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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 inter-
vals. However, keep in mind that if the ATV isn’t used for a long period of time, the month maintenance
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
month136612
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 *
Crankcase breather
system
• Check breather hose for cracks or other damage,
and replace if necessary.
√√√
5 * Exhaust system
• Check for leakage and replace gasket(s) if neces-
sary.
• Check for looseness and tighten all screw clamps
and joints if necessary.
√√√
6 Spark arrester • Clean. √√√
U28P10E0.book Page 3 Thursday, April 10, 2008 9:29 AM