8-3
1
2
3
4
5
6
78
9
10
11
EBU21742
Periodic maintenance chart for the emission control system
NOTE:
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. 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 3201
*
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 starter (choke) operation and correct if nec-
essary.
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.
√√√
