Stihl MS 461 Rescue, Instruction Manual

Page: 28 / 52

MS 461
English
26
Pre-heating the carburetor at
temperatures below +10 °C
N
Remove the carburetor box cover
N
in the carburetor box cover, move
the slide (1) from summer position
to winter position (2)
Heated air is now drawn in from around
the cylinder and mixed with cold air – this
helps prevent carburetor icing.
N
At temperatures above +20 °C:
always return the slide to the
summer position –
NOTICE
otherwise risk of engine malfunction due
to overheating!
Air filter system
N
Retrofit new air filter if necessary –
see "Air filter system"
At temperatures under
-
10 °C
Under extreme winter conditions
(temperatures below -10 °C, powdered
or drifting snow), it is recommended to
mount the cover plate (special
accessory) on the fan housing.
The partial covering of the slits in the fan
housing keeps out powdered or drifting
snow.
In case of erratic idling behavior or poor
acceleration
N
Turn the low speed screw (L)
1/4 turn counterclockwise
Whenever the low speed screw (L) has
been adjusted, it is usually also
necessary to adjust the idle speed
screw (LA), see "Setting the carburetor".
When the cover plate is mounted, the
slide must be in winter position in the
carburetor box cover.
N
if the chain saw is extremely cold
(frost formation) – after starting,
bring the engine up to operating
temperature at increased idle speed
(disengage chain brake!)
N
if engine trouble occurs, first check
whether use of intake air pre-
heating is necessary
Mounting the cover plate (special
accessory)
N
Insert cover plate (1) with both tabs
(arrows) and snap it onto the fan
housing
N
Screw in screws (2)
When the mounting kit is used, the
shutter must be in the winter position.
If engine trouble occurs, first check
whether use of the cover plate is
necessary.
Winter Operation
1
2
145BA040 KN
3443BA004 KN
3443BA005 KN