torque YAMAHA BRUIN 350 2005 Owners Manual

5-19
EBU01162
Fittings and fasteners
Always check the tightness of chassis fittings and
fasteners before a ride. Take the machine to a
Yamaha dealer or refer to the Service Manual for
correct tightening torque.
EBU01003
Lights
Check the headlights and tail/brake light to make
sure they are in working condition. Repair as nec-
essary for proper operation.
EBU01170
Switches
Check the operation of all switches. Have a
Yamaha dealer repair as necessary for proper op-
eration.
U5UH61.book Page 19 Tuesday, April 20, 2004 10:10 AM

8-3 1. Owner’s manual
2. Owner’s tool kit
3. Low-pressure tire gauge
1. Manuel du propriétaire
2. Trousse à outils du propriétaire
3. Manomètre basse pression pour pneus
1. Manual del propietario
2. Juego de herramientas del propietario
3. Manómetro de baja presión
EBU14520
Owner’s manual and tool kit
You are recommended to put this owner’s manual
in the vinyl bag and always carry it on the bottom
of the seat as shown. Put the owner’s tool kit and
low-pressure tire gauge under the seat.
The service information included in this manual is
intended to provide you, the owner, with the nec-
essary information for completing your own pre-
ventive maintenance and minor repairs. The tools
provided in the Owner’s tool kit are sufficient for
this purpose, except that a torque wrench is also
necessary to properly tighten nuts and bolts.NOTE:_ If you do not have a torque wrench available dur-
ing a service operation requiring one, take your
machine to a Yamaha dealer to check the torque
settings and adjust them as necessary. _
U5UH61.book Page 3 Tuesday, April 20, 2004 10:10 AM

8-27 1. O-ring
1. Joint torique
1. Junta tórica
1. Torque wrench
1. Clé dynamométrique
1. Llave de apriete
5. Apply a light coat of engine oil to the O-ring of
the new oil filter cartridge.NOTE:_ Make sure the O-ring is seated properly. _6. Install the new oil filter cartridge with an oil fil-
ter wrench, and then tighten it to the specified
torque with a torque wrench.
7. Install the engine oil drain bolt, and then tight-
en it to the specified torque. Tightening torque:
Oil filter cartridge:
17 Nm (1.7 m·kgf)
Tightening torque:
Engine oil drain bolt:
23 Nm (2.3 m·kgf)
U5UH61.book Page 27 Tuesday, April 20, 2004 10:10 AM

8-33 1. Final gear case cover 2. Bolt (× 2)
1. Couvercle du carter de transmission finale 2. Boulon (× 2)
1. Cubierta del cárter de la transmisión final 2. Perno (× 2)
4. Install the oil filler bolt, and then tighten it to
the specified torque.
Replacing the final gear oil
1. Remove the final gear case cover by remov-
ing the bolts.
2. Place the ATV on a level surface.
3. Place a container under the final gear case to
collect the used oil. Tightening torque:
Final gear oil filler bolt:
23 Nm (2.3 m·kgf)
U5UH61.book Page 33 Tuesday, April 20, 2004 10:10 AM

8-35 1. Final gear oil drain bolt
1. Boulon de vidange du carter de transmission finale
1. Perno de drenaje del aceite del cárter de la transmisión final
4. Remove the oil filler bolt and the drain bolt to
drain the oil.
5. Install the drain bolt, and then tighten it to the
specified torque.
6. Add the recommended final gear oil to the
brim of the filler hole.CAUTION:_ Be sure no foreign material enters the final
gear case. _
Tightening torque:
Final gear oil drain bolt:
23 Nm (2.3 m·kgf)
Recommended oil:
SAE 80 API GL-4 Hypoid gear oil
Oil quantity:
0.23 L
U5UH61.book Page 35 Tuesday, April 20, 2004 10:10 AM

8-37
7. Install the oil filler bolt, and then tighten it to
the specified torque.
8. Check for oil leakage. If oil leakage is found,
check for the cause.
9. Install the final gear case cover bolts, and
then tighten them to the specified torque. Tightening torque:
Final gear oil filler bolt:
23 Nm (2.3 m·kgf)
Tightening torque:
Final gear case cover bolt:
16 Nm (1.6 m·kgf)
U5UH61.book Page 37 Tuesday, April 20, 2004 10:10 AM

8-39 1. Differential gear oil filler bolt
1. Boulon de l’orifice de remplissage de l’huile de différentiel
1. Perno de relleno de aceite de engranajes del diferencial
1. Differential gear oil drain bolt
1. Boulon de vidange de l’huile de différentiel
1. Perno de drenaje de aceite de engranajes del diferencial
EBU12411
Differential gear oil replacement
1. Place the ATV on a level surface.
2. Place a container under the differential gear
case to collect the used oil.
3. Remove the oil filler bolt and oil drain bolt to
drain the oil.
4. Install the oil drain bolt, and then tighten it to
the specified torque.
Tightening torque:
Differential gear oil drain bolt:
10 Nm (1.0 m·kgf)
U5UH61.book Page 39 Tuesday, April 20, 2004 10:10 AM

8-43
CAUTION:_ Be sure no foreign material enters the differen-
tial gear case. _6. Install the oil filler bolt, and then tighten it to
the specified torque.
7. Check for oil leakage. If oil leakage is found,
check for the cause. Tightening torque:
Differential gear oil filler bolt:
23 Nm (2.3 m·kgf)
U5UH61.book Page 43 Tuesday, April 20, 2004 10:10 AM

8-51 a. Spark plug gap
a.Écartement des électrodes
a. Huelgo de la bujía
Installation
1. Measure the electrode gap with a wire thick-
ness gauge and, if necessary, adjust the gap
to specification.
2. Clean the surface of the spark plug gasket
and its mating surface, and then wipe off any
grime from the spark plug threads.
3. Install the spark plug and tighten it to the
specified torque.NOTE:_ If a torque wrench is not available when you are in-
stalling a spark plug, a good estimate of the correct
torque is 1/4 to 1/2 turn past finger tight. Have the
spark plug tightened to the specified torque as
soon as possible. _4. Install the spark plug cap. Spark plug gap:
0.6–0.7 mm
Tightening torque:
Spark plug:
17.5 Nm (1.75 m·kgf)
U5UH61.book Page 51 Tuesday, April 20, 2004 10:10 AM

8-95 1. Tapered nut
1.Écrou conique
1. Tuerca cónica
1. Arrow mark
1. Flèche
1. Marca en forma
EBU01121
Wheel installation
1. Install the wheel and the nuts.NOTE:_

Tapered nuts are used for both the front and
rear wheels. Install the nut with its tapered
side towards the wheel.


The arrow mark on the tire must point to-
ward the rotating direction of the wheel.
_2. Lower the ATV so that the wheel is on the
ground.
3. Tighten the wheel nuts to the specified
torque.
Wheel nut torque:
Front: 55 Nm (5.5 m·kgf)
Rear: 55 Nm (5.5 m·kgf)
U5UH61.book Page 95 Tuesday, April 20, 2004 10:10 AM