© STIHL Inc., Virginia Beach, VA     2013 US/STR
confidential
5. Operator Controls
 The interlock should 
be sticking up out of 
the handle, and it 
must be depressed 
flush with the handle 
before the throttle 
trigger will move
 Be sure the throttle 
moves freely
© STIHL Inc., Virginia Beach, VA     2013 US/STR
confidential
5. Operator Controls
 The throttle must be squeezed all the way open before the 
Master Control Lever™ can be actuated to the full choke 
position, then release the throttle and the Master Control 
Lever™ should stay in the choke position