Stihl SR 450 - Page 25

24 SR 430, SR 450
– Position the piston with clamping
strap on the cylinder and hold it
steady.
While sliding the piston into the
cylinder, check that the clamping
strap is tightly around the piston and
the rings do not project
– they might otherwise break.
: Carefully slide the piston into the
cylinder. The clamping strap is
pushed off in the process.
: Open and remove the clamping
strap (1).
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: Rotate the crankshaft until the
tapered crankshaft stub (1)
points in the direction of the
bosses (arrows) on the cylinder.
: Lubricate sealing lip (arrows) of
new oil seal with grease, b 13
– Fit the installing sleeve (1)
1118 893 4602 on each side
before pushing the oil seals into
place.
: Push the new oil seals (2), open
side facing the ball bearings, onto
the crankshaft stubs.
– Remove the installing sleeve (1).
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2
1
2
: Apply thin coating of sealant to
outside diameter (arrows) of the
oil seals, b 13
: Place the crankshaft with
bearings and oil seals in the
bearing seats, making sure the oil
seals are firmly against their
stops (arrows) in the crankcase.
: Apply sealant to the groove in the
sealing face,
b 13
Make sure the sealant does not
project into the engine pan.
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