Spark Arresting Screen In Muffler - Stihl ms 260 Instruction Manual

Chain runs when engine is idling
: Carry out standard setting on low
speed screw (L).
: Turn the idle speed screw (LA)
counterclockwise until chain begins
to run – then turn it another
in the same direction.
Erratic idling behavior, poor
acceleration
(even though standard setting of low
speed screw is correct)
Idle setting is too lean.
: Turn the low speed screw (L)
counterclockwise (no further than
stop) until engine runs and
accelerates smoothly.
It is usually necessary to change the
setting of the idle speed screw (LA)
after every correction to the low speed
screw (L).
MS 260
Fine Tuning for Operation at High
Altitude
A slight correction of the setting may be
necessary if engine power is not
satisfactory when operating at high
1 altitude:
/ turn
4
: Check the standard setting.
: Warm up the engine.
: Turn high speed screw (H) slightly
clockwise (leaner). On models with
3
H = / , turn no further than stop.
4
If the setting is too lean there is
a risk of engine damage due to
insufficient lubrication and
overheating.
English / USA
Spark Arresting Screen*
in Muffler
1
If the engine is low on power, check the
spark arresting screen* in the muffler.
: Take out the screw (1).
2
: Pull out spark arresting screen (2).
: Clean spark arresting screen if
necessary.
: If screen is damaged or coked up, fit
a new one.
: Refit the spark arresting screen.
: Insert screw and tighten it down.
* See "Guide to Using this Manual"
49