English
Checking the Spark Plug
Fit a new spark plug after approx. 100
operating hours or earlier if the
electrodes are badly eroded.
Checking the Spark Plug
If the engine is down on power, difficult
to start or runs poorly at idle speed, first
check the spark plug.
Removing the Spark Plug
N
Shut down the engine.
1
1
The spark plug boot (2) is located in the
cap (1).
Wrong fuel mix (too much engine oil in
the gasoline), a dirty air filter and
To reduce the risk of fire and burn
injury, use only spark plugs
authorized by STIHL. Always
press spark plug boot (2) snugly
onto terminal (1) of the proper
size. (Note: If terminal has
detachable SAE adapter nut, it
must be attached.) A loose
connection between spark plug
boot and ignition wire connector in
the boot may create arcing that
could ignite combustible fumes
and cause a fire.
The cap (1) protects the spark
plug from damage. Do not operate
the power tool without the cap –
replace a damaged cap.
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.
N
N
Pull off the spark plug boot (2)
together with the cap (1).
N
N
Clean dirty spark plug.
Unscrew the spark plug (3).
Check the electrode gap (A) and
readjust if necessary – see
"Specifications."
If the cap becomes detached when you
pull off the spark plug boot, see
"Installing the Spark Plug."
N
Use only resistor type spark plugs of
the approved range.
Rectify problems which have caused
fouling of spark plug:
N
N
N
Too much oil in fuel mix.
Dirty air filter.
Unfavorable running conditions,
e.g. operating at part load.
2
6
FS 40, FS 40 C, FS 50, FS 50 C
| Categories | Blower Vacuum and Sweeper Manuals, STIHL Trimmer Manuals, Trimmer Manuals |
|---|---|
| Tags | STIHL FS 40, STIHL FS 50 |
| 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 |
(0 votes, average: 0 out of 5)