YAMAHA GRIZZLY 125 2010 Owners Manual

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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)

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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)
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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)

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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

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not use engine oil or any other lubricants
for the drive chain, as they may contain
substances that could damage the O-
rings.
[ECB00581]

EBU24901
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-
essary. 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 coldweather. 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.
EBU28702
Checking and lubricating the front and
rear brake levers
The operation of the front and rear brake levers
should be checked before each ride, and the lever
pivots should be lubricated if necessary.
Front brake lever
Recommended lubricant:
Engine oil
Recommended lubricant:
Lithium-soap-based grease

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Rear brake lever

EBU24962
Checking 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.
EBU25032
Lubricating the upper and lower arm
pivots
The upper and lower arm pivots must be lubricated
at the intervals specified in the periodic mainte-nance and lubrication chart.
Lubricate the pivoting points using a grease gun.
Left side
Recommended lubricant:
Lithium-soap-based grease
1. Grease nipple
1
1

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Right side

EBU28822
Lubricating the front knuckle pivots
The front knuckle pivots must be lubricated at the
intervals specified in the periodic maintenance and
lubrication chart.
Lubricate the front knuckle pivots using a grease
gun.
EBU25090
Lubricating the steering shaft
The steering shaft must be lubricated at the inter-
vals specified in the periodic maintenance and lu-
brication chart.
Lubricate the steering shaft using a grease gun.
1. Grease nipple
Recommended lubricant:
Lithium-soap-based grease
1
1

1. Grease nipple
Recommended lubricant:
Lithium-soap-based grease
1

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EBU25122
Battery
A poorly maintained battery will corrode and dis-
charge quickly. The electrolyte level, battery lead
connections and breather hose routing should be
checked before each ride and at the intervals
specified in the periodic maintenance and lubrica-
tion chart.
To check the electrolyte level
1. Place the ATV on a level surface.
2. Check the electrolyte level in the battery.TIP

The electrolyte should be between the minimum
and maximum level marks.
3. If the electrolyte is at or below the minimum
level mark, add distilled water to raise it to the
maximum level mark.
NOTICE:
Use only dis-
tilled water, as tap water contains minerals
that are harmful to the battery.
[ECB00591]

1. Grease nipple
1

1. Battery
2. Battery breather hose
3. Guide
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3

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WARNING

EWB02160
Battery electrolyte is poisonous and danger-
ous, as it contains sulfuric acid, which can
cause severe burns. Avoid contact with skin,
eyes or clothing. Always shield your eyes
when working near batteries.
Antidote:
EXTERNAL: Flush with water.
INTERNAL: Drink large quantities of water or
milk. Follow with milk of magnesia, beaten egg
or vegetable oil. Call a physician immediately.EYES: Flush with water for 15 minutes and get
prompt medical attention.
Batteries produce explosive gases. Keep
sparks, flame, cigarettes or other sources of ig-
nition away. Ventilate when charging or using
in an enclosed space.
KEEP OUT OF REACH OF CHILDREN.
4. Check and, if necessary, tighten the battery
lead connections and correct the breather
hose routing.
To store the battery
If the ATV will not be used for more than one
month, the battery will need to be removed and
stored as follows.
1. Disconnect the negative lead first and then the
positive lead.
NOTICE:
When removing the
battery, the main switch must be off, and
the negative lead must be disconnected
before the positive lead.

[ECB01001]

1. Maximum level mark
2. Minimum level mark
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2. Remove the battery, fully charge it, and then
place it in a cool, dry place.
NOTICE:
Do not
leave or store the battery on its side.
[ECB00601]

3. If the battery will be stored for more than two
months, check the specific gravity of the elec-
trolyte at least once a month and fully charge
the battery whenever necessary.
To install the battery
TIP

Be sure the battery is fully charged.
1. Install the battery.
2. Connect the positive lead first, and then con-
nect the negative lead.
3. Make sure that the breather hose is properly
routed, in good condition, and not obstructed.
NOTICE:
If the breather hose is positioned
in such a way that the frame is exposed to
electrolyte or gas expelled from the bat-
tery, the frame could suffer structural and
external damages.
[ECB00611]

1. Battery
2. Negative battery lead (black)
3. Positive battery lead (red)
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