Stihl MS 650 Manual page 45

– Heat the area of the ball bearing
seat on the clutch side of the
crankcase to about 120 °C
(250 °F).
Wear suitable gloves to protect
your hands from burn injuries.
: Push the ball bearing, open side
(balls visible) facing the
crankcase, into the crankcase by
hand, from the outside inwards
as far as stop.
The ball bearing must be flush with
the inside of the crankcase. It
projects about 1 mm at the clutch
side (at the oil pump).
This operation must be carried out
very quickly because the bearing
absorbs heat immediately and
begins to expand.
44
1
: If it is not possible to heat the
clutch side of the crankcase, use
press arbor (1) 1124 893 7200 to
press home the ball bearing flush
with the inside of the crankcase.
2
– Wait for crankcase to cool down.
: Push the annular buffer home so
that its annular groove (1)
engages the housing rib (2).
1
: Screw spindle of service tool ZS
(2) 5910 893 2101 fully home
and then screw the threaded
sleeve (1) 5910 893 2421 onto
the spindle as far as stop.
– Lubricate tapered stub of
crankshaft with oil.
1
: Place tapered stub of crankshaft
in ball bearing at the flywheel side
of the crankcase.
2
MS 650, MS 660