Periodic Maintenance Chart For The Emission Control System - Yamaha wr450fb Owner's Manual

TIP
The annual checks must be performed every year, except if a kilometer-based maintenance, or for the UK, a

mileage-based maintenance, is performed instead.
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From 7000 km (4200 mi) or 9 months, repeat the maintenance intervals starting from 3000 km (1800 mi) or 3 months.
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Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data and technical
skills.

Periodic maintenance chart for the emission control system

NO. ITEM
Fuel line
1 *
Spark plug
2 *
Valves
3 *
Breather system
4 *
Fuel injection
5 *
Muffler and
6
exhaust pipe
PERIODIC MAINTENANCE AND ADJUSTMENT
CHECKS AND MAINTENANCE JOBS
• Check fuel hoses for cracks or damage.
• Check condition.
• Clean and regap.
• Replace if necessary.
• Check valve clearance.
• Adjust.
• Check ventilation hose for cracks or damage and drain any
deposits.
• Adjust engine idling speed.
• Check the screw clamp(s) for looseness.
INITIAL
1000 km
(600 mi) or
1 month
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7-3
ODOMETER
READINGS
ANNUAL
3000 km 5000 km
CHECK
(1800 mi) (3000 mi)
or 3 or 6
months months
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EAU52500
2
3
EAU52510
4
5
6
7
8
9