Engine; Muffler - Stihl MS 261 User Manual

6.

Engine

6.1

Muffler

Always check and, if necessary,
repair the fuel system, carburetor,
air filter and ignition system before
looking for faults on the engine.
– Troubleshooting, b 3
– Remove the shroud, b 6.4
Before removing the muffler, set the
piston to top dead center to ensure
that no dirt falls into the cylinder.
1 1
: Pry out the plugs (1)
– do not re-use plugs that have
been removed.
1 1
3
2
: Take out the screws (1) and (2).
: Remove the muffler (3), check
and replace if necessary.
MS 261, MS 261 C
: Remove the exhaust gasket (1).
– Remove and install the spark
arresting screen – see instruction
manual.
: Check the insulating mat (1) and
replace it if necessary.
2
: Position new insulating mat (1)
as follows
a = flush
b = 15 mm
: Bond new insulating mat (1) in
position.
Installing
1
– Position the machine upright.
– Cover the exhaust port. Remove
1
: Check and clean the sealing
Always replace components with
damaged sealing faces.
1
– Position the exhaust gasket (1)
: Fit the exhaust gasket (1) and
any dirt from around the cylinder
and exhaust port.
faces (arrows), remove any
gasket residue – make sure there
is no gasket residue or dirt in the
exhaust port.
1
so that the tabs (arrows) point
towards the cylinder.
use the tabs (arrows) to line it up
on the cylinder.
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