torque YAMAHA YFM350R 2004 Manuale de Empleo (in Spanish)

4-35 1. Special wrench
1. Clé spéciale
1. Llave especial
A. Spring length
A. Longueur du ressort
A. Longitud del muelle
A
NOTE:_ A special wrench can be obtained at a Yamaha
dealer to make this adjustment. _3. The length of the spring changes 1 mm per
turn of the adjusting nut.
4. Tighten the locknut to the specified torque.Measurement
A:
Installed length:
Standard: 228.5 mm
Minimum (hard): 218.5 mm
Maximum (soft): 233.5 mm
Tightening torque:
42 Nm (4.2 m·kgf)
U5YT60.book Page 35 Friday, December 12, 2003 1:55 PM

4-37
CAUTION:_ Always tighten the locknut against the adjust-
ing nut and tighten it to the specified torque. _
WARNING
_ This shock absorber contains highly pressur-
ized nitrogen gas. If the shock absorber is
damaged, it could explode causing injury or
property damage. Shock absorber cylinder
damage could also result in poor handling
which could cause an accident.

Do not tamper with or attempt to open the
cylinder assembly.


Do not subject the shock absorber to an
open flame or other high heat.


Do not deform or damage the cylinder in
any way.


Do not dispose of a damaged or worn out
shock absorber yourself. Take the unit to
a Yamaha dealer.
_
U5YT60.book Page 37 Friday, December 12, 2003 1:55 PM

5-15
EBU01083
Throttle lever
Check to see that the throttle lever operates cor-
rectly. It must open smoothly and spring back to
the idle position when released. Have a Yamaha
dealer repair as necessary for proper operation.
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.
U5YT60.book Page 15 Friday, December 12, 2003 1:55 PM

8-3 1. Owner’s tool kit
2. Owner’s manual
3. Low-pressure tire gauge
1. Trousse à outils
2. Manuel du propriétaire
3. Manomètre basse pression pour pneus
1. Equipo de herramientas
2. Manual del propietario
3. Manómetro de baja presión
EBU01222
Owner’s manual and tool kit
You are recommended to put this owner’s manual
and low-pressure tire gauge in the vinyl bag and
always carry them along with the owner’s tool kit
under the seat. The service information included in
this manual is intended to provide you, the owner,
with the necessary information for completing your
own preventive maintenance and minor repairs.
The tools provided in the owner’s tool kit are suffi-
cient 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. _
U5YT60.book Page 3 Friday, December 12, 2003 1:55 PM

8-19 1. Engine oil filter cover 2. Bolt (× 3)
3. Engine oil filter element 4. O-ring
1. Couvercle du filtre à huile de moteur 2. Boulon (× 3)
3.Élément du filtre à huile de moteur
4. Joint torique
1. Tapa del filtro de aceite de motor 2. Perno (× 3)
3. Elemento del filtro de aceite de motor
4. Junta tórica
NOTE:_ Skip steps 5–9 if the oil filter element is not being
cleaned. _5. Remove the oil filter cover by removing the
bolts, and then remove the oil filter element.
6. Clean the oil strainer and oil filter element
with solvent.
7. Check the O-ring for damage and replace it if
necessary.
8. Install the oil filter element and O-ring.NOTE:_ Make sure the O-ring is seated properly. _9. Install the oil filter cover by installing the bolts,
and then tighten them to the specified torque.
U5YT60.book Page 19 Friday, December 12, 2003 1:55 PM

8-21
10. Install the oil strainer, compression spring,
O-ring and engine oil drain bolt. Tighten the
engine oil drain bolt to the specified torque.CAUTION:_ Before installing the engine oil drain bolt, be
sure to install the O-ring, compression spring
and oil strainer. _11. Add the specified amount of the recommend-
ed engine oil, and then install and tighten the
engine oil filler cap. Tightening torque:
Oil filter cover bolt:
32 Nm (3.2 m·kgf)
Tightening torque:
Engine oil drain bolt:
10 Nm (1.0 m·kgf)
U5YT60.book Page 21 Friday, December 12, 2003 1:55 PM

8-29 a. Spark plug gap
a.Écartement des électrodes
a. Separación entre electrodos 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)
U5YT60.book Page 29 Friday, December 12, 2003 1:55 PM

8-59 1. Locknut 2. Adjusting nut
1. Contre-écrou 2.Écrou de réglage
1. Contratuerca 2. Tuerca de ajuste
3. Loosen the locknut on the brake cable.
4. Turn the adjusting nut on the brake cable in
direction
a to increase the cable length or in
direction
b to decrease the cable length.NOTE:_ If the cable cannot be adjusted to specification,
consult a Yamaha dealer. _5. Tighten the locknut on the brake cable.
6. Screw in the adjusting bolt at the rear brake
caliper until it feels tight, and then screw it out
1/8 turn. Tighten the locknut to the specified
torque.
Tightening torque:
Locknut:
16 Nm (1.6 m·kgf)
U5YT60.book Page 59 Friday, December 12, 2003 1:55 PM

8-69 1. Upper wheel hub bolt 2. Lower wheel hub bolt
1. Boulon supérieur de moyeu de roue
2. Boulon inférieur de moyeu de roue
1. Perno superior del cubo de la rueda
2. Perno inferior del cubo de la rueda
1. Locknut 2. Adjusting bolt 3. Alignment marks
1. Contre-écrou 2. Boulon de réglage
3. Repères d’alignement
1. Contratuerca 2. Perno de ajuste
3. Marcas de alineación
EBU14990
Drive chain slack adjustment
1. Loosen the rear wheel hub upper and lower
bolts.
2. Loosen the locknuts on each side of the swin-
garm. To tighten the drive chain, turn the ad-
justing bolts in direction
a. To loosen the
drive chain, turn the adjusting bolts in direc-
tion
b and push the wheels forward. Turn
each adjusting bolt exactly the same amount
to maintain correct axle alignment.NOTE:_ There are alignment marks on each side of the
swingarm and on the hub. Use them to check for
proper wheel axle alignment. _3. After adjusting, tighten the locknuts and the
wheel hub bolts to the specified torques.
Tightening torques:
Locknut:
16 Nm (1.6 m·kgf)
Upper wheel hub bolt:
120 Nm (12.0 m·kgf)
Lower wheel hub bolt:
73 Nm (7.3 m·kgf)
U5YT60.book Page 69 Friday, December 12, 2003 1:55 PM

8-85
EBU08710
Wheel installation
When installing the wheel, reverse the removal
procedure.
Tighten the wheel nuts to the specified torques.
Tightening torques:
Wheel nut:
Front: 45 Nm (4.5 m·kgf)
Rear: 45 Nm (4.5 m·kgf)
U5YT60.book Page 85 Friday, December 12, 2003 1:55 PM