2012 YAMAHA YFM350R-W Owners Manual

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8 The brake light switch for the brake pedal can be
adjusted as follows, but the front brake light switch
should be adjusted by a Yamaha dealer.
Turn the rear brake light switch adjusting nut while
holding the brake light switch in place. To make the
brake light come on earlier, turn the adjusting nut
in direction (a). To make the brake light come on
later, turn the adjusting nut in direction (b).
EBU30120Adjusting the clutch lever free play The clutch lever free play must be checked and, if
necessary, adjusted at the intervals specified in the
periodic maintenance and lubrication chart.The clutch lever free play should measure 5.0–
10.0 mm (0.20–0.39 in) as shown. If the free play
is incorrect, adjust it as follows.
1. Slide the rubber cover back at the clutch lever.
2. Loosen the locknut.
3. To increase the clutch lever free play, turn the
adjusting bolt at the clutch lever in direction
(a), and to decrease it, turn the bolt in direction
(b).1. Rear brake light switch
2. Rear brake light switch adjusting nut
1. Clutch lever free play
2. Rubber cover
3. Locknut
4. Clutch lever free play adjusting bolt
3 2
4 (a) (b)
1
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8
TIPIf the specified clutch lever free play could be ob-
tained as described above, skip steps 4–8.4. Fully turn the adjusting bolt at the clutch lever
in direction (a) to loosen the clutch cable.
5. Slide the rubber cover back at the crankcase.
6. Loosen the locknut.
7. To increase the clutch lever free play, turn the
adjusting nut at the crankcase in direction (a),
and to decrease it, turn the nut in direction (b).8. Tighten the locknut at the crankcase, and then
slide the rubber cover to its original position.
9. Tighten the locknut at the clutch lever, and
then slide the rubber cover to its original posi-
tion.
TIPIf the specified free play cannot be obtained as de-
scribed above or if the clutch does not operate cor-
rectly, have a Yamaha dealer check the internal
clutch mechanism.EBU28144Drive chain slack The drive chain slack should be checked before
each ride and adjusted if necessary.
To check the drive chain slack
1. Place the ATV on a level surface.TIPWhen checking and adjusting the drive chain
slack, there should be no weight on the ATV and
all tires must be touching the ground.2. Move the ATV back and forth to locate the
tightest portion of the drive chain, and then
measure the drive chain slack as shown.
1. Locknut
2. Clutch lever free play adjusting nut
3. Rubber cover
2
(a)
(b)
3
1
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8
3. If the drive chain slack is incorrect, adjust it as
follows.
To adjust the drive chain slack
1. Place the ATV on a level surface.
2. Loosen the axle holding nuts.3. Loosen the locknut on each side of the swing-
arm. To tighten the drive chain, turn the ad-
justing bolts in direction (a). To loosen the
drive chain, turn the adjusting bolts in direction
(b) and push the wheels forward. Turn each
adjusting bolt exactly the same amount to
maintain correct axle alignment. NOTICE: Im-
proper drive chain slack will overload the
engine as well as other vital parts of the
ATV and can lead to drive chain slippage
or breakage. To prevent this from occur-
ring, keep the drive chain slack within the
specified limits.
[ECB00542]
Drive chain slack:
25.0–35.0 mm (0.98–1.38 in)1. Drive chain slack
1. Axle holding bolt (upper)
2. Axle holding bolt (lower)
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8
TIPThere are alignment marks on both drive chain
pullers and an alignment mark on each side of the
swingarm. Make sure to align the same alignment
mark on both drive chain pullers with the alignment
mark on either side of the swingarm for proper
wheel alignment.4. Tighten the locknuts and the axle holding nuts
to the specified torques.
TIPMake sure that the curved edge of the speed sen-
sor bracket touches the rear wheel hub when tight-
ening the axle holding nuts.
1. Locknut
2. Drive chain slack adjusting bolt
3. Alignment marks
1. Speed sensor bracket
2. Rear wheel hub
3. Curved edge
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8
EBU24882Lubricating the drive chain The drive chain must be cleaned and lubricated at
the intervals specified in the periodic maintenance
and lubrication chart, otherwise it will quickly wear
out, especially when riding in dusty or wet areas.
Service the drive chain as follows.NOTICEECB00561The drive chain must be lubricated after wash-
ing the ATV or riding in the rain or wet areas.1. Clean the drive chain with kerosene and a
small soft brush. NOTICE: To prevent dam-
aging the O-rings, do not clean the drive
chain with steam cleaners, high-pressure
washers or inappropriate solvents.
[ECB00571]
2. Wipe the drive chain dry.
3. Thoroughly lubricate the drive chain with a
special O-ring chain lubricant. NOTICE: Do
not use engine oil or any other lubricants
for the drive chain, as they may contain
substances that could damage the O-
rings.
[ECB00581]
EBU24902
Checking and lubricating the cables The operation and the condition of all control ca-
bles should be checked before each ride, and the
cables and cable ends should be lubricated if nec- Tightening torques:
Locknut:
16 Nm (1.6 m·kgf, 12 ft·lbf)
Axle holding nut (upper):
120 Nm (12 m·kgf, 87 ft·lbf)
Axle holding nut (lower):
73 Nm (7.3 m·kgf, 53 ft·lbf)1. O-ring
1 1
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8essary. If a cable is damaged or does not move
smoothly, have a Yamaha dealer check or replace
it.
WARNING
EWB02581
Inspect cables frequently and replace if dam-
aged. Corrosion can result when the cable
sheaths become damaged, and cables can
also become frayed or kinked, which could
restrict the operation of controls and lead to
an accident or injury.
Always make sure all control cables work
smoothly before you begin riding in cold
weather. If the control cables are frozen or do
not work smoothly, you could be unable to
control the ATV, which could lead to an acci-
dent or collision.
EBU24922Checking and lubricating the brake and
clutch levers The operation of the brake and clutch levers
should be checked before each ride, and the lever
pivots should be lubricated if necessary.
Brake lever Recommended lubricant:
Yamaha Chain and Cable Lube or engine oilRecommended lubricants:
Brake lever:
Silicone grease
Clutch lever:
Lithium-soap-based grease
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8 Clutch lever
EBU28841Checking and lubricating the brake and
shift pedals The operation of the brake and shift pedals should
be checked before each ride, and the pedal pivots
should be lubricated if necessary.Brake pedal
Shift pedal
Recommended lubricant:
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8
EBU24963Checking the wheel hub bearings The front and rear wheel hub bearings must be
checked at the intervals specified in the periodic
maintenance and lubrication chart. If there is play
in a wheel hub or if a wheel does not turn smoothly,
have a Yamaha dealer check the wheel hub bear-
ings.EBU24995Lubricating the swingarm pivots The swingarm pivots must be lubricated by a
Yamaha dealer at the intervals specified in the pe-
riodic maintenance and lubrication chart.
EBU25004Lubricating the rear suspension relay
arm and connecting arm pivoting
points The rear suspension relay arm and connecting
arm pivoting points must be lubricated at the inter-
vals specified in the periodic maintenance and lu-
brication chart.TIPFor parts equipped with a grease nipple, use a
grease gun.Recommended lubricant:
Lithium-soap-based grease
Recommended lubricant:
Lithium-soap-based grease
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