Stihl MS 261 C-Q Manual De Instrucciones página 43

Turn the high speed screw (H)
N
counterclockwise as far as stop (no
more than 3/4 turn).
Turn the low speed screw (L)
N
carefully clockwise as far as stop,
then turn it back 1 full turn.
Readjust idle
Engine stops while idling
Open the low speed screw (L) one
N
full turn.
Turn the idle speed screw (LA)
N
clockwise until the chain begins to
run – then back it off 1 full turn.
Chain runs when engine is idling
Open the low speed screw (L) one
N
full turn.
Turn the idle speed screw (LA)
N
counterclockwise until the chain
stops running – then turn it another
1 turn in the same direction.
If the chain continues moving when the
engine is idling, have your saw checked
and repaired by your servicing dealer.
Erratic idling behavior, poor acceleration
(even though low speed screw is open
one turn)
Idle setting is too lean: Turn the low
N
speed screw (L) counterclockwise
until the engine runs and
accelerates smoothly.
MS 261 C-Q
It is usually necessary to change the
setting of the idle speed screw (LA) after
every correction to the low speed
screw (L).
Fine tuning for operation at high altitude
A slight correction of the setting may be
necessary if engine does not run
satisfactorily:
Turn high speed screw (H)
N
clockwise (leaner) – no further than
stop.
If the setting is too lean there is a risk of
engine damage due to insufficient
lubrication and overheating.
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
2
Take out the screw (1).
N
Pull out the spark arresting
N
screen (2).
Clean the spark arresting screen. If
N
the screen is damaged or heavily
carbonized, fit a new one.
Refit the spark arresting screen.
N
Insert the screw and tighten it down.
N
English
41