Operation Manual
38
English / USA
MS 361 C
Chain brake maintenance
The chain brake is subject to normal 
wear and tear. It must therefore be 
checked and serviced regularly by 
trained personnel (e.g. STIHL dealer) at 
the following intervals:
At temperatures below 50 °F, 
preheat the carburetor as follows:
: Use the combination wrench or a 
screwdriver to ease the shutter (1) 
out of the summer position (s).
: Fit the shutter in the winter position 
(r at top) – as shown in the 
illustration. 
Heated air from around the cylinder now 
flows around the carburetor – this helps 
prevent carburetor icing. 
: At temperatures above 68 °F:
Return the shutter to the summer 
position (s).
This is essential to avoid engine 
running problems and overheating.
At temperatures below 14°F
It is advisable to use the cover plate 
mounting kit (special accessory) in 
extremely cold operating conditions 
(temperatures below 14 °F, in powder or 
drifting snow).
If engine idle speed is erratic or 
acceleration is poor:
: Turn low speed screw (L) 1/4 turn 
counterclockwise.
It is usually necessary to change the 
setting of the idle speed screw (LA) 
after making adjustments to the low 
speed screw (L) – see “Adjusting the 
Carburetor”.
Full-time professional 
usage: every 3 
months
Semi-professional 
usage (farm and 
construction industry): every 6 
months
Hobby and occasional 
usage: every 12
months
Winter Operation
213BA024 KN
1
213BA025 KN










