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EAS20450
PERIODIC MAINTENANCE
EAS20460
INTRODUCTION
This chapter includes all information necessary to perform recommended checks and adjustments. If
followed, these preventive maintenance procedures will ensure more reliable vehicle operation, a long-
er service life and reduce the need for costly overhaul work. This information applies to vehicles already
in service as well as to new vehicles that are being prepared for sale. All service technicians should be
familiar with this entire chapter.
EBU21742
PERIODIC MAINTENANCE CHART FOR THE EMISSION CONTROL SYSTEM
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 in-
tervals. However, keep in mind that if the ATV isn't used for a long period of time, the month mainte-
nance 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.
ITEM
1
*
Fuel line
2
Spark plug
3
*
Valves
4
*
Fuel injection
Crankcase breather
5
*
system
6
*
Exhaust system
7
Spark arrester
EBU21864
GENERAL MAINTENANCE AND LUBRICATION CHART
NO.
ITEM
1
Air filter element
2
*
Clutch
3
*
Front brake
CHECK OR MAINTENANCE
JOB
• Check fuel hoses for cracks or other damage, and re-
place if necessary.
• Check condition and clean, regap, or replace if nec-
essary.
• Check valve clearance and adjust if necessary.
• Check and adjust if necessary.
• Check breather hose for cracks or other damage,
and replace if necessary.
• Check for leakage and replace gasket(s) if neces-
sary.
• Check for looseness and tighten all screw clamps
and joints if necessary.
• Clean.
CHECK OR MAINTENANCE
JOB
• Clean and replace if necessary.
• Check operation and adjust if necessary.
• Check operation and correct if necessary.
• Check fluid level and ATV for fluid leakage, and cor-
rect if necessary.
• Replace brake pads.
PERIODIC MAINTENANCE
month
Whichever
comes first
km (mi)
(200)
hours
month
Whichever
comes first
km (mi)
(200)
hours
3-1
INITIAL
1
3
6
320
1300
2500
2500
(800)
(1600)
(1600)
20
80
160
160
√
√
√
√
√
√
√
√
√
√
√
√
INITIAL
1
3
6
320
1300
2500
2500
(800)
(1600)
(1600)
20
80
160
160
Every 20–40 hours (more often in wet or
dusty areas)
√
√
√
√
√
Whenever worn to the limit
EVERY
6
12
5000
(3200)
320
√
√
√
√
√
√
√
√
√
√
√
√
√
√
EVERY
6
12
5000
(3200)
320
√
√
√
√
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