GAS GAS MC 450F 2022 Owner's Manual page 38

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9 SERVICE SCHEDULE
Perform minor engine service, engine has been installed. (Change the spark plug and spark
plug connector. Change the piston, check and measure the cylinder; check the cylinder
head. Check the camshaft, rocker arm and rocker arm shafts. Check timing assembly.)
Perform major engine service including removing and installing the engine. (Change valves,
valve springs, valve spring seats, and valve spring retainers. Change the connecting rod,
conrod bearing and crank pin. Check the transmission and the shift mechanism. Check the
oil pressure control valve. Change the suction pump. Check the force pump and lubrication
system. Change the timing chain. Change all engine bearings. Change the radial shaft seal
rings and bearing seals of the main bearing.)
One-time interval
Periodic interval
36
every 12 months
Every 100 operating hours
Every 50 operating hours
After 20 operating hours
After 10 operating hours
every 48 months

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