Fixed Jet; Pump Diaphragm - Stihl MS 341 Shop Manual

12.3.3 Fixed Jet

1
– Remove the metering diaphragm
– b 12.3.1
: Use a suitable screwdriver to
unscrew the fixed jet (1).
Take care not to damage the jet.
Reassemble in the reverse
sequence.
MS 341, MS 361, MS 361 C

12.3.4 Pump Diaphragm

1
– Remove the carburetor –
b 12.2.1
: Take out the screw (arrow).
: Remove the end cover (1).
1 2
: Carefully remove the gasket (1)
and pump diaphragm (2) from the
end cover or carburetor body.
: Carefully separate the diaphragm
and gasket.
– Inspect diaphragm for damage
and wear, install a new gasket.
The diaphragm material, inlet and
outlet valves are subjected to
continuous alternating stresses and
eventually shows signs of fatigue,
i.e. the diaphragm distorts and
swells and has to be replaced.
1
: Inspect the fuel strainer (1) for
contamination and damage. If
necessary, use a needle to
remove it from the carburetor
body and clean or replace.
Reassemble in the reverse
sequence.
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