Stihl BR 550 Technical Guide - Page 3

Technical Information 08.2005 Page 3 1.2 Control handle For simplified starting, the choke does not have to be set on the control handle. Since the setting lever does not lock at "Engine Stop" (0), the ignition system is continuously ready to operate, and the blower can be started at any time. 1.3 Simplified starting All operating elements for starting are on a central control area. Set the starting throttle position with the choke knob. The choke knob automatically springs back into operating position after the throttle trigger is actuated. 1 2 . Setting lever (1) . Throttle trigger (2) Engine stop (0) . The ignition system is sent a stop pulse to shut off the blower. . The setting lever does not lock but rather springs back - the ignition system is automatically ready to operate. Operating position (#) . The engine is running or can start - the throttle trigger can be smoothly actuated. Set locked position (C) . The throttle trigger can be locked at three levels: 1/3 gas, 2/3 gas and full throttle. . To release the locked position, set the setting lever to #. . Press the fuel pump bulb at least five times. . Setting the choke knob: When the engine is cold l When the engine is hot n . Pull the cord until the engine starts; at the latest, set the choke knob to starting throttle position n after the third time the cord is pulled. . Set the choke knob to the starting throttle position n . Continue cranking until the engine runs. To switch to idle: . Pull the throttle trigger - the choke knob automatically jumps to operating position # or . Set the choke knob manually to # TI_08_2005_11_01_02.fm