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– Clean the sealing faces on the
cylinder, engine pan and oil
seals, remove gasket residue if
necessary, b 16
– Apply fresh sealant to sealing
faces, b 16
– Install new oil seals, b 8.6
: Make sure the oil seals are
properly seated
– they must be installed flush
(arrow).
1
: Pass the clutch end of the
crankshaft (1) through the
opening (arrow) in the engine
housing.
– Carefully place the engine in the
engine housing
– support engine pan from below
with one hand.
34
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– Position the engine in the engine
housing and hold it there
– the holes in the engine housing,
engine pan and cylinder must line
up.
: Fit and tighten down the cylinder
mounting screws (arrows).
– Install the worm, b 8.3
– Reassemble all other parts in the
reverse sequence.
– Tightening torques, b 3.5
– Carry out leakage test, b 8.2
8.6
Crankshaft
1
– Remove the engine, b 8.5
: Pry the engine pan (1) away from
the engine at the lugs (arrows).
– Remove the engine pan.
: Lift the crankshaft out of the
bearing seats (arrows).
: Carefully pull the crankshaft and
piston out of the cylinder.
– Inspect the crankshaft and ball
bearings and replace if
necessary, b 8.7
– Inspect piston and piston rings
and replace if necessary, b 8.8,
b 8.8.1
1
: Remove the retaining ring (1).
: Pull the oil seals (arrows) off the
crankshaft stub.
MS 171, MS 181, MS 211
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