Stihl SR 430 Manual page 24

– Inspect and clean the sealing
faces and seats of the oil
seals (arrows) and remove any
gasket residue if necessary,
b 13
The sealing faces must be in perfect
condition. Always replace
components with damaged sealing
faces, b 3.5.
New sealant must be applied every
time the cylinder or engine pan is
removed.
1
– Inspect the spacer flange (1) and
replace it if necessary – even
very minor damage can result in
engine running problems, b 3.5
If a new cylinder is being installed,
the spacer flange may be
transferred from the old cylinder if it
is in good condition.
: Take out the screws (arrows).
– Remove the spacer flange (1).
SR 430, SR 450
1
: Remove the gasket (1).
: Inspect and clean the sealing
face (arrow) and remove any
gasket residue, b 13
– Inspect the sealing faces on
exhaust port.
The sealing faces must be in perfect
condition. If the sealing faces are
damaged, install a new cylinder.
– Inspect the piston and piston
rings and replace if necessary,
b 4.8
Installing
1
– Lubricate the piston, piston rings
and cylinder wall with oil, b 13
: Use the clamping strap (1)
4244 893 2600 to compress the
rings around the piston.
– Check correct installed position
of rings, b 4.8.1
Apply the clamping strap (1) so that
the piston rings do not project
beyond the cylinder wall.
– Close the clamping strap (arrow).
1
The arrow (1) on the clamping strap
must point in the direction of the
recess (arrow) in the cylinder.
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