Page 80 of 132
8-5
1
2
3
4
5
6
78
9
10
11
16
*
Shock absorber
assemblies
Check operation and correct if necessary.
Check for oil leakage and replace if necessary.
√√√
17
*
Steering shaft
Lubricate with lithium-soap-based grease.
√√√
18
*
Steering system
Check operation and repair or replace if damaged.
Check toe-in and adjust if necessary.
√√√√√
19
*
Carburetor
Check starter (choke) operation and correct if nec-
essary.
Check engine idling speed and adjust if neces-
sary.
√√√√
20
*
Crankcase breather
system
Check breather hose for cracks or other damage,
and replace if necessary.
√√√
21 Transmission oil
Change.
Check ATV for oil leakage, and correct if neces-
sary.
√ √√√
22
*
Autolube pump
Check operation and bleed if necessary.
√√√
23
*
Moving parts and
cables
Lubricate.
√√√√
24
*
Throttle lever hous-
ing and cable
Check operation and correct if necessary.
Check throttle cable free play and adjust if neces-
sary.
Lubricate throttle lever housing and cable.
√√√√√
25
*
Exhaust system
Check for leakage and replace gasket(s) if neces-
sary.
Check for looseness and tighten all screw clamps
and joints if necessary.
√√√
NO. ITEMCHECK OR MAINTENANCE
JOBINITIAL EVERY
Whichev-
er comes
firstmonth 1 3 6 6 12
km
(mi)320
(200)1200
(750)2400
(1500)2400
(1500)4800
(3000)
hours 20 75 150 150 300
Page 83 of 132
8-8
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3
4
5
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78
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10
11
2. Check the spark plug for electrode erosion
and excessive carbon or other deposits, and
replace it if necessary.
To install the spark plug
1. Measure the spark plug gap with a wire thick-
ness gauge and, if necessary, adjust the gap
to specification.2. Clean the surface of the spark plug gasket
and its mating surface, and then wipe off any
grime from the spark plug threads.
3. Install the spark plug with the spark plug
wrench, and then tighten it to the specified
torque.NOTE:
If a torque wrench is not available when installing
a spark plug, a good estimate of the correct torque
is 1/4–1/2 turn past finger tight. However, the spark
plug should be tightened to the specified torque as
soon as possible.
4. Install the spark plug cap.
EBU23350
Transmission oil
The transmission oil level should be checked be-
fore each ride. In addition, the transmission oil
must be changed at the intervals specified in the
periodic maintenance and lubrication chart. Specified spark plug:
NGK/BR8ES
Spark plug gap:
0.7–0.8 mm (0.028–0.031 in)
1. Spark plug gap
Tightening torque:
Spark plug:
25 Nm (2.5 m·kgf, 18 ft·lbf)
Page 84 of 132
8-9
1
2
3
4
5
6
78
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11
To check the transmission oil level
1. Place the ATV on a level surface.
2. Start the engine, warm it up for several min-
utes, and then turn it off.
3. Wait a few minutes until the oil settles, and
then check the oil level through the check win-
dow located at the right side of the crankcase.NOTE:
The transmission oil should be between the mini-
mum and maximum level marks.
4. If the oil is at or below the minimum level mark,
remove the oil filler cap, add sufficient oil of
the recommended type to raise it to the cor-
rect level, and then install and tighten the oil
filler cap.
To change the transmission oil
1. Place the ATV on a level surface.
2. Start the engine, warm it up for several min-
utes, and then turn it off.
1. Transmission oil level check window
2. Maximum level mark
3. Minimum level mark
11
32
1. Transmission oil filler cap
1
Page 100 of 132
8-25
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2
3
4
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Rear brake
Observe these precautions:
When checking the fluid level, make sure that
the top of the brake fluid reservoir is level.
Use only the recommended quality brake fluid,
otherwise the rubber seals may deteriorate,
causing leakage and poor braking performance.
Refill with the same type of brake fluid. Mixing
fluids may result in a harmful chemical reaction
and lead to poor braking performance.
Be careful that water does not enter the brake
fluid reservoir when refilling. Water will signifi-
cantly lower the boiling point of the fluid and may
result in vapor lock.
Brake fluid may deteriorate painted surfaces or
plastic parts. Always clean up spilled fluid imme-
diately.
As the brake pads wear, it is normal for the brake
fluid level to gradually go down. However, if the
brake fluid level goes down suddenly, have a
Yamaha dealer check the cause.
EBU24290
Changing the brake fluid
Have a Yamaha dealer change the brake fluid at
the intervals specified in the NOTE after the peri-
odic maintenance and lubrication chart. In addi-
tion, have the oil seals of the master cylinders and
calipers as well as the brake hoses replaced at the
intervals listed below or whenever they are dam-
aged or leaking.
Oil seals: Replace every two years.
Brake hoses: Replace every four years.
EBU24390
Checking the front brake lever free play
The brake lever free play must be checked at the
1. Minimum level mark
Recommended brake fluid:
DOT 4
LOWER
1
