2006 YAMAHA BRUIN 250 oil filter

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
Shifting ................................................6-15
To start out and accelerate .................6-17
To decelerate ......................................6-19
Engine break-in ...................................6-21
Parking ...............................................6-23
Parking on a slope ..............................6-25
Accessories and loading ....................6-27
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 ................................7-41
Climbing uphill.....................................7-47
Riding downhill ....................................7-57
Crossing a slope .................................7-61
Crossing through shallow water ..........7-65
Riding over rough terrain ....................7-71
Sliding and skidding ............................7-73
What to do if ........................................7-77
What to do...........................................7-77
67
PERIODIC MAINTENANCE AND
ADJUSTMENT ......................................... 8-1
Owner’s manual and tool kit ................. 8-3
Periodic maintenance/lubrication.......... 8-7
Engine oil and oil filter element........... 8-17
Final gear oil ....................................... 8-31
Spark plug inspection ......................... 8-37
Air filter element cleaning ................... 8-43
Carburetor adjustment ....................... 8-49
Idle speed adjustment ........................ 8-51
Valve clearance adjustment .............. 8-53
Throttle lever adjustment ................... 8-53
Select lever safety system cable
adjustment ........................................ 8-55
Front brake pad check ........................ 8-55
Rear brake shoe inspection ............... 8-57
Brake fluid level check ........................ 8-59
Brake fluid replacement ...................... 8-61
Front brake lever free play.................. 8-63
Adjusting the brake pedal and rear
brake lever........................................ 8-65
Adjusting the rear brake light switch ... 8-73
Clutch adjustment ............................... 8-75
Cable inspection and lubrication......... 8-77
Brake lever and brake pedal
lubrication ........................................ 8-79
Steering shaft lubrication .................... 8-81
8
EE.book Page 2 Friday, May 27, 2005 5:00 PM

3-1
EBU00032
1-DESCRIPTION AND MACHINE
IDENTIFICATION1. Storage compartment
2. Air filter case
3. Engine oil dipstick
4. Front brake fluid reservoir
5. Brake pedal
6. Clutch adjusting bolt
7. Engine oil filter element
8. Rear brake light switch
9. Headlight
10. Fuel cock
11. Recoil starter
12. Fuses
13. Battery
14. Tail/brake light15. Rear shock absorber
spring preload adjusting
ring
16. Engine oil drain bolt
17. Shift pedal
18. Rear brake lever
19. Handlebar switches
20. Parking brake
21. Horn switch
22. Starter (choke)
23. Drive select lever
24. Main switch
25. Fuel tank cap
26. Throttle lever
27. Front brake leverNOTE:The machine you have purchased may differ
slightly from those shown in the figures of this
manual.
EE.book Page 1 Friday, May 27, 2005 5:00 PM

8-8
Engine oil
Replace (Warm engine before draining).Engine oil filter element
Clean.Engine oil strainer
Clean.Final gear oilCheck oil level/oil leakage.
Replace.Front brake*Check operation/fluid leakage/see NOTE page 8-9.
Correct if necessary.Rear brake*Check operation.
Adjust if necessary.Select lever safety
system cable*Check operation.
Adjust if necessary.Clutch*Check operation.
Adjust if necessary.Wheels*Check balance/damage/runout.
Repair if necessary.Wheel bearings*Check bearing assemblies for looseness/damage.
Replace if damaged.Front and rear
suspension*Check operation.
Correct if necessary.Steering system*Check operation/Replace if damaged.
Check toe-in/Adjust if necessary.Steering shaft*Lubricate every 6 months with lithium-soap-based grease
(all-purpose grease).Fittings and fasteners*Check all chassis fittings and fasteners.
Correct if necessary.
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
EE.book Page 8 Friday, May 27, 2005 5:00 PM

8-17 1. Engine oil filler cap
2. Dipstick
3. Maximum level mark
4. Minimum level mark
1. Bouchon de remplissage d’huile de moteur
2. Jauge
3. Repère de niveau maximum
4. Repère de niveau minimum
1. Tapa del filtro de aceite de motor
2. Varilla de nivel de aceite
3. Marca de nivel máximo
4. Marca de nivel mínimo
EBU11005
Engine oil and oil filter element
The engine oil level should be checked before
each ride. In addition, the oil must be changed and
the oil filter element cleaned at the intervals speci-
fied in the periodic maintenance and lubrication
chart.
To check the engine oil level
1. Place the ATV on a level surface.
2. Warm up the engine for several minutes, and
then turn it off.
3. Wait at least ten minutes until the oil level set-
tles before checking.
4. Remove the engine oil filler cap, and then
wipe the dipstick off with a clean rag. Insert
the dipstick in the filler hole (without screwing
it in), and then remove it again to check the oil
level.NOTE:_

Be sure to wait at least ten minutes until the
oil level settles before checking.


The oil level should be between the minimum
and maximum level marks.
_
EE.book Page 17 Friday, May 27, 2005 5:00 PM

8-21 1. Footboard 2. Bolt (× 8)
1. Repose-pied 2. Boulon (× 8)
1. Plataforma para los pies 2. Perno (× 8)
1. Adjusting nut (brake rod)
1.Écrou de réglage (tringle de frein)
1. Tuerca de ajuste (barra del freno)
CAUTION:_ When removing the engine oil drain bolt, the
compression spring, oil strainer and O-ring
will fall out. Take care not to lose these parts. _NOTE:_ Skip steps 5–11 if the oil filter element is not being
cleaned. _5. Remove the footboard by removing the bolts.
6. Fully loosen the brake pedal free play adjust-
ing nut, push the brake pedal downward, and
then remove the oil filter element cover bolts.
EE.book Page 21 Friday, May 27, 2005 5:00 PM

8-23 1. Oil filter element cover 2. Adjusting nut (× 3)
1. Couvercle de l’élément du filtre à huile
2.Écrou de réglage (× 3)
1. Cubierta del elemento del filtro de aceite
2. Tuerca de ajuste (× 3)
1. Engine oil filter element 2. O-ring
1.Élément du filtre à huile de moteur 2. Joint torique
1. Elemento del filtro de aceite de motor
2. Junta tórica
7. Remove the oil filter element cover and oil fil-
ter element.NOTE:_ To remove or install the oil filter element cover and
oil filter element, move the select lever safety sys-
tem cable away from the cover. _CAUTION:_ Do not loosen the adjusting nuts shown when
removing the oil filter element cover or oil filter
element. _8. Clean the oil strainer and oil filter element
with solvent.
9. Check the O-ring for damage and replace it if
necessary.NOTE:_ Make sure the O-ring is seated properly. _
EE.book Page 23 Friday, May 27, 2005 5:00 PM

8-25
10. Install the oil filter element.
11. Install the oil filter element cover by installing
the bolts, and then tightening them to the
specified torque.
12. Install the oil strainer, compression spring,
O-ring and engine oil drain bolt, and then
tighten the engine oil drain bolt to the speci-
fied torque.CAUTION:_ Before installing the engine oil drain bolt, be
sure to install the O-ring, compression spring
and oil strainer. _
Tightening torque:
Oil filter element cover bolt:
10 Nm (1.0 m·kgf)
Tightening torque:
Engine oil drain bolt:
43 Nm (4.3 m·kgf)
EE.book Page 25 Friday, May 27, 2005 5:00 PM

8-27
13. Add the specified amount of the recommend-
ed engine oil, then install and tighten the en-
gine oil filler cap.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:
See page 10-2.
Oil quantity:
Without oil filter element removal:
1.50 L
With oil filter element removal:
1.60 L
EE.book Page 27 Friday, May 27, 2005 5:00 PM