English / USA
Checking the Spark Plug
If engine is down on power, difficult to
start or runs poorly at idling speed, first
check the spark plug.
:
Remove spark plug – see "Starting /
Stopping the Engine".
:
:
Clean dirty spark plug.
Check electrode gap (A) and
readjust if necessary – see
"Specifications".
:
:
Remove the screw (4).
:
Use only resistor type spark plugs
of the approved range.
Lift spark arresting screen (5) and
pull it out.
Rectify problems which have caused
fouling of spark plug:
:
Clean spark arresting screen if
necessary – if screen is damaged or
coked up, fit a new one.
:
:
:
Too much oil in fuel mix.
Dirty air filter.
:
:
:
Refit the spark arresting screen.
Insert screw and tighten down.
Fit the shroud.
Unfavorable running conditions,
e.g. operating at part load.
Wrong fuel mix (too much engine oil in
the gasoline), a dirty air filter and
Fit a new spark plug after approx.
100 operating hours
unfavorable running conditions (mostly
at part throttle etc.) affect the condition of
the spark plug. These factors cause
deposits to form on the insulator nose
which may result in trouble in operation.
or earlier if the electrodes are badly
eroded.
24
HL 90 K
| Categories | Hedge Trimmer Manuals, STIHL Hedge Trimmer Manuals, Trimmer Manuals |
|---|---|
| Tags | STIHL HL 90 |
| Download File |
|
| Language | English, Español |
| Product Brand | STIHL. Stihl Inc, USA - Corporate phone: (757) 486-9100. International Support Information: http://stihl.com Email: info@stihl.com, Trimmer |
| Document File Type | |
| Publisher | stihl.com |
| Wikipedia's Page | Stihl |
| Copyright | Attribution Non-commercial |
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