2009 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 chart for
the emission control system .....................8-3
General maintenance and lubrication
chart ..........................................................8-5
Removing and installing the panel ..............8-8
Checking the spark plug .............................8-8
Engine oil and oil filter cartridge ................8-10
Final gear oil .............................................8-14
Cleaning the air filter element ...................8-17
Cleaning the spark arrester ......................8-21
V-belt cooling duct check hose .................8-22
V-belt case drain plug ...............................8-22
Adjusting the carburetor ............................8-23
Adjusting the engine idling speed .............8-23
Adjusting the throttle cable free play .........8-24
Valve clearance ........................................8-25
Adjusting the drive select lever safety
system cable ...........................................8-25
Checking the front brake pads and rear
brake shoes ............................................8-25
Checking the brake fluid level ...................8-26
Changing the brake fluid ...........................8-27
Checking the front brake lever free play ...8-28
Adjusting the brake pedal and rear brake
lever free play and checking the brake
pedal position ..........................................8-28
Axle boots .................................................8-32
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8-11
82. Check the engine oil level on a cold engine.
TIPIf the engine was started before checking the oil
level, be sure to warm up the engine sufficiently,
and then wait at least ten minutes until the oil set-tles for an accurate reading.
3. Remove the engine oil filler cap, and then
wipe the dipstick off with a clean rag.
4. Insert the dipstick into the filler hole (without
screwing it in), and then remove it again to
check the oil level.
TIPThe engine oil should be between the minimumand maximum level marks.
5. 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.
6. 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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8-14
8
TIPBe sure to wipe off spilled oil on any parts after theengine and exhaust system have cooled down.NOTICEECB00300
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.9. 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.
10. Turn the engine off, wait at least ten minutes,
and then check the oil level and correct it if
necessary.
EBU23383Final 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- 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)1.“CD” specification
2.“ENERGY CONSERVING II”
1
2
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8-27
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.EBU24281Changing the brake fluid Have a Yamaha dealer change the brake fluid at
the intervals specified in the TIP after the periodic
maintenance and lubrication chart. In addition,
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 dam-
aged or leaking.
Oil seals: Replace every two years.
Brake hoses: Replace every four years.
1. Minimum level markRecommended brake fluid:
DOT 4
1
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8-33
8
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.EBU28711Checking 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.
EBU28832Checking and lubricating the brake
pedal The operation of the brake pedal should be
checked before each ride, and the pedal pivot
should be lubricated if necessary.TIPTo access the brake pedal pivot, remove panel A.(See page 8-8.) Recommended lubricant:
Engine oil
Recommended lubricants:
Front brake lever:
Silicone grease
Rear brake lever:
Lithium-soap-based greaseRecommended lubricant:
Lithium-soap-based grease
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8-34
8
EBU24962Checking the wheel hub bearings The front and rear wheel hub bearings must be
checked at the intervals specified in the periodic
maintenance and lubrication chart. If there is play
in a wheel hub or if a wheel does not turn smoothly,
have a Yamaha dealer check the wheel hub bear-
ings.EBU25102Lubricating the steering shaft The steering shaft must be lubricated at the inter-
vals specified in the periodic maintenance and lu-
brication chart.
EBU29180Battery This model is equipped with a VRLA (Valve Regu-
lated Lead Acid) battery. There is no need to check
the electrolyte or to add distilled water. However,
the battery lead connections need to be checked
and, if necessary, tightened.NOTICEECB00620Never attempt to remove the battery cell seals,as this would permanently damage the battery.
WARNING
EWB02160Battery electrolyte is poisonous and danger-
ous, as it contains sulfuric acid, which can
cause severe burns. Avoid contact with skin,
eyes or clothing. Always shield your eyes
when working near batteries.
Antidote:
EXTERNAL: Flush with water.
INTERNAL: Drink large quantities of water or
milk. Follow with milk of magnesia, beaten egg
or vegetable oil. Call a physician immediately.Recommended lubricant:
Lithium-soap-based grease
U3D563E0.book Page 34 Monday, May 12, 2008 11:12 AM

INDEX
AAccessories and loading ................................................ 6-6
Air filter element, cleaning ............................................ 8-17
Axle boots .................................................................... 8-32BBattery .......................................................................... 8-34
Brake fluid, changing .................................................... 8-27
Brake fluid level, checking ............................................ 8-26
Brake lever free play, checking the front ...................... 8-28
Brake lever, front ............................................................ 4-5
Brake levers, checking and lubricating ......................... 8-33
Brake light switches ..................................................... 8-32
Brake pads and shoes, checking ................................. 8-25
Brake pedal and brake lever free play (rear) and
brake pedal position, adjusting and checking ............ 8-28
Brake pedal and rear brake lever ................................... 4-5
Brake pedal, checking and lubricating ......................... 8-33
Brakes, front and rear .................................................... 5-3CCables, checking and lubricating ................................. 8-32
Carburetor, adjusting .................................................... 8-23
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 ......... 8-25
EEngine break-in .............................................................. 6-4
Engine, cold start ........................................................... 6-1
Engine idling speed ...................................................... 8-23
Engine oil ....................................................................... 5-3
Engine oil and oil filter cartridge ................................... 8-10
Engine, starting a warm ................................................. 6-3
Engine stop switch ......................................................... 4-3FFinal gear oil .......................................................... 5-3, 8-14
Fuel ......................................................................... 4-8, 5-3
Fuel cock ........................................................................ 4-9
Fuel tank cap .................................................................. 4-7
Fuses, replacing ........................................................... 8-37HHandlebar switches ........................................................ 4-3
Headlight beam, adjusting ............................................ 8-40
Headlight bulb, replacing .............................................. 8-38IIdentification numbers .................................................. 11-1
Indicator lights and warning light .................................... 4-2
Instruments, lights and switches .................................... 5-6KKey identification number ............................................. 11-1LLabel locations ............................................................... 2-1
Light switch .................................................................... 4-3
U3D563E0.book Page 1 Monday, May 12, 2008 11:12 AM

MMain switch .................................................................... 4-1
Maintenance and lubrication chart ................................. 8-5
Maintenance chart, emission control system ................. 8-3
Model label ................................................................... 11-2NNeutral indicator light ..................................................... 4-2OOil temperature warning light ......................................... 4-2
Owner’s manual and tool kit ........................................... 8-1PPanel, removing and installing ....................................... 8-8
Parking ........................................................................... 6-5
Parking brake ................................................................. 4-6
Parking on a slope ......................................................... 6-5
Part locations ................................................................. 3-1
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 ............................................... 8-21
Spark plug, checking ...................................................... 8-8
Specifications ............................................................... 10-1
Speed limiter .................................................................. 4-4
Starter (choke) ............................................................. 4-10
Start switch .................................................................... 4-3
Steering shaft, lubricating ............................................ 8-34Storage .......................................................................... 9-2
Storage compartment .................................................. 4-12
TTail/brake light bulb, replacing ..................................... 8-40
Throttle cable free play, adjusting ................................ 8-24
Throttle lever ........................................................... 4-4, 5-4
Tire pressure, measuring ............................................... 5-5
Tires ............................................................................... 5-4
Tire wear limit ................................................................ 5-6
Troubleshooting ........................................................... 8-43
Troubleshooting chart .................................................. 8-44VValve clearance ........................................................... 8-25
V-belt case drain plug .................................................. 8-22
V-belt cooling duct check hose .................................... 8-22
Vehicle identification number ....................................... 11-1WWheel hub bearings, checking ..................................... 8-34
Wheel, installing ........................................................... 8-42
Wheel, removing .......................................................... 8-41
U3D563E0.book Page 2 Monday, May 12, 2008 11:12 AM