2010 YAMAHA GRIZZLY 125 Owners Manual

8-28
1
2
3
4
5
6
78
9
10
11

2. Remove the panel shown by removing the
quick fasteners, then disconnect the coupler
shown.
1. Front carrier
2. Bolt
1
22
2

1. Panel
2. Quick fastener122
1

8-29
1
2
3
4
5
6
78
9
10
11

3. Remove the V-belt air filter element cover by
removing the screw.4. Loosen the locknut and fully turn in the adjust-
ing bolt at the brake lever.
1. Panel
2. Coupler
1
2

1. V-belt air filter element cover
2. Screw
12

8-30
1
2
3
4
5
6
78
9
10
11

5. Make sure the brake cable joint in the equaliz-
er is straight when the brake is applied. If the
cable joint isn’t straight, loosen the locknuts,
and then turn the adjusting nuts on the front
brake cables until the cable joint becomes
straight.
1. Locknut
2. Brake lever free play adjusting bolt
1
2

1. Brake equalizer
2. Cable jointaa'
a=a'
1 2

8-31
1
2
3
4
5
6
78
9
10
11

6. Tighten the locknut on each brake cable.
7. Turn the adjusting bolt in direction (a) to in-
crease the free play, and in direction (b) to de-
crease it.8. Tighten the locknut at the brake lever.
9. Install the V-belt air filter element cover by in-
stalling the screw.
10. Connect the coupler, and then install the pan-
el by installing the quick fasteners.
11. Install the front carrier by installing the bolts.
EBU24492
Adjusting the rear brake lever free play
The brake lever free play must be checked and, if
necessary, adjusted at the intervals specified in
1. Locknut
2. Adjusting nut
12 2
1

1. Locknut
2. Brake lever free play adjusting bolt
3. Brake lever free play
3
1
2
(b)
(a)

8-32
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2
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78
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the periodic maintenance and lubrication chart.
TIP

Before adjusting the brake lever free play, check
the rear brake shoes for wear.
The brake lever free play should measure 5.0–8.0
mm (0.20–0.31 in) as shown. If the free play is in-
correct, adjust it as follows.
Turn the brake lever free play adjusting nut on the
rear wheel hub in direction (a) to increase the free
play, and in direction (b) to decrease it.
If the correct free play cannot be obtained, have a
Yamaha dealer adjust it.
EBU24873
Drive 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.
TIP

When checking and adjusting the drive chain
slack, there should be no weight on the ATV and
all tires must be touching the ground.
1. Brake lever free play
1

1. Brake lever free play adjusting nut
1
(a)
(b)

8-33
1
2
3
4
5
6
78
9
10
11

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 hub stopper bolt locknut and thenthe hub stopper bolt.
3. Loosen the axle holding bolts.
4. Loosen the chain adjusting bolt locknut. To
tighten the drive chain, turn the adjusting bolt
in direction (a). To loosen the drive chain, turn
the adjusting bolt in direction (b), and then
push the wheels forward.
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 break-
Drive chain slack:
30.0 mm (1.18 in)

1. Drive chain slack
1

1. Hub stopper bolt
2. Locknut
3. Axle holding bolt (lower)
4. Axle holding bolt (upper)
1
2
34

8-34
1
2
3
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78
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age. To prevent this from occurring, keep
the drive chain slack within the specified
limits.
[ECB00542]

5. Tighten the locknut and the axle holding bolts
to the specified torques.NOTICE
ECB00550
If measurement “A” of the drive chain adjust-
ing bolt is less than 27 mm (1.06 in), have a
Yamaha dealer replace the drive chain.
1. Locknut
2. Drive chain slack adjusting bolt
1
2
(a)
(b)

Tightening torques:
Chain adjusting bolt locknut:
15.5 Nm (1.6 m·kgf, 11.2 ft·lbf)
Axle holding bolt (upper):
85 Nm (8.5 m·kgf, 61.5 ft·lbf)
Axle holding bolt (lower):
60 Nm (6.0 m·kgf, 43.4 ft·lbf)

8-35
1
2
3
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5
6
78
9
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6. Tighten the hub stopper bolt, and then its lock-
nut.
EBU24881
Lubricating 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.NOTICE
ECB00560
The drive chain must be lubricated after wash-
ing the ATV or riding in the rain.
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
1. Measurement A
1

1. O-ring
1