Yamaha RS90GTL, Suplementary Service Manual

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2
INSP
ADJ
PERIODIC INSPECTION AND ADJUSTMENT
INTRODUCTION
This chapter includes all information necessary to perform recommended inspections and adjustments. These
preventive maintenance procedures, if followed, will ensure more reliable machine operation and a longer ser-
vice life. In addition, the need for costly overhaul work will be greatly reduced. This information applies to
machines already in service as well as new machines that are being prepared for sale. All service technicians
should be familiar with this entire chapter.
PERIODIC MAINTENANCE CHART
Regular maintenance is most important for best performance and safe operation.
Item Remarks
Pre-opera-
tion check
(Daily)
Initial
1 month or
800 km
(500 mi)
(40 hr)
Every
Seasonally
or 4,000 km
(2,500 mi)
(200 hr)
Spark plugs
Check condition.
Adjust gap and clean.
Replace if necessary.
Valve clearance
Check clearance.
Adjust clearance when engine is cold.
Every 40,000 km (25,000 mi)
Engine oil
Check oil level.
Replace.
Engine oil filter cartridge Replace.
Every
20,000 km
(12,000 mi)
Fuel Check fuel level.
Crankcase breather system
Check breather hose for cracks or damage.
Replace if necessary.
Fuel filter
Check condition.
Replace if necessary.
Fuel line
Check fuel hose for cracks or damage.
Replace if necessary.
Engine coolant
Check coolant level.
Air bleed the cooling system if necessary.
Idle speed Check and adjust engine idle speed.
Carburetors
Adjust synchronization of carburetors.
Adjust the jets.
Whenever operating condition (elevation/tem-
perature) is changed.
Throttle lever (carburetor
side)
Check throttle lever operation.
Throttle lever (handlebar
side) Check operation.
Repair if necessary.
Throttle override system
(T.O.R.S.) Check operation.
Repair if necessary.
Engine stop switch
Check operation.
Repair if necessary.
Exhaust system
Check for leakage.
Tighten or replace gasket if necessary.
Drive guard
Check for cracks, bends or damage.
Replace if necessary.
V-belt Check for wear and damage. Replace if necessary.
Drive track and idler wheels
Check deflection, and for wear and damage.
Adjust/replace if necessary.
Slide runners
Check for wear and damage.
Replace if necessary.
INTRODUCTION/PERIODIC MAINTENANCE CHART