Stihl MS 261 User Manual page 46

The crankshaft turns when it is
being pulled into place with the
service tool. Therefore, make sure
the small end (1) of the connecting
rod always points upward to the
cylinder.
– Remove the service tool.
: At the ignition side, fit three
M5x72 screws (arrows) in the
holes
to help alignment and avoid
twisting.
MS 261, MS 261 C
1
: Fit a new gasket (1) and locate it
on the sleeves (arrows).
– Coat the straight stub of the
crankshaft with oil.
Clutch side of crankcase
Take care not to damage the
crankshaft stub.
Inspect and clean the sealing faces
on the clutch side of the
crankcase (including the cylinder
sealing face) – the sealing faces
must not be damaged in any way.
Make sure the sleeves (arrows)
engage the holes and the gasket is
not pinched or twisted.
1
– Wear protective gloves
to reduce risk of burn injury.
– Heat the bearing inner race to
about 160°C (320°F).
– Position the clutch side of the
crankcase on the straight
crankshaft stub and the screws.
: Push the crankcase fully home.
This operation must be carried out
very quickly because heat is
absorbed by the crankshaft, and the
inner bearing race shrinks.
If it is not possible to heat the inner
bearing ring, use the service tool
from set 5910 007 2205 to install
the crankcase.
– Coat the straight stub of the
crankshaft with oil.
– Position the clutch side of the
crankcase on the straight
crankshaft stub and the two
screws.
45