Stihl MS 230 Service Manual

12 MS 210, MS 230, MS 250
4.5 Carburetor
Condition Cause Remedy
Carburetor floods;
engine stalls
Inlet needle not sealing. Foreign
matter in valve seat or cone
damaged
Remove and clean or replace the
inlet needle, clean the fuel tank,
pickup body and fuel line if
necessary
Inlet control lever sticking on
spindle
Free off 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 design position)
Set inlet control lever flush with top
edge of housing or bottom of
metering chamber
Poor acceleration Idle jet too lean Back off low speed screw (L)
slightly
Main jet too lean Back off high speed screw (H)
slightly
Inlet control lever too low
(relative to design position)
Set inlet control lever flush with top
edge of housing or metering
chamber face
Inlet needle sticking to valve seat Remove inlet needle, clean and
refit
Connecting bore to atmosphere
blocked
Clean bore
Diaphragm gasket leaking Fit a new diaphragm gasket
Metering diaphragm damaged or
shrunk
Fit a new metering diaphragm

Stihl MS 230 Specifications

General

Brand	Stihl
Model	MS 230
Category	Chainsaw
Language	English