STIHL 020 T - Arbtalk
STIHL 020 T - Arbtalk
STIHL 020 T - Arbtalk
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Condition<br />
Cause<br />
Remedy<br />
Machine losing chain oil<br />
Bore in pump housing<br />
worn<br />
Fit new pump housing<br />
Oil pump delivers too<br />
little oil<br />
Control screw and/or control<br />
edge on pump piston worn<br />
Bore in pump housing<br />
Fit new control screw and/or<br />
pump piston<br />
Fit new pump housing<br />
worn<br />
2.6 Fuel System<br />
Condition<br />
Cause<br />
Remedy<br />
Carburetor floods;<br />
engine stalls<br />
Inlet needle not sealing.<br />
Foreign matter in valve seat or<br />
cone damaged<br />
Inlet control lever sticking on<br />
spindle<br />
Helical spring not located on<br />
nipple of inlet control lever<br />
Perforated disc on diaphragm is<br />
deformed and presses constantly<br />
against inlet control lever Inlet<br />
control lever too high (relative to<br />
design position)<br />
Remove and clean or replace<br />
inlet needle, clean fuel tank,<br />
pickup body and fuel line if<br />
necessary<br />
Free off inlet control lever<br />
Remove inlet control lever<br />
and refit correctly<br />
Fit new metering diaphragm<br />
Set inlet control lever flush with<br />
bottom of metering chamber<br />
Poor acceleration<br />
Idle jet "too lean"<br />
Main jet "too lean"<br />
Inlet control lever too low<br />
(relative to design position)<br />
Inlet needle sticking to valve<br />
seat<br />
Connecting bore to atmosphere<br />
blocked<br />
Back off low speed adjusting<br />
screw slightly (see Carburetor<br />
Adjustment)<br />
Back off high speed adjusting<br />
screw slightly (see Carburetor<br />
Adjustment)<br />
Set inlet control lever flush with<br />
bottom of metering chamber<br />
Remove inlet needle, clean and<br />
refit<br />
Clean bore<br />
<strong>STIHL</strong> <strong>020</strong> T 10
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