Periodic Maintenance; Introduction; Periodic Maintenance Chart For The Emission Control System - Yamaha WR450F Owner's Service Manual

PERIODIC MAINTENANCE

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INTRODUCTION

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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
longer 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.

PERIODIC MAINTENANCE CHART FOR THE EMISSION CONTROL SYSTEM

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TIP
• From 4200 mi (7000 km) or 9 months, repeat the maintenance intervals starting from 1800 mi (3000
km) or 3 months.
• Items marked with an asterisk should be performed by a Yamaha dealer as they require special
tools, data and technical skills.
NO. ITEM
* Fuel line
1
Spark plug
2
Valve clear-
*
3
ance
Air filter ele-
*
4
ment
Breather
*
5
system
Fuel injec-
*
6
tion
Exhaust sys-
7
tem
Engine oil
8
Engine oil fil-
9
ter element
Engine oil
10
strainer
CHECKS AND MAINTENANCE JOBS
• Check fuel hoses for cracks or dam-
age.
• Replace if necessary.
• Check condition.
• Adjust gap and clean.
• Check and adjust valve clearance
when engine is cold.
• Clean with solvent and apply Yamaha
foam air filter oil or other quality foam
air filter oil.
• Replace if necessary.
• Check ventilation hose for cracks or
damage and drain any deposits.
• Adjust engine idling speed.
• Check for leakage.
• Tighten if necessary.
• Replace gasket(s) if necessary.
• Change (warm engine before drain-
ing).
• Replace.
• Clean.
PERIODIC MAINTENANCE
INITIAL
600 mi
(1000
km) or 1
month
3-1
ODOMETER READ-
INGS
1800 mi 3000 mi
(3000
km) or 3 km) or 6
months months
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(5000
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