Page 76 of 126
8-7
1
2
3
4
5
6
78
9
10
11
20 Engine oil
Change.
Check ATV for oil leakage, and correct if neces-
sary.
√ √√√
21Engine oil filter ele-
ment
Clean or replace if necessary.
√√√
22
*
Moving parts and
cables
Lubricate.
√√√√
23
*
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.
√√√√√
24
*
Front and rear brake
switches
Check operation and correct if necessary.
√√√√√
25
*
Lights and switches
Check operation and correct if necessary.
Adjust headlight beams.
√√√√√
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 80 160 160 320
Page 79 of 126
8-10
1
2
3
4
5
6
78
9
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.
EBU28881
Engine oil and oil filter element
The engine oil level should be checked before
each ride. In addition, the oil must be changed and
the oil filter element cleaned at the intervals speci-
fied in the periodic maintenance and lubrication
chart. Specified spark plug:
NGK/DR7EA
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)
1. Spark plug cap
Tightening torque:
Spark plug:
18 Nm (1.8 m·kgf, 13 ft·lbf)
Page 81 of 126
8-12
1
2
3
4
5
6
78
9
10
11
To change the engine oil (with or without oil
filter element cleaning)
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. Place an oil pan under the engine to collect
the used oil.
4. Remove the engine oil filler cap, and then re-
move the engine oil drain bolt to drain the oil
from the crankcase.
CAUTION:
ECB00310
When removing the engine oil drain bolt, thecompression spring, oil strainer and O-ring will
fall out. Take care not to lose these parts.
NOTE:
Skip steps 5–9 if the oil filter element is not being
cleaned.
5. Remove the oil filter element cover by remov-
ing the bolts, and then remove the oil filter el-
ement.
6. Clean the oil filter element with solvent.
7. Check the O-rings for damage and replace it if
necessary.
1. Engine oil drain bolt
1
1. Oil filter element cover
2. Bolt
1 2
Page 94 of 126
8-25
1
2
3
4
5
6
78
9
10
11
3. Refill with brake fluid.
4. Install the brake fluid reservoir cap.
5. Install the brake fluid reservoir cap cover by
installing the bolt.
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.
1. Brake fluid reservoir cap
Recommended brake fluid:
DOT 4
1
