2013 YAMAHA YFM350R lock

8-28
8
hold the adjusting bolt with a wrench so
that it does not turn together with the lock-
nut.
[ECB00521]
WARNING
EWB02090Operating with improperly serviced or adjust-
ed brakes could cause the brakes to malfunc-
tion, resulting in reduced braking
performance. This could increase the chance
of a collision or accident. After adjusting the
parking brake free play, block the rear of the
ATV off the ground and spin the rear wheels.
Check to make sure there is no brake drag. If
brake drag is noticed, perform the adjustment
again.EBU24743Brake light switches The brake light, which is activated by the brake
pedal and brake lever, should come on just before
braking takes effect. 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.
Tightening torque:
Locknut (rear brake caliper):16 Nm (1.6 m·kgf, 12 ft·lbf)1. Rear brake light switch
2. Rear brake light switch adjusting nut
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8-29
8The 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).
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 leverin 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).
1. Clutch lever free play
2. Rubber cover
3. Locknut
4. Clutch lever free play adjusting bolt
3
2
4
(a)
(b)
1
1. Locknut
2. Clutch lever free play adjusting nut
3. Rubber cover
2
(a)
(b)
3
1
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8
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.EBU24845Drive chain slack The drive chain slack should be checked before
each ride and adjusted if necessary.
To check the drive chain slack1. 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. 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 bolts.Drive chain slack:
25.0–35.0 mm (0.98–1.38 in)
1. Drive chain slack
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8-31
83. Loosen the locknut on each side of the swing-
arm. To tighten the drive chain, turn the drive
chain slack adjusting 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: Improper 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 occurring, keep the drive chain
slack within the specified limits.
[ECB00542]
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 bolts to the specified torques.
1. Axle holding bolt (upper)
2. Axle holding bolt (lower)
1. Locknut
2. Drive chain slack adjusting bolt
3. Alignment marks
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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 asmall 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 lubri cating 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 bolt (upper): 120 Nm (12 m·kgf, 87 ft·lbf)
Axle holding bolt (lower): 73 Nm (7.3 m·kgf, 53 ft·lbf)1. O-ring
1
1
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8-41
82. Remove the blown fuse, and then install a
new fuse of the specified amperage.
WARNING! Always use a fuse of the spec-
ified rating, and never use a substitute ob-
ject in place of the proper fuse. An
improper fuse or a substitute object can
cause damage to the electrical system,
which could lead to a fire.
[EWB02172]
3. Turn the key to “ON” and turn on the electricalcircuits to check if the devices operate.
4. If the fuse immediately blows again, have a Yamaha dealer check the electrical system.EBU25542Replacing a headlight bulb If a headlight bulb burns out, replace it as follows.1. Remove the headlight bulb holder cover at the rear of the headlight by pulling it off. 2. Remove the headlight bulb holder by pushing
it inward and turning it counterclockwise.
Specified fuse:
15.0 A
1. Headlight bulb holder cover
1. Headlight bulb holder
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8
3. Remove the burnt-out bulb from the headlight
unit by pulling it out.
4. Install a new headlight bulb into the headlight unit by aligning the projection on the bulb with
the groove in the headlight unit. NOTICE: Do
not touch the glass part of the headlight
bulb to keep it free from oil, otherwise the
transparency of the glass, the luminosity
of the bulb, and the bulb life will be ad-
versely affected. Thoroughly clean off any
dirt and fingerprints on the headlight bulb
using a cloth moistened with alcohol or
thinner.
[ECB00651]
5. Install the headlight bulb holder by aligning the projections with the holes in the headlight unit,
pushing it inward, and turning it clockwise until
it stops.
6. Install the headlight bulb holder cover at the rear of the headlight. NOTICE: Make sure the
headlight bulb holder cover is securely fit-
ted over the bulb holder and seated prop-
erly.
[ECB00671]
7. Adjust the headlight beam if necessary.
1. Do not touch the glass part of the bulb.U1BS63E0.book Page 42 Tuesday, March 13, 2012 11:43 AM

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8
EBU25551Adjusting a headlight beam NOTICEECB00690It is advisable to have a Yamaha dealer make
this adjustment.To raise a headlight beam, turn the headlight beam
adjusting screw in direction (a).
To lower a headlight beam, turn the adjusting
screw in direction (b).
EBU25601Replacing the tail/brake light bulb If the tail/brake light bulb burns out, replace it as
follows.1. Remove the lens by removing the screws.
2. Remove the burnt-out bulb by pushing it in and turning it counterclockwise.
1. Headlight beam adjusting screw
1. Screw
U1BS63E0.book Page 43 Tuesday, March 13, 2012 11:43 AM