Engine; Removing And Refitting Exhaust Muffler - Stihl 029, 039 Service Manual

STIHL 029, 039
4.

ENGINE

4.1 Removing and Refitting
Exhaust Muffler
Top:
Flanged locknuts on muffler
Bottom:
Removing the muffler
These machines do not have a
conventional crankcase - the engine
consists of the cylinder, piston,
crankshaft and engine pan.
Troubleshooting chart - see 2.2.
- Unscrew flanged locknuts from
muffler.
- Remove muffler together with cover.
Top:
Removing the cover
Bottom:
Removing the spark arresting screen
- Remove the cover from the
muffler.
- Remove the spark arresting
screen, if fitted, from the muffler.
- Clean the spark arresting screen or
fit a new one if necessary.
Top:
Gasket
Bottom:
Removing the screws
- Remove the gasket.
- Take the mounting screws out of
their seats on the cylinder.
Reassemble in the reverse
sequence.
Note: Install a new gasket. Use new
flanged locknuts and tighten them
down to 8.5 Nm (6.2 Ibf.ft).
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