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INTRODUCTION/PERIODIC MAINTENANCE CHART
FOR THE EMISSION CONTROL SYSTEM
EBS00029
PERIODIC CHECKS AND ADJUSTMENTS
INTRODUCTION
This chapter includes all information necessary to perform recommended checks and adjustments.
These preventive maintenance procedures, if followed, will ensure more reliable vehicle operation
and a longer service life. The need for costly overhaul work will be greatly reduced. This information
applies to vehicles already in service as well as to new vehicles that are being prepared for sale. All
service technicians should be familiar with this entire chapter.
PERIODIC MAINTENANCE CHART FOR THE EMISSION CONTROL
SYSTEM
NOTE:
• For ATVs not equipped with an odometer or an hour meter, follow the month maintenance inter-
vals.
• For ATVs equipped with an odometer or an hour meter, follow the km (mi) or hours maintenance
intervals. 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 fuel hoses for cracks or other damage, and
1 * Fuel line
• Check condition and clean, regap, or replace if nec-
2
Spark plug
3 * Valves
• Check valve clearance and adjust if necessary.
• Check starter (choke) operation and correct if neces-
4 * Carburetor
• Check engine idling speed and adjust if necessary.
Crankcase breather
• Check breather hose for cracks or other damage,
5 *
system
• Check for leakage and replace gasket(s) if neces-
6 * Exhaust system
• Check for looseness and tighten all screw clamps
7
Spark arrester
• Clean.
Whichever
CHECK OR MAINTE-
comes first
NANCE JOB
replace if necessary.
essary.
sary.
and replace if necessary.
sary.
and joints if necessary.
– 9 –
INITIAL
month
1
3
km
320
1300
2500
(mi)
(200)
(800)
(1600)
hours
20
80
160
√
√
√
√
CHK
ADJ
EVERY
6
6
12
2500
5000
(1600)
(3200)
160
320
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
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