Yamaha YFM90RYXJ, Owner'S Manual

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8-3
8
EBU21745
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 still 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 starter (choke) operation and correct if
necessary.
• Check engine idling speed and adjust if neces-
sary.
√ √ √ √
5 *
Crankcase breath-
er system • Check breather hose for cracks or other damage,
and replace if necessary.
√ √ √
UBD362E0.book Page 3 Tuesday, January 31, 2017 5:10 PM