engine oil YAMAHA BRUIN 350 2005 Owners Manual

EBU00015
1-CONTENTS
LOCATION OF THE WARNING AND
SPECIFICATION LABELS ...................... 1-1
SAFETY INFORMATION ......................... 2-1
DESCRIPTION AND MACHINE
IDENTIFICATION ................................... 3-1
Identification number records ............... 3-3
Key identification number ..................... 3-5
Vehicle identification number ............... 3-7
Model label ........................................... 3-9
CONTROL FUNCTIONS ........................ 4-1
Main switch........................................... 4-1
Indicator and warning lights.................. 4-3
Speedometer ...................................... 4-11
Handlebar switches ............................ 4-13
Throttle lever ...................................... 4-19
Speed limiter ...................................... 4-21
Front brake lever ................................ 4-23
Brake pedal and rear brake lever ....... 4-25
Parking brake ..................................... 4-27
Drive select lever ................................ 4-29
Recoil starter ...................................... 4-31
1234
Fuel tank cap ..................................... 4-31
Fuel cock............................................ 4-33
Starter (choke) .................................. 4-35
Seat.................................................... 4-37
Storage box........................................ 4-39
Front carrier ....................................... 4-41
Rear carrier ........................................ 4-41
Front shock absorber adjustment ...... 4-43
Rear shock absorber adjustment ....... 4-45
PRE-OPERATION CHECKS .................. 5-1
Front and rear brakes .......................... 5-5
Fuel ...................................................... 5-9
Engine oil ........................................... 5-13
Final gear oil ...................................... 5-15
Differential gear oil ............................. 5-17
Throttle lever ...................................... 5-17
Fittings and fasteners......................... 5-19
Lights ................................................. 5-19
Switches............................................. 5-19
Tires ................................................... 5-21
How to measure tire pressure ............ 5-25
Tire wear limit..................................... 5-27
5
U5UH61.book Page 1 Tuesday, April 20, 2004 10:10 AM

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............ 8-17
Engine oil and oil filter cartridge ......... 8-21
Final gear oil ....................................... 8-31
Differential gear oil replacement ......... 8-39
Axle boots ........................................... 8-45
Spark plug inspection ......................... 8-47
Air filter element cleaning ................... 8-53
V-belt cooling duct check hose ........... 8-61
V-belt case drain plug ......................... 8-61
Carburetor adjustment ........................ 8-63
Idle speed adjustment ........................ 8-65
Valve clearance adjustment ............... 8-67
Select lever safety system cable
adjustment ........................................ 8-67
Throttle lever adjustment .................... 8-69
Front brake pad check ........................ 8-71
Rear brake shoe inspection ................ 8-71
Brake fluid level check ........................ 8-73
Brake fluid replacement ...................... 8-77
Front brake lever free play.................. 8-79
Rear brake pedal and lever
adjustment ........................................ 8-81
8
U5UH61.book Page 2 Tuesday, April 20, 2004 10:10 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.
U5UH61.book Page 1 Tuesday, April 20, 2004 10:10 AM

4-5 1. Reverse indicator light “REVERSE”
2. Neutral indicator light “NEUTRAL”
3. Four-wheel-drive indicator light “”
4. Oil temperature warning light “”
1. Témoin de marche arrière “REVERSE”
2. Témoin de point mort “NEUTRAL”
3. Témoin 4x4 “”
4. Témoin d’avertissement de la température d’huile “”
1. Luz indicadora de marcha atrás “REVERSE”
2. Luz de control de punto muerto “NEUTRAL”
3. Luz de control del modo de tracción de cuatro ruedas “”
4. Luz de aviso de la temperatura del aceite “”
EBU11400
Oil temperature warning light “”
When the oil temperature reaches a specified lev-
el, this light comes on to warn that the engine oil
temperature is too hot. If the light comes on during
operation, stop the engine as soon as it is safe to
do so and allow the engine to cool down for about
10 minutes.CAUTION:_

The engine may overheat if the ATV is
overloaded. If this happens, reduce the
load to specification.


Restart after making sure that the light is
out. Continuous use while the light is on
may cause damage to the engine.
_
U5UH61.book Page 5 Tuesday, April 20, 2004 10:10 AM

4-7
EBU07330
Oil temperature warning light checking method
ACB-10E
Turn the main switch to “ON” and the
engine stop switch to “”.
Oil temperature warning
light does not come on.
Oil temperature warning
light comes on.
Check engine oil temperature.
Oil temperature warning
light does not come on.
Engine oil temperature and
electrical circuit are OK. Go
ahead with riding.
Push start switch with the
transmission in neutral.
Ask a Yamaha dealer to
inspect the electrical circuit.
Oil tempera-
ture is low.
Allow to cool.
Oil tempera-
ture is high.
Oil temperature
warning light comes
on momentarily.
U5UH61.book Page 7 Tuesday, April 20, 2004 10:10 AM

4-31 1. Recoil starter
1. Lanceur à réenroulement
1. Arranque por tracción de cable
1. Fuel tank cap
1. Bouchon du réservoir de carburant
1. Tapón del depósito de combustible
EBU01264
Recoil starter
Firmly grasp the handle and pull slightly until en-
gagement can be felt. Then pull forcefully, being
careful not to pull the rope all the way out.
WARNING
_ Shift the drive select lever into the neutral po-
sition and apply the parking brake before start-
ing the engine or the ATV could start to move
unexpectedly, which could cause an accident. _
EBU00092
Fuel tank cap
Remove the fuel tank cap by turning it counter-
clockwise.
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5-1
EBU00113
PRE-OPERATION CHECKS
Before using this machine, check the following points:
ITEM ROUTINE PAGE
Front brakeCheck operation, free play, fluid level and fluid leakage.
Fill with DOT 4 brake fluid if necessary.5-5–5-7,
8-71–8-79
Rear brakeCheck operation, condition and free play.
Adjust if necessary.5-5–5-7,
8-71, 8-81–8-85
FuelCheck fuel level.
Fill with fuel if necessary.5-9–5-11
Engine oilCheck oil level.
Fill with oil if necessary.5-13, 8-21–8-31
Final gear oil and
differential gear oilCheck for leakage.5-15–5-17,
8-31–8-43
ThrottleCheck for proper throttle cable operation and free play. 5-17, 8-69
Wheels and tiresCheck tire pressure, wear and damage.5-21–5-27,
8-93–8-95
Fittings and fastenersCheck all fittings and fasteners. 5-19
Lights and switchesCheck for proper operation. 5-19, 8-107–8-111
Axle bootsCheck for damage. 8-45
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5-13
EBU10842
Engine oil
Make sure the engine oil is at the specified level.
Add oil as necessary. (See pages 8-21–8-31.)CAUTION:_

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
CONSERVING II” or higher.


Make sure that no foreign material enters
the crankcase.
_
Recommended engine oil type and quantity:
See page 10-2.
U5UH61.book Page 13 Tuesday, April 20, 2004 10:10 AM

6-7 a. Starter (choke)
1. Fully open
2. Half open
3. Closed
a. Starter (enrichisseur)
1. Complètement ouvert
2. Mi-ouvert
3. Fermé
a. Arrancador (choke)
1. Abre completamente
2. Semiabierto
3. Cerrado
NOTE:_

If the engine fails to start, release the start
switch, and then push the start switch again.
Pause a few seconds before the next at-
tempt. Each cranking should be as short as
possible to preserve battery energy. Do not
crank the engine more than 10 seconds on
each attempt.


If the battery is discharged, pull the recoil
starter to start the engine.
_7. If the engine is started with the starter (choke)
in position
1, the starter (choke) should be
returned to position
2 to warm up the en-
gine. If the engine is started with the starter
(choke) in position
2, keep the starter
(choke) in this position to warm up the en-
gine.
8. Continue warming up the engine until it idles
smoothly and return the starter (choke) to po-
sition
3 before riding.CAUTION:_ See the “Engine break-in” section prior to op-
erating the engine for the first time. _
U5UH61.book Page 7 Tuesday, April 20, 2004 10:10 AM

8-7
EBU02621
PERIODIC MAINTENANCE/LUBRICATION
NOTE:_

For ATVs not equipped with an odometer or an hour meter, follow the month maintenance intervals.


For ATVs equipped with an odometer or an hour meter, follow the km (mi) or hours maintenance intervals. How-
ever, keep in mind that if the ATV isn’t used for a long period of time, the month maintenance intervals should be
followed.
_
ITEM ROUTINEWhichever
comes firstINITIAL EVERY
month136612
km
(mi)320
(200)1,200
(750)2,400
(1,500)2,400
(1,500)4,800
(3,000)
hours 20 75 150 150 300
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.U5UH61.book Page 7 Tuesday, April 20, 2004 10:10 AM