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".
:
Use a 15 mm socket wrench to
unscrew the spark arresting
screen (3).
:
Use only resistor type spark plugs
of the approved range.
Rectify problems which have caused
fouling of spark plug:
:
:
Clean the spark arresting screen.
If the spark arresting screen is
damaged or severely coked up,
fit a new one.
:
:
:
Too much oil in fuel mix.
Dirty air filter.
Unfavorable running conditions,
e.g. operating at part load.
:
:
:
Refit the spark arresting screen.
Fit the exhaust pipe.
Fit the screws.
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.
HS 81 R, HS 81 T
21
| Categories | Hedge Trimmer Manuals, STIHL Hedge Trimmer Manuals, Trimmer Manuals |
|---|---|
| Tags | STIHL HS 81 |
| 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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