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EAS20450
PERIODIC MAINTENANCE
EAS20460
INTRODUCTION
This chapter includes all information necessary to perform recommended checks and adjustments. If
followed, these preventive maintenance procedures will ensure more reliable vehicle operation, a long-
er service life and reduce the need for costly overhaul work. 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.
NOTE:
If you do not have the tools or experience required for a particular job, have a Yamaha dealer perform
it for you.
EWA10340
WARNING
Modifications not approved by Yamaha may cause loss of performance, excessive emissions,
and render the vehicle unsafe for use. Consult a Yamaha dealer before attempting any changes.
EAS17580
Periodic maintenance chart for the emission control system
No
ITEM
.
G
1 * Fuel hose
G
G
G
G
2
Spark plug
3
Spark arrester
G
G
4 * Valve clearance
G
Crankcase
5 *
breather system
G
G
6 * Idle speed
G
G
7 * Exhaust system
G
Evaporative emis-
G
sion control sys-
8 *
tem (For
G
California only)
INITIAL
ROUTINE
(1000 km)
1 month
Check fuel hoses for
cracks or damage.
Replace if necessary.
Check condition.
Adjust gap and clean.
Replace at 7000 mi (11000
km) or 12 months and
thereafter every 6000 mi
(10000 km) or 12 months.
Clean.
Check and adjust valve
clearance when engine is
cold.
Check breather hose for
cracks or damage.
Replace if necessary.
Check and adjust engine
idle speed.
Check for leakage.
Tighten if necessary.
Replace gasket(s) if nec-
essary.
Check control system for
damage.
Replace if necessary.
PERIODIC MAINTENANCE
ODOMETER READINGS
7000 mi
600 mi
4000 mi
(11000
(6000 km)
km)
or
or
or
6 months
12 months
√
√
√
Replace.
√
√
√
√
√
√
√
√
√
√
√
√
3-1
10000 mi
13000 mi
16000 mi
(16000
(21000
(26000
km)
km)
km)
or
or
or
18 months
24 months
30 months
√
√
√
√
√
Replace.
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
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