Husqvarna FE 450 2021 Owner's Manual page 47

Perform engine service including removing and installing the engine. (Change the
spark plug and spark plug connector. Change the piston. Check/measure the
cylinder. Check the cylinder head. Change the valves, valve springs, and valve
spring seats. Check the camshaft, rocker arm and rocker arm shafts. Change the
connecting rod, conrod bearing and crank pin. Change the radial shaft seal ring
of the water pump. Check the transmission and the shift mechanism. Check the
oil pressure control valve. Change the suction pump. Check the force pump and
lubrication system. Check the timing assembly. Change the timing chain. Change
all engine bearings. Change the freewheel.)
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One-time interval
●
Periodic interval
Every 70 operating hours when used for motorsports
After 20 operating hours
After 10 operating hours
every 48 months
every 12 months
SERVICE SCHEDULE 10
Every 135 operating hours
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