41
MS 271 C, MS 291 C
:
Hold the cylinder steady and
insert screws (1) and screw with
collar (2) in the underside of the
engine housing.
– Tighten down the screws firmly in
a crosswise pattern.
– Reassemble all other parts in the
reverse sequence.
6.6
Crankshaft / Bearings
– Remove the cylinder,
b
6.5
– Remove the crankshaft and pull
off the oil seals,
b
6.5
Always install new oil seals after
removing the crankshaft,
b
6.5
– Remove the piston,
b
6.7
:
Pull out the needle cage (1),
check it and replace if necessary.
2710RA112 TG
1
1
1
2
2710RA113 TG
1
:
Pull the ball bearing (1) off the
tapered crankshaft stub (ignition
side).
:
Pull the ball bearing (1) off the
straight crankshaft stub (clutch
side).
The crankshaft, connecting rod and
needle bearing form an inseparable
unit.
When fitting a replacement
crankshaft, always install new ball
bearings and oil seals.
Before installing, clean the
Heated ball bearings must be
installed quickly because the
crankshaft stubs absorb heat and
expand.
2710RA114 TG
1
2710RA115 TG
1
– Position the ball bearing (1) with
its open side facing the
crankshaft.
– Heat the inner bearing race to
about 150°C (300°F).
:
Push the ball bearing onto the
tapered crankshaft stub (clutch
side) as far as stop.
– Position the ball bearing (1) with
its open side facing the
crankshaft.
– Heat the inner bearing race to
about 150°C (300°F).
:
Push the ball bearing onto the
straight crankshaft stub (ignition
side) as far as stop.
2710RA117 TG
1
2710RA118 TG
1
