Periodic Checks And Adjustments; Introduction; Periodic Maintenance/Lubrication - Yamaha YFM660FR Supplementary Service Manual

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INTRODUCTION/PERIODIC MAINTENANCE/
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.
EBU00261

PERIODIC MAINTENANCE/LUBRICATION

ITEM
• Check valve clearance.
Valves*
• Adjust if necessary.
• Check coolant leakage.
Cooling system
• Repair if necessary.
• Replace coolant every 24 months.
• Check condition.
Spark plug
• Adjust gap and clean.
• Replace if necessary.
• Clean.
Air filter
• Replace if necessary.
• Check and adjust idle speed/starter operation.
Carburetor*
• Adjust if necessary.
Crankcase breather
• Check breather hose for cracks or damage.
system*
• Replace if necessary.
• Check for leakage.
Exhaust system*
• Retighten if necessary.
• Replace gasket(s) if necessary.
• Check fuel hose for cracks or damage.
Fuel line*
• Replace if necessary.
Engine oil
• Replace (Warm engine before draining).
Engine oil filter car-
• Replace.
tridge
Final gear oil
• Check oil level/oil leakage.
• Replace.
Differential gear oil
• Check operation/fluid leakage/see NOTE page 13.
Front brake*
• Correct if necessary.
• Check operation/fluid leakage/see NOTE page 13.
Rear brake*
• Correct if necessary.
• Check operation.
V-belt*
• Check for cracks or damage.
• Check balance/damage/runout.
Wheels*
• Repair if necessary.
Whichever
ROUTINE
comes first
LUBRICATION
km
320
(mile)
(200)
hours
20
– 12 –
CHK
ADJ
INITIAL
1,200
2,400
2,400
(750)
(1,500)
(1,500)
75
150
150
Every 20 ~ 40 hours
(More often in wet or dusty areas.)
EVERY
4,800
(3,000)
300

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