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CHK
ADJ
INTRODUCTION/PERIODIC MAINTENANCE/
LUBRICATION INTERVALS
EB300000
PERIODIC CHECKS AND ADJUSTMENTS
INTRODUCTION
This chapter includes all information necessary to perform recommended inspections and adjust-
ments. 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.
EB301000
PERIODIC MAINTENANCE/LUBRICATION INTERVALS
*
It is recommended that these items be serviced by a Yamaha dealer.
** Lithium-soap-based grease.
ITEM
ROUTINE
INITIAL
EVERY
1
month
3
months
6
months
6
months
1
year
Valves*
• Check valve clearance.
• Adjust if necessary.
Cam chain*
• Check chain tension.
• Adjust if necessary.
Spark plug
• Check condition.
• Adjust gap and clean.
• Replace if necessary.
Air filter element
• Clean.
• Replace if necessary.
Every 20 ~ 40 hours
(more often in wet or dusty areas.)
Carburetor*
• Check idle speed/choke lever operation.
• Adjust if necessary.
Crankcase breather
system*
• Check breather hose for cracks or damage.
• Replace if necessary.
Exhaust system*
• Check for leakage.
• Retighten if necessary.
• Replace gasket if necessary.
Fuel line*
• Check fuel hose for cracks or damage.
• Replace if necessary.
Engine oil
• Replace (warm engine before draining).
Final gear oil
• Check oil level/oil leakage.
• Replace every 12 months.
Brakes*
• Check operation.
• Adjust if necessary.
Clutch*
• Check operation.
• Adjust if necessary.
Wheels*
• Check balance/damage/runout.
• Replace if necessary.
Wheel bearings*
• Check bearing assemblies for looseness/damage.
• Replace if damaged.
Steering system*
• Check operation.
• Repair if damaged.
• Check toe-in.
• Adjust if necessary.
Knuckle shafts/
steering shaft*
• Lubricate every 6 months.**
Fittings and fasten-
ers*
• Check all chassis fittings and fasteners.
• Correct if necessary.
Battery*
• Check specific gravity.
• Check breather hose for correct routing.
• Correct if necessary.
