Stihl 009 Instruction Manual - Page 36

Top: Chain brake disengaged Bottom: Stop switch in position 1 2 8. Disengage the chain brake before starting cutting work by pulling the hand guard back toward the handlebar . 9. The engine is shut down by sliding the stop switch to . 125BA021 LA 125BA020 LA The choke lever is mechanically connected to the carburetor's choke valve. The choke valve is closed when the choke lever is on and open when the choke lever is moved away from . When starting a cold engine only keep the choke slide in the position until the engine begins to fire. Even if you do not hear the engine firing, always open the choke after pulling the starter rope three or four times. If you leave the choke slide in the position, the combustion chamber will flood and stall the engine. If you have moved the choke slide away from after the engine has fired or after three or four pulls on the starter rope and the engine still refuses to start, you can assume that the combustion chamber is already flooded. In such a case, remove and dry off the spark plug. With the spark plug still removed and the stop switch on , clear the combustion chamber by cranking the engine several times on the starter. When you now try to start, move the choke lever away from and set the throttle trigger to the start position. The stop switch should again be moved away from . In very cold weather only open the choke partially after the engine begins to fire - move choke lever to about the center position. Allow engine to warm up for a brief period with the throttle in the start position. Then move choke lever completely away from and disengage the starting throttle lock. A new engine or one which has been run until the fuel tank is dry will not start first time after fueling because the fuel pump only begins to deliver sufficient fuel of the carburetor after the engine has been turned over a few times on the starter.