Stihl FC 90 - Fuel Tank; 7 Engine

31Series 4180 Powerhead
– Drain the fuel tank.
– Remove the rewind starter,
b 5.2
– Remove the shroud, b 5.7
– Remove the air filter, b 6.1
– Pull the fuel hoses off the
carburetor, b 6.2.2
– Pry the fuel hose with pickup
body out of the tank, b 6.6.2
– Pry the tank vent out of the tank,
b 6.5.2
– Unscrew the fuel filler cap and
remove it together with the cap
retainer.
: Pull out the fuel tank with sleeves
(1 and 2).
1
VA
249RA039
2
: Remove the sleeves (1 and 2).
Reassemble in the reverse
sequence.
The new fuel tank is supplied with a
tank vent with return line and the
required hose.
VA
249RA040
1
2
If the new fuel tank is combined with
an original filter housing without
stub for the return line (b 6.1), pull
the hose off the tank vent,
b 6.5.2.
– Test the fuel tank for leaks,
b 6.5.1
Always check and, if necessary,
repair the fuel system, carburetor,
air filter and ignition system before
looking for faults on the engine.
Lubricate all moving parts of the
engine with oil.
Exceptions are described
separately.
6.6.3 Fuel Tank 7. Engine