANCE AND ADJUSTMENT...8-1 Owner's manual and tool kit...8-1 Periodic maintenance chart for the emission control system...8-3 General maintenance and lubrication chart ...8-4 Engine oil and oil filter element ...8-6 Final gear oil ...8-11 Differential gear oil...8-14 Axle boots...8-16 Spark plug...
Owners Manual - Page 14

... other vehicles including motorcycles and cars. G... Never carry a passenger on hills or over obstacles, if you . A collision or rollover can result if you do not follow these instructions: G Read this manual and all labels carefully and follow the age recommendation: - An ATV handles differently from a certified instructor. Beginners should never operate an ATV with engine...
Owners Manual - Page 18

... installation or use the size and type of accessories. Cargo should be properly distributed and securely attached. Never exceed the stated load capacity for carrying cargo or pulling a trailer. Always maintain proper tire pressure as described in this manual. Reduce speed and follow instructions in this manual for an ATV. FOR MORE INFORMATION ABOUT...
Owners Manual - Page 25

... when the transmission is too hot. Restart after making sure that the engine oil temperature is... in the 4WD position. If the light comes on to warn that the light is overloaded. EBU00802 EBU01140 Indicator and warning lights Oil temperature warning light " " When the oil temperature reaches a specified level, this happens, reduce the load to specification...
Owners Manual - Page 26

... inspect the electrical circuit. 4-3 Go ahead with the transmission in neutral. Push start switch with riding. Engine oil temperature and electrical circuit are OK. Oil temperature...EBU00733 Oil temperature warning light checking method ACB-10E Turn the main switch to "ON" and the engine stop switch to " ". Oil temperature is high. Oil temperature warning light does not come on ...
Owners Manual - Page 30

...the engine,... engine. EBU00062 Throttle lever Once the engine is... running, movement of the throttle lever will return to the idle position as soon as the lever is released. HOW TO AVOID THE HAZARD Check the operation of the throttle lever before riding the ATV. Because the throttle is spring-loaded, the machine will decelerate, and the engine... will increase the engine speed. ...
Owners Manual - Page 34

Neutral is located on the left side of the engine. Neutral position R. The shift pedal is one position above reverse. Reverse knob "REV" 1. Shift pedal N. Reverse knob "REV" The reverse knob is at the ... in reverse gear. 1. Refer to shift into reverse gear. EBU00084 EBU01028 Shift pedal This machine is equipped with a constantmesh 5-speed forward and 1-speed reverse transmission.
Owners Manual - Page 35

... rope all the way out. HOW TO AVOID THE HAZARD Put the transmission in gear and/or starting the engine. 1. Recoil starter 4-12 Then pull forcefully, being careful not to move unexpectedly, which could cause an accident. WARNING POTENTIAL HAZARD Starting the engine in neutral and set the parking brake before starting the...
Owners Manual - Page 42

... V, 120 W (10 A) 4. Open the auxiliary DC jack cap, and then insert the accessory power plug into the jack. Maximum rated capacity for suitable work lights, radios, etc. Special...19 Set the light switch to "OFF". 2. The auxiliary DC jack can be used when the engine is running. 1. Start the engine. (See pages 6-1-6-3.) 3. EBU01002 Standard position: B A - Minimum (soft) E - The ...
Owners Manual - Page 43

... DC jack 2. This may become difficult. Do not use accessories requiring more than the above maximum capacity. Auxiliary DC jack cap G Do not use an automotive cigarette lighter or other accessories with the headlights turned on, the battery will lose its charge and engine starting may overload the circuit and cause the fuse...
Owners Manual - Page 47

... 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...
Owners Manual - Page 49

... containing methanol is closed securely. Do not refuel right after the engine has been running and is overfilled, fuel could spill out due to spill fuel, especially on the engine or exhaust pipe. Wipe up . Fuel expands when it may cause fuel system damage or vehicle performance problems. WARNING POTENTIAL HAZARD Improper care when refueling. Gasohol containing ethanol can...
Owners Manual - Page 56

... begin riding. 1. EBU00161 EBU00749 OPERATION WARNING Indicates a potential hazard that could cause an accident or injury. Shift the transmission into neutral. HOW TO AVOID THE HAZARD Read the Owner's Manual carefully. Turn the fuel cock to "ON". 3. Starting a cold engine WARNING POTENTIAL HAZARD Freezing control cables in cold weather, always make sure all controls.
Owners Manual - Page 57

... brake lever is applied. Completely close the throttle lever and start the engine by pushing the start - If the light does not come on , ask a Yamaha dealer to inspect it is recommended to the figure: Position 1: Cold engine start- NOTE: G When the transmission is in neutral, the neutral indicator light should come on .
Owners Manual - Page 60

... have available at a given speed or for long periods with centrifugal automatic clutch. Even in the neutral position, the transmission is only properly lubricated when the engine is running. Otherwise, damage to the engine and drive train may cause damage. _ EBU00205 To start out and accelerate: 1. Shift into neutral, and then turn the...
Owners Manual - Page 78

... a trailer. Reduce your Owner's Manual for carrying cargo or pulling a trailer. 7-11 MAXIMUM LOADING LIMIT G Vehicle loading limit (total weight of cargo, rider and accessories, and tongue weight): 210 kg ...33 lbf) WARNING POTENTIAL HAZARD Overloading this ATV. Always follow the instructions in vehicle handling which could lead to an accident. Allow greater distance for this ATV...
Owners Manual - Page 108

...tool kit and low-pressure tire gauge in the vinyl bag and always carry it is an obligation of the machine owner. Owner's manual EBU00515 ...service. HOW TO AVOID THE HAZARD Turn off the engine when performing maintenance unless otherwise specified. 8-1 Owner's manual and tool kit You are recommended to put this owner's manual in the storage box. 1. Have a Yamaha dealer perform service...
Owners Manual - Page 109

... wrench available during a service operation requiring one, take your own preventive maintenance and minor repairs. NOTE: If you do not have questions, consult an authorized Yamaha ATV dealer. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1. WHAT CAN HAPPEN Improper installation of accessories or modification of accessories. All parts and accessories added to this vehicle should be genuine Yamaha...
Owners Manual - Page 124

... measure the electrode gap with one of the engine. For example, a very white center electrode porcelain color could indicate an intake air leak or carburetion problem for that cylinder. Spark plug gap: 0.6-0.7 mm...a Yamaha dealer. Wipe off any grime from the threads and tighten it to diagnose such problems yourself. Tightening torque: Spark plug: 17.5 Nm (1.75 m·kgf, 12.7 ft·...

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