Spark Arresting Screen In Muffler - Stihl TS 400 Instruction Manual

The carburetor has been adjusted for
optimum performance and fuel
efficiency in all operating states.
Standard setting
L
LA
Switch off engine
N
Check the air filter and clean or
N
replace it if necessary
Check spark arresting screeen
N
(present only in some countries)
and clean or replace it if necessary
Let the engine warm up
N
Carefully turn the low speed
N
adjusting screw (L) clockwise as far
as possible, then open it 1 turn
counterclockwise
Setting the idle speed
L
LA
Whenever the low speed screw (L) has
been adjusted, at least one adjustment
must also be made on the idle speed
adjusting screw (LA).
TS 400
Engine stops when idling
Make standard setting
N
Turn the idle speed adjusting
N
screw (LA) clockwise until the
abrasive wheel begins to turn – then
turn it back 1/4 turn
Abrasive wheel runs when idling
Make standard setting
N
Turn the idle speed screw (LA)
N
counterclockwise until the abrasive
wheel stops running – then turn
another 1/2 turn in the same
direction
Erratic idling behavior, poor acceleration
Idle speed setting is too lean (e. g., at
low ambient temperature).
Turn the low speed screw (L)
N
(starting from the standard setting)
1/4 turn counterclockwise
Engine stops during swinging or
transition from full throttle to idle
Turn the low speed screw (L)
N
(starting from the standard setting)
1/4 turn clockwise
Spark Arresting Screen in
Muffler
In some countries, the mufflers are fitted
with a spark arresting screen.
If engine performance deteriorates,
N
check the spark arresting screen in
the muffler
Wait until engine has cooled completely
before performing the following
operations.
1
Use a suitable tool to remove the
N
clip (1)
Remove the spark arresting
N
screen (2)
Clean the soiled spark arresting
N
screen
If the screen is damaged or heavily
N
carbonized, fit a new one
English
2
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