2006 YAMAHA WOLVERINE 350 checking oil

Operating the drive select lever and
driving in reverse ...................................... 6-3
Engine break-in .......................................... 6-4
Parking ....................................................... 6-5
Parking on a slope ..................................... 6-5
Accessories and loading ............................ 6-6
RIDING YOUR ATV ...................................... 7-1
GETTING TO KNOW YOUR ATV............... 7-2
RIDE WITH CARE AND GOOD
JUDGEMENT ............................................ 7-2
BE CAREFUL WHERE YOU RIDE ............. 7-9
TURNING YOUR ATV .............................. 7-12
CLIMBING UPHILL ................................... 7-14
RIDING DOWNHILL.................................. 7-17
CROSSING A SLOPE............................... 7-18
CROSSING THROUGH SHALLOW
WATER ................................................... 7-19
RIDING OVER ROUGH TERRAIN ........... 7-22
SLIDING AND SKIDDING ......................... 7-22
WHAT TO DO IF... .................................... 7-23
WHAT TO DO... ........................................ 7-23
PERIODIC MAINTENANCE AND MINOR
REPAIR .......................................................... 8-1
Owner’s manual and tool kit ....................... 8-1Periodic maintenance and lubrication
chart ..........................................................8-3
Removing and installing the panel ..............8-7
Checking the spark plug .............................8-7
Engine oil and oil filter cartridge ..................8-9
Final gear oil .............................................8-13
Cleaning the air filter element ...................8-16
Cleaning the spark arrester ......................8-19
V-belt cooling duct check hose .................8-20
V-belt case drain plug ...............................8-20
Adjusting the carburetor ............................8-21
Adjusting the engine idling speed .............8-21
Adjusting the throttle cable free play .........8-22
Valve clearance ........................................8-23
Adjusting the drive select lever safety
system cable ...........................................8-23
Checking the front brake pads and rear
brake shoes ............................................8-23
Checking the brake fluid level ...................8-24
Changing the brake fluid ...........................8-25
Checking the front brake lever free
play .........................................................8-26
Adjusting the brake pedal and rear brake
lever free play .........................................8-26
Brake light switches ..................................8-29
Checking and lubricating the cables .........8-30
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8-10
8 2. Start the engine, warm it up for several min-
utes, and then turn it off.
3. Wait a few minutes until the oil settles before
checking.
4. Remove the engine oil filler cap, and then
wipe the dipstick off with a clean rag.
5. Insert the dipstick into the filler hole (without
screwing it in), and then remove it again to
check the oil level.
NOTE:The engine oil should be between the minimumand maximum level marks.
6. If the engine oil is at or below the minimum
level mark, add sufficient oil of the recom-
mended type to raise it to the correct level.
7. Insert the dipstick into the oil filler hole, and
then tighten the engine oil filler cap.
1. Engine oil filler cap
1. Dipstick
2. Maximum level mark
3. Minimum level mark
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8-13
8
CAUTION:ECB00300
In order to prevent clutch slippage (since the
engine oil also lubricates the clutch), do not
mix any chemical additives. Do not use oils
with a diesel specification of “CD” or oils of
a higher quality than specified. In addition,
do not use oils labeled “ENERGY CONSERV-
ING II” or higher.
Make sure that no foreign material enters thecrankcase.
10. Start the engine, and then let it idle for several
minutes while checking it for oil leakage. If oil
is leaking, immediately turn the engine off and
check for the cause.
11. Turn the engine off, and then check the oil lev-
el and correct it if necessary.
EBU23381Final gear oil The final gear case must be checked for oil leak-
age before each ride. If any leakage is found, have
a Yamaha dealer check and repair the ATV. In ad-
dition, the final gear oil level must be checked and
the oil changed as follows at the intervals specified
in the periodic maintenance and lubrication chart.
To check the final gear oil level
1. Place the ATV on a level surface.NOTE:The final gear oil level must be checked on a coldengine.
2. Remove the final gear oil filler bolt, and then
check the oil level in the final gear case.NOTE:The oil level should be at the brim of the filler hole. Recommended oil:
See page 10-1.
Oil quantity:
Without oil filter cartridge replacement:
2.20 L (2.33 US qt) (1.94 Imp.qt)
With oil filter cartridge replacement:
2.30 L (2.43 US qt) (2.02 Imp.qt)
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8-25
8Observe these precautions:

When checking the fluid level, make sure that
the top of the brake fluid reservoir is level.
Use only the recommended quality brake fluid,
otherwise the rubber seals may deteriorate,
causing leakage and poor braking performance.
Refill with the same type of brake fluid. Mixing
fluids may result in a harmful chemical reaction
and lead to poor braking performance.

Be careful that water does not enter the brake
fluid reservoir when refilling. Water will signifi-
cantly lower the boiling point of the fluid and may
result in vapor lock.
Brake fluid may deteriorate painted surfaces or
plastic parts. Always clean up spilled fluid imme-
diately.
As the brake pads wear, it is normal for the brake
fluid level to gradually go down. However, if the
brake fluid level goes down suddenly, have a
Yamaha dealer check the cause.EBU24280Changing the brake fluid Have a Yamaha dealer change the brake fluid at
the intervals specified in the NOTE after the peri-
odic maintenance and lubrication chart. In addi-
tion, have the oil seals of the brake master cylinder
and calipers as well as the brake hoses replaced at
the intervals listed below or whenever they are
damaged or leaking.
Oil seals: Replace every two years.
Brake hoses: Replace every four years.
1. Minimum level markRecommended brake fluid:
DOT 4
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8-30
8 3. Install the panel.
EBU24900Checking and lubricating the cables The operation and the condition of all control ca-
bles should be checked before each ride, and the
cables and cable ends should be lubricated if nec-
essary. If a cable is damaged or does not move
smoothly, have a Yamaha dealer check or replace
it.
WARNING
EWB02130Inspect cables frequently and replace if dam-
aged. Corrosion can result when the cable
sheaths become damaged, and cables can
also become frayed or kinked, which could re-
strict the operation of controls and lead to anaccident or injury.EBU24911Checking and lubricating the front and
rear brake levers The operation of the front and rear brake levers
should be checked before each ride, and the lever
pivots should be lubricated if necessary.
1. Brake light switch
2. Brake light switch adjusting nutRecommended lubricant:
Engine oil
Recommended lubricant:
Lithium-soap-based grease (all-purpose
grease)
U3D560E0.book Page 30 Tuesday, December 27, 2005 12:13 PM

INDEX
AAccessories and loading ................................................ 6-6
Air filter element, cleaning ............................................ 8-16BBattery .......................................................................... 8-32
Brake fluid, changing .................................................... 8-25
Brake fluid level, checking ............................................ 8-24
Brake lever free play, checking the front ...................... 8-26
Brake lever, front ............................................................ 4-5
Brake levers, checking and lubricating ......................... 8-30
Brake light switches ..................................................... 8-29
Brake pads and shoes, checking ................................. 8-23
Brake pedal and brake lever free play (rear),
adjusting ..................................................................... 8-26
Brake pedal and rear brake lever ................................... 4-5
Brake pedal, checking and lubricating ......................... 8-31
Brakes, front and rear .................................................... 5-3CCables, checking and lubricating ................................. 8-30
Carburetor, adjusting .................................................... 8-21
Chassis fasteners ........................................................... 5-6
Cleaning ......................................................................... 9-1DDrive select lever ............................................................ 4-7
Drive select lever and driving in reverse ........................ 6-3
Drive select lever safety system cable, adjusting ......... 8-23
Drive shaft universal joint, lubricating ........................... 8-31
EEngine break-in .............................................................. 6-4
Engine, cold start ........................................................... 6-1
Engine idling speed ...................................................... 8-21
Engine oil ....................................................................... 5-3
Engine oil and oil filter cartridge ..................................... 8-9
Engine, starting a warm ................................................. 6-3
Engine stop switch ......................................................... 4-3FFinal gear oil .......................................................... 5-3, 8-13
Fuel ......................................................................... 4-8, 5-3
Fuel cock ........................................................................ 4-9
Fuel tank cap .................................................................. 4-7
Fuses, replacing ........................................................... 8-34HHandlebar switches ........................................................ 4-3
Headlight beam, adjusting ............................................ 8-37
Headlight bulb, replacing .............................................. 8-35IIdentification numbers .................................................. 11-1
Indicator lights and warning light .................................... 4-2
Instruments, lights and switches .................................... 5-6KKey identification number ............................................. 11-1
Knuckle pivots, lubricating ............................................ 8-32
Knuckle shafts, lubricating ........................................... 8-32LLabel locations ............................................................... 2-1
U3D560E0.book Page 1 Tuesday, December 27, 2005 12:13 PM

Light switch .................................................................... 4-3MMain switch .................................................................... 4-1
Model label ................................................................... 11-2NNeutral indicator light ..................................................... 4-2OOil temperature warning light ......................................... 4-2
Owner’s manual and tool kit ........................................... 8-1PPanel, removing and installing ....................................... 8-7
Parking ........................................................................... 6-5
Parking brake ................................................................. 4-6
Parking on a slope ......................................................... 6-5
Part locations ................................................................. 3-1
Periodic maintenance and lubrication chart ................... 8-3
Pre-operation check list ................................................. 5-1RReverse indicator light ................................................... 4-2
Riding your ATV ............................................................. 7-1SSafety information .......................................................... 1-1
Seat .............................................................................. 4-11
Shock absorber assemblies, adjusting the front .......... 4-13
Shock absorber assembly, adjusting the rear .............. 4-14
Spark arrester, cleaning ............................................... 8-19
Spark plug, checking ...................................................... 8-7
Specifications ............................................................... 10-1
Speed limiter .................................................................. 4-4
Starter (choke) ............................................................. 4-10
Start switch .................................................................... 4-3
Steering shaft, lubricating ............................................ 8-32Storage .......................................................................... 9-2
Storage compartment .................................................. 4-12
TTail/brake light bulb, replacing ..................................... 8-37
Throttle cable free play, adjusting ................................ 8-22
Throttle lever ........................................................... 4-4, 5-4
Tire pressure, measuring ............................................... 5-5
Tires ............................................................................... 5-4
Tire wear limit ................................................................ 5-6
Troubleshooting ........................................................... 8-40
Troubleshooting chart .................................................. 8-41VValve clearance ........................................................... 8-23
V-belt case drain plug .................................................. 8-20
V-belt cooling duct check hose .................................... 8-20
Vehicle identification number ....................................... 11-1WWheel bearings, checking ............................................ 8-31
Wheel, installing ........................................................... 8-39
Wheel, removing .......................................................... 8-38
U3D560E0.book Page 2 Tuesday, December 27, 2005 12:13 PM