Winter Operation; Starting / Stopping The Engine - Stihl MS 280 C-Q Instruction Manual

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Winter Operation

Pre-heat carburetor at temperatures
below -10 °C
1
N
Using a suitable screwdriver, turn
the slide from summer
position (1) s to winter position r
– the slide must engage audibly
The slide can be turned by hand after
removing the carburetor box cover.
Heated air is now drawn in from around
the cylinder and circulates around the
carburetor – this helps prevent
carburetor icing.
N At temperatures above +20 °C:
always return the slide to the
position for summer operation s
otherwise risk of engine
malfunction due to overheating!
24
At temperatures below -10 °C
Under extreme winter conditions
(temperatures below -10 °C, powdered
or drifting snow), it is recommended to
use the "cover plate mounting kit"
(special accessory).
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
adjusting screw (LA), see "Setting the
carburetor".
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!)
Cover plate
The cover plate (special accessory)
keeps out powdered or drifting snow.
When the cover plate is used, the slide
must be in the winter position.
If engine trouble occurs, first check
whether use of the cover plate is
necessary.
Starting / Stopping the
Engine
Positions of the Master Control lever
STOP
0
Stop 0 – engine off – ignition is switched
off
Operating position F – engine is
running or can start
Warm start n – this position is for
starting the warm engine – the Master
Control lever returns to the operating
position when the throttle trigger is
squeezed
Cold start l – this position is for
starting the cold engine
MS 280 C-Q