95
8Crankshaft and crankcase
504 91 28-06
502 54 09-01
502 50 53-01
502 50 55-01
Replacement of sealing
ring on the clutch side
Mod. 625/630/670
The sealing ring is in the oil pump housing
on these models.
Dismantle the oil pump and press out the
sealing ring with a suitable mandrel.
Press in the new sealing ring from the
back of the pump housing to approx. 0.5
mm above the surface of the housing.
Use an assembling sleeve when the oil
pump is fitted on the crankcase.
Mod. 2077/2083
Mod. 2095
Dismantle the centrifugal clutch and the
oil pump.
On mod. 2077/2083 the oil pump gear
must also be dismantled.
Pull of the sealing ring by means of an
extractor.
Replacement of sealing
ring on the clutch side
Mod. 625/630/670
The sealing ring is in the oil pump housing
on these models.
Dismantle the centrifugal clutch and pump
housing.
Press out the sealing ring with a suitable
mandrel.
Fit the new sealing ring from the back of
the pump housing to avoid dismantling
the pump gear. Use mandrel 504 91 28-
06 and press down the sealing ring to
approx. 0.5 mm above the surface of the
pump housing.
Turn the sealing ring so that the plate
mantle comes outwards.
Place assembling sleeve 502 50 53-01
on the shaft to prevent the sealing ring
from being damaged when the oil pump
is fitted on the crankcase.
Mod. 2077/2083
Mod. 2095
Dismantle the centrifugal clutch and the
oil pump.
On mod. 2077/2083 the oil pump gear on
the crankshaft must also be dismantled.
Use extractor 502 54 09-01.
Pull off the sealing ring by means of an
extractor. Make sure that it is screwed
into the sealing ring as far as possible
before extracting.
Use extractor 502 50 55-01.