Stihl TS 700, TS 800 - 4.5 Power Unit Troubleshooting

11TS 700, TS 800
4.4 Carburetor
Problem Cause Remedy
Carburetor floods; engine stalls Inlet needle not sealing - impurities
in valve seat or cone damaged
Remove and clean or replace the
inlet needle, clean the fuel tank,
pick-up body and fuel line if
necessary
Inlet control lever sticking on
spindle
Restore easy movement of inlet
control lever
Helical spring not located on nipple
of inlet control lever
Remove the inlet control lever and
refit it correctly
Perforated disc on diaphragm is
deformed and presses constantly
against the inlet control lever
Fit a new metering diaphragm
Inlet control lever too high (relative
to correct installed position)
Set inlet control lever flush with top
edge of housing
Poor acceleration Idle jet too lean Turn low speed screw L
anticlockwise (richer), no further
than stop
Main jet too lean Turn high speed screw H
anticlockwise (richer), no further
than stop
Inlet control lever too low (relative
to correct installed position)
Set inlet control lever flush with top
edge of housing
Inlet needle sticking to valve seat Remove inlet needle, clean and
refit
Diaphragm gasket leaking Fit new diaphragm gasket
Metering diaphragm damaged or
shrunk
Fit new metering diaphragm
Impulse hose damaged or kinked Fit new impulse hose