Stihl 4144 Series - 8.8 Tank Vent; 8.8.1 Testing

60 Series 4144 Components FC, FS, KM
: Fit the new gasket (1) over the
guides (arrows) on the spacer
flange.
: Push the spacer flange (1)
against the cylinder, engage the
guides in the inlet bores (arrows).
– Fit the connector tag (1).
: Insert screws (arrows) and
tighten them down firmly.
– Reassemble all other parts in the
reverse sequence.
– Tightening torques, b 3.4
8.8 Tank Vent
545RA210 TG
1
296RA274 TG
1
545RA212 TG
1
8.8.1 Testing
If problems occur on the carburetor
or the fuel supply system, also
check and clean the tank vent and
replace it if necessary. Check
function by performing pressure and
vacuum tests on the tank via the fuel
hose.
– Open the fuel tank cap and drain
the fuel tank.
– Collect the fuel in a clean
container, b 1
– Close the tank cap.
– Remove the rewind starter,
b 6.2
– Remove the shroud, b 5.1
: Pull the fuel suction hose (1) off
the stub (arrow).
– Close the tank cap.
545RA213 TG
1
: Push the nipple (1)
0000 855 9200 into the fuel
suction hose (arrow).
Vacuum test
: Push the ring (1) to the left and
connect the pump (2)
0000 850 1300 to the nipple
(arrow)
– subject the fuel tank to a
vacuum.
Equalization of pressure takes
place via the tank vent. There must
be no buildup of vacuum in the tank.
– Clean the area around the tank
vent.
– Install new tank vent if
necessary,b 8.8
545RA214 TG
1
545RA215 TG
1 2