Stihl FC 90 - Stopping the engine; During break-in period; During Operation; After Finishing Work

21Series 4180 Powerhead
– Remove the air filter, b 6.1
: Pull the fuel hoses (1 and 2) off
the elbow connectors.
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249RA013
2
1
: Disconnect throttle cable nipple
(1) from slotted pin (2) on the
throttle lever.
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249RA014
2
1
: Pull the impulse hose (1) off the
metering diaphragm.
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1
: Pull off the carburetor.
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249RA017
: Remove the gasket (1).
: Disconnect the cable (2).
If spacer flange shows signs of
damage or cracks, install a new
one,
b 7.10
VA
249RA018
2
1
Reassemble in the reverse
sequence.
– Remove the shroud, b 5.7.
– Leakage test, b 6.2.1
: Take out the screws (1).
– Remove end cover together with
rubber pump bulb.
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1
: Remove rubber bulb from the end
cover.
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249RA109
6.2.2 Removing and Installing 6.2.3 Manual Fuel Pump