61Series 4180 Powerhead
Throttle lever must butt against the 
stop on the carburetor cover when 
the throttle trigger is squeezed as 
far as stop (full throttle), and butt 
against the idle speed screw (LA) 
when the throttle trigger is in the idle 
position.
Check as follows:
: Let go of throttle trigger (idle 
position). The lever (1) must butt 
against the idle speed screw 
(arrow).
: Push down the lockout lever and 
pull the throttle trigger all the way 
(full throttle position). The lever 
(1) must butt against the stop 
(arrow).
– Remove the lockout lever, b 9.1
: Pull slide control off the handle 
molding.
: Remove screws (arrows) from 
clamps.
– Remove the handle molding from 
the drive tube.
: Remove the torsion spring from 
the pivot.
: Take out the switch (1).
Reassemble in the reverse 
sequence.
: Position wire for switch in the 
guide (2).
9.3.3 Checking Adjustment 9.4 Slide Control