Yamaha RS90NL Suplementary Service Manual

Also see for RS90GTL: Owner's manual Supplementary service manual

Yamaha RS90NL Suplementary Service Manual Manual pdf 18 page image

2INSPADJPERIODIC INSPECTION AND ADJUSTMENTINTRODUCTIONThis chapter includes all information necessary to perform recommended inspections and adjustments. Thesepreventive 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 tomachines already in service as well as new machines that are being prepared for sale. All service techniciansshould be familiar with this entire chapter.PERIODIC MAINTENANCE CHARTRegular maintenance is most important for best performance and safe operation.Item RemarksPre-opera-tion check(Daily)Initial1 month or800 km(500 mi)(40 hr)EverySeasonallyor 4,000 km(2,500 mi)(200 hr)Spark plugsCheck 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.Every20,000 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.CarburetorsAdjust synchronization of carburetors.Adjust the jets. Whenever operating condition (elevation/tem-perature) is changed.Throttle lever (carburetorside) Check throttle lever operation.Throttle lever (handlebarside)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