Spark Arresting Screen* In Muffler; Checking The Spark Plug - Stihl MS 191 T Instruction Manual

English / USA
If you make the mixture too lean,
maximum permissible engine speed
will be exceeded and there is a risk
of serious engine damage.
36
Spark Arresting Screen*
in Muffler
1
2
3
If the engine is low on power, check the
spark arresting screen* in the muffler.
: Take out the screw (1).
:
Remove the cover (2) and spark
arresting screen (3).
:
Clean the spark arresting screen if
necessary.
:
If the screen is damaged or coked
up, install a new one.
: Refit the spark arresting screen and
cover and secure with the screw.
* see "Guide to Using this Manual"

Checking the Spark Plug

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.
MS 191 T