Spark Arresting Screen In Muffler; Spark Plug - Stihl MS 170 Manual De Instrucciones

English
Turn the idle speed adjusting
N
screw (LD) slowly clockwise until
the saw chain begins to rotate –
then back off 1/2 turn
Saw chain rotates at idle speed:
Turn the idle speed adjusting
N
screw (LD) slowly counterclockwise
until the saw chain stops rotating –
then turn an additional 1/2 turn in
the same direction
WARNING
If the saw chain continues to keep
rotating in idle even after adjustment,
have the chain saw checked by a
servicing dealer.
42
Spark Arresting Screen in
Muffler
In some countries the muffler is
equipped with a spark arresting screen.
If the engine is down on power,
N
check the spark arresting screen in
the muffler.
Wait for the muffler to cool down.
N
1
1
3
4
Take out the screws (1) and remove
N
the cover (2).
Remove the spark arresting screen
N
(3) from the muffler (4).
Clean the spark arresting screen. If
N
the screen is damaged or heavily
carbonized, fit a new one.
Refit the spark arresting screen –
N
place the cover in position and
secure it with the screws.

Spark Plug

If engine is down on power, difficult to
start or runs poorly at idling speed, first
check the spark plug.
Fit a new spark plug after approx. 100
operating hours or earlier if the
electrodes are badly eroded.
Wrong fuel mix (too much engine oil in
the gasoline), a dirty air filter and
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.
Removing the spark plug
Simultaneously press the throttle
N
trigger lockout and throttle trigger
and set the Master Control lever to
cold start l
2
Remove the shroud – see "Shroud"
N
Pull off the spark plug boot
N
Unscrew spark plug
N
MS 170, MS 170 C, MS 180, MS 180 C