157qmj engine manual

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Clean up the carbon around the spark plug to prevent it from dripping into the cylinder when being removed.

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SPARK PLUGNote: The spark plug should generally be serviced when the engine is cold. MAINTENANCE AND TUNE-UP PROCEDUREDescriptions of the servicing procedures for each item in the Periodic Maintenance requirements.

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Riding in unusually dusty areas requires more frequent servicing.Items Needing Servicing Tire pressure/wear Brake performance Tightness of screws Air cleaner Carburetor Spark plug Drive chain Brake uid Replace gearbox oil Chassis Fuel switch/fuel tank Battery Engine oil Valve clearance of engine Initial Service (rst week) I I I I I Monthly I I I C A I I C, L I R A Quarterly YearlyĪ: Adjust C: Clean I: Inspect, clean or replace if necessary L: Lubricate R: Replace PERIODIC MAINTENANCE AND TUNE-UP PROCEDURESPERIODICAL CHECK AND SERVICESThe maintenance intervals in the following table are based upon average riding conditions. TABLE OF CONTENTSGENERAL INFORMATION PERIODIC MAINTENANCE AND TUNE-UP PROCEDURES ENGINE LUBRICATION SYSTEM FUEL SUPPLY SYSTEM TRANSMISSION COMPONENTS ELECTRICAL STARTING SYSTEM BELT DRIVE CVT MECHANISM CLUTCH REAR TRANSMISSION SYSTEM ELECTRICAL SYSTEM IGNITION SYSTEM CHASSIS WIRING DIAGRAM INDEX 1 5 9 24 28 33 36 42 46 51 56 62 66 72 73