Stihl 038 - Master Control

Master Control
The Master Control lever (1) controls the various engine
functions. Depending on its position, it acts on the carbu-
retor’s choke valve, the throttle trigger (2) or the ground
contact (for stopping the engine).
Note the following when operating the Master Control
lever:
The position between “START” and “STOP” is the normal
operating position.
The safety throttle lock (3) must be pressed down before
the Master Control lever (1) is moved from the normal
operating position to “START”. It is possible to move from
“START” to “CHOKE” or vice versa without touching any
other controls.
In the “START” position the choke valve is open and the
throttle trigger is in the starting-throttle position. When in
this position, the Master Control lever (1) is locked by the
throttle lever and must not be forced into the normal
operating position. It returns automatically to the normal
operating position as soon as the throttle trigger (2) is
squeezed.
In the “CHOKE” position (cold start) the choke valve is
closed and the throttle trigger is in the starting-throttle
position.
In the “STOP” position the ground contact engages the
contact spring — this cuts out the ignition system.
Top: Choke valve activated by Master Control lever
(Choke position)
Center: Master Control lever locked by throttle lever
(start position)
Bottom: Ground contact touching contact spring (stop position)
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