Stihl 66

At temperatures below +10 °C/+50°F -
preheat carburetor as follows:
•
••
•
Remove the carburetor box cover.
Inside the carburetorbox cover:
Move shutter (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 carburetror icing.
At temperatures above +20 °C/+70°F:
Return shutter to summer position.
This is essential to avoid engine running
problems and overheating.
Machines with HD filter:
•
••
•
Install a standard filter element in
place of the HD filter.
•
••
•
Refit the carburetor box cover and
tighten down the knob.
At temperatures below -10°C (+14°F):
It is advisable to fit the cover plate* on
the fan housing if you use your saw in
extremely cold conditions (temperatures
below -10°C/+14°F, in powder or drifting
snow).
The cover plate blanks off the lower
slots in the fan housing to help prevent
snow being sucked into the machine.
When the cover plate is fitted, the shutter
in the carburetor box cover must be
moved to the winter position.
•
••
•
If your saw is very cold (frost or ice
on machine), start the engine and
keep it at a high idle speed (with
chain brake disengaged) until it
reaches normal operating
temperature.
•
••
•
In the event of engine running
problems, first check that conditions
for use of intake air preheating still
apply.
*Special accessory
Switching on electric handle heating
•
••
•
Move switch on front handle to #
•
••
•
Move switch back to $
to switch off heating.
There is no risk of overheating
during long periods of operation.
The whole heating system is
maintenance-free.
*Special accessory
1
2
137BA014 KN
137BA015 KN
Winter Operation
137BA016 KN
Electric Handle
Heating
066 37