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EBU21743
Periodic maintenance chart for the emission control system
TIP
G
For ATVs not equipped with an odometer or an hour meter, follow the month maintenance intervals.
G
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.
G
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
*
Carburetor
Crankcase breather
5
*
system
CHECK OR MAINTENANCE
JOB
• Check fuel hoses for cracks or other damage, and
replace if necessary.
• Check condition and clean, regap, or replace if
necessary.
• Check valve clearance and adjust if necessary.
• Check starter (choke) operation and correct if nec-
essary.
• Check engine idling speed and adjust if neces-
sary.
• Check breather hose for cracks or other damage,
and replace if necessary.
month
1
Whichev-
er comes
km
320
first
(mi)
(200)
hours
20
√
√
8-3
INITIAL
EVERY
3
6
6
1300
2500
2500
5000
(800)
(1600)
(1600)
(3200)
80
160
160
√
√
√
√
√
√
√
√
√
√
√
√
12
320
8
√
√
√
√
√
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Troubleshooting
