2004 YAMAHA WOLVERINE 350 belt

OPERATION ...........................................6-1
Starting a cold engine ...........................6-3
Starting a warm engine .........................6-9
Warming up...........................................6-9
Drive select lever operation and
reverse driving ..................................6-11
Engine break-in ...................................6-15
Parking ................................................6-17
Parking on a slope ..............................6-19
Accessories and loading .....................6-21
RIDING YOUR ATV..................................7-1
Getting to know your ATV .....................7-3
Ride with care and good judgement .....7-5
Be careful where you ride ...................7-27
Turning your ATV ................................7-39
Climbing uphill.....................................7-45
Riding downhill ....................................7-55
Crossing a slope .................................7-59
Crossing through shallow water ..........7-63
Riding over rough terrain ....................7-69
Sliding and skidding ............................7-71
What to do if .......................................7-75
What to do ..........................................7-75
67
PERIODIC MAINTENANCE AND
ADJUSTMENT ........................................ 8-1
Owner’s manual and tool kit ................. 8-3
Periodic maintenance/lubrication.......... 8-7
Panel removal and installation............ 8-15
Engine oil and oil filter cartridge ......... 8-19
Final gear oil ....................................... 8-29
Differential gear oil replacement ......... 8-35
Axle boots ........................................... 8-41
Spark plug inspection ......................... 8-43
Air filter element cleaning ................... 8-49
V-belt cooling duct check hose ........... 8-57
V-belt case drain plug ......................... 8-57
Carburetor adjustment ........................ 8-59
Idle speed adjustment ........................ 8-61
Valve clearance adjustment ............... 8-63
Throttle lever adjustment .................... 8-65
Front brake pad check ........................ 8-67
Rear brake shoe inspection ................ 8-67
Brake fluid level check ........................ 8-69
Brake fluid replacement ...................... 8-73
Front brake lever free play.................. 8-75
Rear brake pedal and lever
adjustment ........................................ 8-77
Adjusting the rear brake light
switch ............................................... 8-83
Cable inspection and lubrication......... 8-85
8
U5UH60.book Page 2 Wednesday, October 8, 2003 9:05 AM

3-1
EBU00032
DESCRIPTION AND MACHINE
IDENTIFICATION1. Rear shock absorber
assembly spring preload
adjusting ring
2. Storage box and tool kit
3. Spark plug
4. Front shock absorber
assembly spring preload
adjusting ring
5. Brake pedal
6. V-belt case
7. Fuel cock
8. Air filter case
9. Fuses
10. Tail/brake light
11. Front shock absorber
assembly spring preload
adjusting ring
12. V-belt cooling duct check
hose
13. Oil filter cartridge14. Engine oil dipstick
15. Rear brake lever
16. Left handlebar switches
17. Starter (choke)
18. Horn switch
19. Drive select lever
20. Speedometer
21. Main switch
22. Fuel tank cap
23. Right handlebar
switch
24. Throttle lever
25. Front brake leverNOTE:The machine you have purchased may differ
slightly from those shown in the figures of this
manual.
U5UH60.book Page 1 Wednesday, October 8, 2003 9:05 AM

7-65
1. Air filter case check hose
1. Flexible de contrôle du boîtier de filtre à air
1. Manguera de comprobación de la caja del filtro de aire
Test your brakes after leaving the water. Do not
continue to ride your ATV without verifying that
you have regained proper braking ability.CAUTION:_ After riding your ATV in water, be sure to drain
the trapped water by removing the check hose
at the bottom of the air filter case, the V-belt
cooling duct check hose, the drive select lever
box check hose and the storage box check
hose. Also, remove the V-belt case drain plug
to drain any water that may have accumulated.
Wash the ATV in fresh water if it has been op-
erated in salt water or muddy conditions. _
U5UH60.book Page 65 Wednesday, October 8, 2003 9:05 AM

7-67 1. V-belt cooling duct check hose
1. Flexible de contrôle du conduit de refroidissement de la courroie
trapézoïdale
1. Manguera de comprobación del conducto de enfriamiento de
la correa trapezoidal
1. Drive select lever box check hose
1. Flexible de contrôle du boîtier du levier de présélection
1. Manguera de comprobación de la caja de la palanca de
selección de marcha
1. Storage box check hose
1. Flexible de contrôle du compartiment de rangement
1. Manguera de comprobación del compartimiento porta objetos
1. V-belt case drain plug
1. Boulon de vidange du carter de courroie trapézoïdale
1. Tapón de drenaje de la caja de la correa trapezoidal
U5UH60.book Page 67 Wednesday, October 8, 2003 9:05 AM

8-7
EBU00262
PERIODIC MAINTENANCE/LUBRICATION
ITEM ROUTINEINITIAL EVERY
1
month3
months6
months6
months1
year
Valves*Check valve clearance.
Adjust if necessary.
Spark plugCheck condition.
Adjust gap and clean.
Replace if necessary.Air filter elementClean.
Replace if necessary.Every 20–40 hours
(More often in wet or dusty areas.)
Carburetor*Check and adjust idle speed/starter operation.
Adjust if necessary.Crankcase breather
system*Check breather hose for cracks or damage.
Replace if necessary.Exhaust system*Check for leakage.
Tighten if necessary.
Replace gasket(s) if necessary.Fuel line*Check fuel hose for cracks or damage.
Replace if necessary.Engine oil
Replace. (Warm engine before draining.)Engine oil filter cartridge
Replace.Engine oil strainer*
Clean.Final gear oil
Check oil level/oil leakage.
Replace every 12 months.Differential gear oil
Front brake*Check operation/fluid leakage. (See NOTE page 8-8.)
Correct if necessary.Rear brakeCheck operation.
Adjust if necessary.V-belt*Check operation.
Check for cracks or damage.U5UH60.book Page 7 Wednesday, October 8, 2003 9:05 AM

8-57 1. V-belt cooling duct check hose
1. Flexible de contrôle du conduit de refroidissement de la courroie
trapézoïdale
1. Manguera de comprobación del conducto de enfriamiento de
la correa trapezoidal
1. V-belt case drain plug
1. Boulon de vidange du carter de courroie trapézoïdale
1. Tapón de drenaje de la caja de la correa trapezoidal
EBU06411
V-belt cooling duct check hose
If dust or water collects in the V-belt cooling duct
check hose, remove the hose and clean it.
EBU08741
V-belt case drain plug
After riding in water deep enough to allow it to en-
ter the V-belt case, remove this plug to drain the
water from the case.NOTE:_ If water drains from the V-belt case after removing
the plug, have a Yamaha dealer inspect the ATV
as the water may affect other engine parts. _
U5UH60.book Page 57 Wednesday, October 8, 2003 9:05 AM

10-4
Transmission:
Primary reduction system V-belt
Secondary reduction system Shaft drive
Secondary reduction ratio 41/21
× 24/18
× 33/9 (9.545)
Transmission type V-belt automatic
Operation Left hand operation
Forward gear 35/20 (1.750)
Reverse gear 26/15 (1.733)
Chassis:
Frame type Steel tube frame
Caster angle 4°
Trail 21 mm
Tire:
Type Tubeless
Size front AT25
×8 - 12
rear AT25
× 10 - 12
Brake:
Front brake type Dual disc brake
operation Right hand operation
Rear brake type Drum brake
operation Left hand and right foot operation Model YFM350FA
U5UH60.book Page 4 Wednesday, October 8, 2003 9:05 AM