Operation Manual

47MS 241 C
Installation
– Heat the bearing seat of the ball
bearing to approx. 150 °C
(300 °F)
– Position ball bearing so that the
open side (balls visible) faces the
inside of the crankcase
: Press the grooved ball bearing
home as far as possible
The ball bearing must be fitted
rapidly, as it absorbs heat and
expands.
– Check seat of ball bearing, if
necessary, use press arbor
1118 893 7200 to press the ball
bearing fully home in the ball
bearing seat
Clutch-side half of the crankcase
: Carefully drive the oil seal out
with a punch
– Examine and clean the
crankcase, replace if necessary.
2410RA126 TG2410RA127 TG
– Replace ball bearings if the
crankcase is in good condition
– Heat the bearing seat of the ball
bearing to approx. 150 °C
(300 °F)
The bearing (1) drops out of its own
accord when this temperature is
reached.
Installation
Because the clutch side half of the
crankcase does not have a fixed
bearing seat, the oil pump must be
removed beforehand
– The oil pump serves as a
reference
– Install oil pump, b 12.3
– Heat the bearing seat of the ball
bearing to approx. 150 °C
(300 °F)
– Position ball bearing so that the
centering ring (arrow) points
towards the oil pump
: Press ball bearing fully home (oil
pump)
2410RA128 TG
1
2410RA129 TG
The ball bearing must be fitted
rapidly, as it absorbs heat and
expands.
– Check seat of ball bearing, if
necessary, use press arbor
1118 893 7200 to carefully press
the ball bearing fully home until it
rests against the oil pump
– Remove oil pump, b 12.3
– Install crankshaft, b 6.6
– Install the oil seals, b 6.3
– Reassemble remaining parts in
reverse order
6.7 Piston
Before removing the cylinder,
decide whether the crankshaft is to
be removed, b 6.6
– Remove the cylinder, b 6.5
The clutch side snap ring is not
removed.
: Pry the hookless snap ring out of
the recess (arrow) on the ignition
side with a suitable tool
2410RA130 TG