English

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:

Full-time usage:

every 3

 

months

Part-time usage:

every 6

 

months

Occasional usage:

every 12

 

months

Starting / Stopping the Engine

Positions of the Master Control lever

STOP

0

001BA140 KN

Stop 0 – engine off – ignition is switched off

Run F– engine is running or can start

Warm start n – this position is for starting the warm engine – the master control lever returns to run when the throttle trigger is squeezed

Cold start l– this position is for starting the cold engine

Adjusting the Master Control lever

To adjust the Master Control lever from run Fto cold start l, press and hold down the throttle trigger lockout and throttle trigger simultaneously – set master control lever.

To set the master control lever to warm start n, first set it to cold start l, then push the master control lever into the warm start nposition.

Switching to the warm start nposition is only possible from the cold start l position.

Simultaneously pressing the throttle trigger lockout and blipping the throttle trigger causes the master control lever to jump from the warm start nposition to run F.

To switch off the engine, set the master control lever to Stop 0.

Position cold start l

–if the engine is cold

–if the engine stalls during opening of throttle after starting

–If the fuel tank has run empty (engine stalled out)

Position warm start n

–if engine is warm (once the engine has been running for approx. one minute)

–When the engine has turned over for the first time

–After ventilation of the combustion chamber, if the engine was flooded

32

MS 170, MS 170 C, MS 180, MS 180 C