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q
w
ab
A
1. Locknut 2. Adjusting ring
a. Increase b. Decrease1. Contre-écrou 2. Anneau de réglage
a. Augmenter b. Reduirer1. Contratuerca 2. Ajustador
a. Aumento b. Diminución
A. Spring lengthA. Longueur du ressortA. Longitud del resorte
4-29
Adjust the spring preload as follows.
1. Loosen the locknut.
2. Turn the adjusting ring in direction ato
increase the spring preload and in direction
bto the decrease spring preload.
3. The length of the spring (installed) changes
1 mm (0.04 in) per turn of the adjuster.
4. Tighten the locknut to the specified torque.
Tightening torque:
54 Nm (5.4 m0kg)Installed length: Measurement “A”
Minimum (hard): 213.5 mm
Standard: 220.5 mm
Maximum (soft): 228.5 mm
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4-31
cCAlways tighten the locknut against the spring
adjusting ring, then torque it to specification.Adjust the rebound damping force as fol-
lows.
Turn the rebound damping adjuster in direction
ato increase the rebound damping force and in
direction bto decrease the rebound damping
force.
q
b
a
1. Rebound damping adjuster
a. Increase rebound damping
b. Decrease rebound damping1. Dispositif de réglage d’amortissement de la détente
a. Augmenter l’amortissement de la détente
b. Diminuer l’amortissement de la détente 1. Ajustador de la fuerza de amortiguación a rebote
a. Aumentar la fuerza de amortiguación a rebote
b. Reducir la fuerza de amortiguación a rebote
From the fully turned-in position
Minimum (soft): 20 clicks out
Standard: 12 clicks out
Maximum (hard): 3 clicks out
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5-19
EBU00498Chain
Check the general condition of the chain and
check the chain slack before every ride. Lubri-
cate and adjust the chain as necessary. (See
pages 8-91 ~ 8-97 for details.)EBU00151Throttle lever
Check to see that the throttle lever operates cor-
rectly. It must open smoothly and spring back to
idle position when released. Repair as neces-
sary for proper operation.EBU00152Fittings 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.
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Page 240 of 389

8-3
EBU00258Owner’s manual and tool kit
You are recommended to put this owner’s man-
ual 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 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
during a service operation requiring one, take
your machine to a Yamaha dealer to check the
torque settings and adjust them as necessary.
q
we
1. Owner’s manual
2. Low-pressure tire gauge
3. Tool kit1. Manuel du propriétaire
2. Manomètre basse pression pour pneus
3. Trousse à outils1. Manual del propietario
2. Manómetro de baja presión
3. Juego de herramientas
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8-19
Transmission oil replacement
1. Place the machine on a level place.
2. Warm up the engine for several minutes
and then stop it.
3. Place a container under the engine.
4. Remove the dipstick and drain bolt to drain
the oil.
5. Install the drain bolt and then tighten it to
the specified torque.
6. Fill the engine with oil and install the dip-
stick.
q
1. Drain bolt1. Boulon de vidange1. Perno de vaciado
Tightening torque:
Drain bolt:
20 Nm (2.0 m0kg)
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8-33
6. Disconnect the hose on the coolant reser-
voir side and drain the coolant from the
coolant reservoir.
7. After draining the coolant, thoroughly flush
the cooling system with clean tap water.
8. Replace the coolant drain bolt washers if
they are damaged, and then tighten the
coolant drain bolts to the specified torque.
9. Install the coolant reservoir hose.
10. Pour the recommended coolant into the
radiator until it is full.
q
w
1. Coolant reservoir hose
2. Coolant reservoir1. Flexible du vase d’expansion
2. Vase d’expansion1. Manguera del depósito de refrigerante
2. Depósito de refrigerante
Tightening torque
Coolant drain bolt:
14 Nm (1.4 m0kg)
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8-41
Before installing a spark plug, measure the elec-
trode gap with a feeler gauge and adjust to
specification.
When installing a spark plug, always clean the
gasket surface and use a new gasket. Wipe off
any grime from the threads and tighten to the
specified torque.
a
a. Spark plug gapa. Écartement des électrodesa. Separación entre electrodos de la bujía
Spark plug gap:
0.7 ~ 0.8 mm Tightening torque:
Spark plug:
20 Nm (2.0 m0kg)Standard spark plug:
BR8ES (NGK)
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8-63
Assembly
1. Reassemble the needle valves, floats and
float chambers.
2. Install the carburetors.
3. Reassemble the throttle valves.
4. Install the carburetor caps and tighten
them securely to the specified torque.
5.
Install the securing plates. Match one of the
projections on the carburetor cap with one of
the indents on the securing plate.
cCIf the securing plate does not match a pro-
jection, tighten the carburetor cap until they
align. Do not loosen.
6. Tighten the securing plate screw to the
specified torque.
1. Securing plate1. Plaque de fixation1. Placa de seguridad
Carburetor cap tightening torque:
4 Nm (0.4 m0kg)Tightening torque:
3.5 Nm (0.35 m0kg)
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