Suzuki LT-Z250 Service Manual page 111

OIL FILTER
Before installing the oil filter, fit new O-rings and apply engine
oil lightly to them.
Install the spring 1 and oil filter 2.
'
Use new O-rings to prevent oil leakage.
STARTER IDLE GEAR
Install the idle driven gear 1, shaft 2 and spacer 3.
GENERATOR COVER
Install the dowel pins and new gasket.
Install the reverse lock release cable holder 4 and tighten the
generator cover bolt.
SECONDARY DRIVEN BEVEL GEAR
Install the secondary driven bevel gear shaft assembly 1.
Install the dowel pins.
ENGINE 3-69