Winter Operation - Stihl MS 460 Instruction Manual

Winter Operation

Pre-heat carburetor at temperatures
under +50 °F (10 °C)
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2
Remove the carburetor box cover
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in the carburetor box cover, move
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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.
at temperatures above +68 °F
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(+20 °C): always return the slide to
the summer position –
otherwise risk of engine malfunction due
to overheating!
MS 460
Machines with HD filter:
Replace the HD filter with a
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standard filter
Replace the carburetor box cover
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and tighten the knob
At temperatures under +14 °F (-10 °C)
Under extreme winter conditions
(temperatures below 14 °F (-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
Turn the low speed screw (L)
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1/4 turn counterclockwise
Whenever the low speed screw (L) has
been adjusted, it is usually also
necessary to adjust the idle speed
adjusting screw (LA), see "Setting the
carburetor".
When the cover plate is mounted, the
slide must be in winter position in the
carburetor box cover.
if the chain saw is extremely cold
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(frost formation) – after starting,
bring the engine up to operating
temperature at increased idle speed
(disengage chain brake!)
if engine trouble occurs, first check
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whether use of intake air pre-
heating is necessary
English
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