2011 YAMAHA GRIZZLY 125 belt

RIDING YOUR ATV ...................................... 7-1
GETTING TO KNOW YOUR ATV.............. 7-2
RIDE WITH CARE AND GOOD
JUDGMENT ............................................. 7-2
BE CAREFUL WHERE YOU RIDE ............ 7-9
TURNING YOUR ATV ............................. 7-12
CLIMBING UPHILL .................................. 7-13
RIDING DOWNHILL................................. 7-16
CROSSING A SLOPE.............................. 7-17
CROSSING THROUGH SHALLOW
WATER ..................................................7-18
RIDING OVER ROUGH TERRAIN .......... 7-20
SLIDING AND SKIDDING ........................ 7-20
WHAT TO DO IF... ................................... 7-21
WHAT TO DO... ....................................... 7-21
PERIODIC MAINTENANCE AND
ADJUSTMENT ............................................... 8-1
Owner’s manual and tool kit ...................... 8-1
Periodic maintenance chart for the
emission control system .......................... 8-3
General maintenance and lubrication
chart ........................................................ 8-5
Checking the spark plug ............................ 8-8
Engine oil .................................................. 8-9
Transmission oil ...................................... 8-12
Cleaning the engine and V-belt case air
filter elements ........................................ 8-15
Cleaning the spark arrester ..................... 8-21V-belt case drain screw ........................... 8-23
Adjusting the carburetor ........................... 8-24
Adjusting the engine idling speed ............ 8-24
Adjusting the throttle cable free play ........ 8-25
Valve clearance ....................................... 8-26
Brakes ...................................................... 8-26
Checking the front and rear brake
shoes .....................................................8-26
Adjusting the front brake lever free
play ........................................................8-27
Adjusting the rear brake lever free
play ........................................................ 8-32
Drive chain slack ...................................... 8-33
Lubricating the drive chain ....................... 8-35
Checking and lubricating the cables ........ 8-36
Checking and lubricating the front and
rear brake levers ....................................8-36
Checking the wheel hub bearings ............ 8-37
Lubricating the upper and lower arm
pivots ....................................................8-38
Lubricating the front knuckle pivots ......... 8-39
Lubricating the steering shaft ................... 8-39
Battery ..................................................... 8-40
Replacing the fuse ................................... 8-43
Replacing a headlight bulb ...................... 8-44
Adjusting a headlight beam ..................... 8-46
Replacing the tail/brake light bulb ............ 8-46
Removing a wheel ................................... 8-47
Installing a wheel ..................................... 8-47

7-19
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67
8
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of control.
[EWB02621]
After riding your ATV in water, be sure to drain the
trapped water by removing the check hose at the
bottom of the air filter case. Also, remove the V-belt
case drain screw to drain any water that may have
accumulated.
NOTICE:
Undrained water can
cause damage or improper operation.
[ECB00841]
Wash the ATV in fresh water if it has been operat-
ed in salt water or muddy conditions.
1. Air filter case check hose
1. V-belt case drain screw
1
1

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

EBU21865
General maintenance and lubrication chart
TIP


For ATVs not equipped with an odometer or an hour meter, follow the month maintenance intervals.

For ATVs equipped with an odometer or an hour meter, follow the km (mi) or hours maintenance inter-
vals. However, keep in mind that if the ATV isn’t used for a long period of time, the month maintenance
intervals should be followed.

Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools,
data and technical skills.
NO. ITEMCHECK OR MAINTENANCE
JOBINITIAL EVERY
Whichev-
er comes
firstmonth 1 3 6 6 12
km
(mi)320
(200)1300
(800)2500
(1600)2500
(1600)5000
(3200)
hours 20 80 160 160 3201Engine and V-belt
case air filter ele-
ment


Clean and replace if necessary.Every 20–40 hours (more often in wet or
dusty areas)
2
*
Front brake

Check operation and correct if necessary.

Check brake lever free play and adjust if neces-
sary.
√√√√√

Replace brake shoes. Whenever worn to the limit
3
*
Rear brake

Check operation and correct if necessary.

Check brake lever free play and adjust if neces-
sary.
√√√√√

Replace brake shoes. Whenever worn to the limit
4
*
Wheels

Check runout and for damage, and replace if nec-
essary.
√ √√√

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

5
*
Tires

Check tread depth and for damage, and replace if
necessary.

Check air pressure and balance, and correct if
necessary.
√ √√√
6
*
Wheel hub bearings


Check for looseness or damage, and replace if
necessary.
√ √√√
7
*
Upper and lower
arm pivots


Lubricate with lithium-soap-based grease.
√√√
8 Drive chain

Check chain slack and adjust if necessary.

Check rear wheel alignment and correct if neces-
sary.

Clean and lubricate.
√√√√√
9
*
V-belt


Check for wear, cracks or other damage, and
replace if necessary.
√√
10
*
Chassis fasteners


Make sure that all nuts, bolts, and screws are
properly tightened.
√√√√√
11
*
Shock absorber
assemblies


Check operation and correct if necessary.

Check for oil leakage and replace if necessary.
√√√
12
*
Front knuckle piv-
ots


Lubricate with lithium-soap-based grease.
√√√
13
*
Steering shaft


Lubricate with lithium-soap-based grease.
√√√
14
*
Steering system


Check operation and repair or replace if damaged.

Check toe-in and adjust if necessary.
√√√√√
15 Engine oil

Change.

Check ATV for oil leakage, and correct if necessary.
√ √√√
NO. ITEMCHECK OR MAINTENANCE
JOBINITIAL EVERY
Whichev-
er comes
firstmonth136612
km
(mi)320
(200)1300
(800)2500
(1600)2500
(1600)5000
(3200)
hours 20 80 160 160 320

8-15
1
2
3
4
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6
78
9
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11

7. Check the oil filler bolt gasket for damage, and
replace it if necessary.
8. Install the oil filler bolt and its gasket, and then
tighten the bolt to the specified torque.
NOTICE

ECB01061
Make sure that no oil gets on the tires or
wheels.
9. Start the engine, and then let it idle for several
minutes while checking the transmission for
oil leakage. If oil is leaking, immediately turn
off the engine and check for the cause.
10. Turn the engine off, and then check the oil lev-
el and correct it if necessary.
EBU23846
Cleaning the engine and V-belt case air
filter elements
Both air filter elements should be cleaned at the
specified intervals in the periodic maintenance
chart.
Engine air filter element
TIP

There is a check hose at the bottom of the air filter
case. If dust or water collects in this hose, empty
the hose and clean the air filter element and air fil-
ter case. Recommended transmission oil:
See page 10-1.
Oil quantity:
0.6 L (0.63 US qt, 0.53 Imp.qt)
Tightening torque:
Transmission oil filler bolt:
23 Nm (2.3 m·kgf, 17 ft·lbf)
1. Air filter case check hose
1

8-18
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6
78
9
10
11

13. Install the air filter element into the air filter
case.
NOTICE:
Make sure that the air filter
element is properly seated in the air filter
case. Never operate the engine with the air
filter element removed. This will allow un-
filtered air to enter the engine, causing rap-
id engine wear and possible engine
damage. Additionally, operation without
the air filter element will affect carburetor
jetting with subsequent poor performance
and possible engine overheating.
[ECB00461]

14. Connect the air filter case cover to the air filter
joint.15. Install the air filter case cover by installing the
screws, and then tighten the air filter joint
screw.
16. Install the breather hose.
17. Install the seat.TIP
The air filter element should be cleaned every 20–
40 hours. It should be cleaned and lubricated more
often if the ATV is operated in extremely dusty ar-
eas. Each time the air filter element maintenance
is performed, check the air inlet of the air filter case
for obstructions. Check the air filter case rubber
joint to the carburetor fittings and the rubber joint
manifold fittings for an air-tight seal. Tighten all fit-
tings securely to avoid the possibility of unfiltered
air entering the engine.
V-belt case air filter element
1. Place the ATV on a level surface.
2. Remove the front carrier by removing the
bolts.
1. Washer
1

8-23
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78
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WARNING

EWB02340
Do not start the engine when cleaning the
spark arrester, otherwise it could cause injury
to the eyes, burns, carbon monoxide poison-
ing, possibly leading to death, and start a fire.
Always let the exhaust system cool prior to
touching exhaust components.
EBU30060
V-belt case drain screw
After riding in water deep enough to allow it to en-
ter the V-belt case, remove this screw to drain the
water from the case.
TIP

If water drains from the V-belt case after removing
the screw, have a Yamaha dealer check the ATV
as the water may affect other engine parts.
To drain the water from the V-belt case
1. Place the ATV on a level surface.
2. Place a container under the V-belt case, and
then remove the V-belt case drain screw and
its gasket to drain the water from the V-belt
case.
3. Install the V-belt case drain screw and its new
gasket, and then tighten the screw to the
specified torque.
1. V-belt case drain screw
2. Gasket
1
12

8-24
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78
9
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11

EBU23940
Adjusting the carburetor
The carburetor should be checked and, if neces-
sary, adjusted at the intervals specified in the peri-
odic maintenance and lubrication chart. The
carburetor is an important part of the engine and
requires very sophisticated adjustment. Therefore,
most carburetor adjustments should be left to a
Yamaha dealer, who has the necessary profes-
sional knowledge and experience. The adjustment
described in the following section, however, may
be performed by the owner as part of routine main-
tenance.
NOTICE

ECB00480
The carburetor has been set and extensively
tested at the Yamaha factory. Changing these
settings without sufficient technical knowl-
edge may result in poor performance of or
damage to the engine.
EBU24000
Adjusting the engine idling speed
The engine idling speed must be checked and, if
necessary, adjusted as follows at the intervals
specified in the periodic maintenance and lubrica-
tion chart.
TIP

A diagnostic tachometer is needed to make this
adjustment.
1. Start the engine and warm it up.
TIP

The engine is warm when it quickly responds to the
throttle.
2. Attach the tachometer to the spark plug lead.
3. Check the engine idling speed and, if neces-
sary, adjust it to specification by turning the
throttle stop screw at the carburetor. To in-
crease the engine idling speed, turn the throt-
tle stop screw in direction (a), and to decrease
it, turn the screw in direction (b). Tightening torque:
V-belt case drain screw:
7 Nm (0.7 m·kgf, 5.1 ft·lbf)