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8-3
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 inter-
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
CHECK OR MAINTENANCE
JOB
INITIAL EVERY
Whichev-
er comes
first
month 1 3 6 6 12
km
(mi)
320
(200)
1300
(800)
2500
(1600)
2500
(1600)
5000
(3200)
hours 20 80 160 160 320
1
*
Fuel line
Check fuel hoses for cracks or other damage, and
replace if necessary.
√ √ √
2 Spark plug
Check condition and clean, regap, or replace if
necessary.
√ √ √ √ √
3
*
Valves
Check valve clearance and adjust if necessary.
√ √ √ √
4
*
Carburetor
Check choke operation and correct if necessary.
Check engine idling speed and adjust if neces-
sary.
√ √ √ √
5
*
Crankcase breather
system
Check breather hose for cracks or other damage,
and replace if necessary.
√ √ √
8
vals. However, keep in mind that if the ATV isn’t used for a long period of time, the month maintenance