felling cut. The chain brake will operate only if it has been properly maintained and the hand guard has not been modified in any way.
Check operation of chain brake
Before starting work: Run engine at idle speed, engage the chain brake (push hand guard toward bar nose). Accelerate up to full throttle for no more than 3 seconds – the chain must not rotate. The hand guard must be free from dirt and move freely.
Chain brake maintenance
The chain brake is subject to normal wear. It is necessary to have it serviced and maintained regularly by trained personnel, such as your STIHL servicing dealer, at the following intervals:
every 3 | |
| months |
every 6 | |
| months |
Occasional usage: | every 12 |
| months |
Winter Operation
At temperatures below +50 °F (10 °C):
1
2 | KN | |
171BA022 | ||
|
NRemove the carburetor box cover
Nin the carburetor box cover, move the slide from summer position (1) to winter position (2)
Heated air is now drawn in from around the cylinder and mixed with cold air – this helps prevent carburetor icing.
Above +70 °F (20 °C), always return the slide to the position for "summer operation" again! Risk of engine malfunction – overheating!
Machines with HD filter
NReplace the HD filter with a standard filter
NReplace the carburetor box cover and tighten the knob
English
At temperatures below 14 °F
171BA002 KN
Under extreme winter conditions (temperatures below 14 °F
This causes only warm air from the vicinity of the cylinder to be taken in – prevents icing of air filter and carburetor.
Nif the chain saw is extremely cold (frost formation) – after starting, bring the engine up to operating temperature at increased idle speed (disengage chain brake!)
When used with
MS 880 | 29 |