2010 YAMAHA GRIZZLY 125 air filter

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 plug .............................. 8-23
Adjusting the carburetor ........................... 8-23
Adjusting the engine idling speed ............ 8-23
Adjusting the throttle cable free play ........ 8-24
Valve clearance ....................................... 8-25
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 ........................................................8-31
Drive chain slack ...................................... 8-32
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 .....................................................8-37
Lubricating the front knuckle pivots ......... 8-38
Lubricating the steering shaft ................... 8-38
Battery ..................................................... 8-39
Replacing the fuse ................................... 8-42
Replacing a headlight bulb ...................... 8-43
Adjusting a headlight beam ..................... 8-45
Replacing the tail/brake light bulb ............ 8-45
Removing a wheel ................................... 8-46
Installing a wheel ..................................... 8-46

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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 plug 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 plug
1
1

8-15
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oil leakage. If oil is leaking, immediately turn
off the engine and check for the cause.
8. Turn the engine off, and then check the oil lev-
el and correct it if necessary.
EBU23843
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.1. Place the ATV on a level surface.
2. Remove the seat. (See page 4-10.)
3. Remove the breather hose, and then loosen
the clamp screw.
1. Check hose
1

8-16
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4. Remove the air filter case cover by removing
the screws.5. Pull the air filter element out of the air filter
case.
6. Remove the bolt and washer shown, and then
pull the sponge material off from the air filter
element frame.
1. Breather hose
2. Clamp screw
1
2

1. Air filter case cover
2. Screw
1 22
2
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8-17
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7. Wash the sponge material gently but thor-
oughly in solvent.
WARNING! Always use
parts cleaning solvent to clean the sponge
material. Never use low-flash-point sol-
vents or gasoline to clean the sponge ma-
terial because the engine could catch fire
or explode.
[EWB01941]

8. Squeeze the excess solvent out of the sponge
material and let it dry.
NOTICE:
Do not twist
the sponge material when squeezingit.
[ECB00441]

9. Check the sponge material and replace it if
damaged.
10. Apply Yamaha foam air filter oil or other qual-
ity foam air filter oil to the sponge material.
TIP

The sponge material should be wet but not drip-
ping.
11. Pull the sponge material over the air filter ele-
ment frame.
12. Install the washer and bolt.
NOTICE:
Be sure
to install the washer with the bent edge
facing outward as shown.
[ECB00452]

1. Bolt
2. Washer
3. Sponge material
4. Air filter element frame
3 4
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8-18
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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. Install the air filter case cover by installing the
screws.15. Install the breather hose and then tighten the
clamp screw.
16. 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

8-20
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5. Remove the air filter case cover by removing
the screw.6. Remove the air filter element.
1. Panel
2. Coupler
1
2

1. Air filter case cover
2. Screw
12

8-21
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7. Tap the air filter element lightly to remove
most of the dust and dirt. Blow out the remain-
ing dirt with compressed air as shown.8. Check the air filter element and replace it if
damaged.
9. Install the air filter element into the air filter
case.
10. Install the air filter case cover by installing the
screw.
11. Connect the coupler, and then install the pan-
el by installing the quick fasteners.
12. Install the front carrier by installing the bolts.
EBU27630
Cleaning the spark arrester
Be sure the exhaust pipe and muffler are cool be-
1. Air filter element
1

1. Air filter element
1