Single Lever Master Control / Handle System; Switch Shaft - Stihl MS 440 Service Manual

10. Single lever master
control / handle system
10.1

Switch shaft

STOP
1
O
2
I
3
4
The master control lever moves the
switch shaft to select the required
function.
The following positions can be
selected with the master control
lever:
"STOP" (1) closes the short-circuit
contact, interrupts ignition.
"RUN" (2) is the normal operating
position: the engine is running or
may start up.
"START" (3) is the starting throttle
position / choke shutter open (warm
start).
"CHOKE" (4) is the starting throttle
position / choke shutter closed (cold
start).
– Disconnect the throttle rod from
the carburetor – b 12.2.1
: Unplug the terminal sockets of
the short-circuit wire (1) and
ground wire (2) from the contact
springs.
60
: Remove the screw (arrow) from
the switch shaft.
1
: Carefully ease the switch shaft
out of its left-hand mount (1) and
pull the switch housing (2) out of
the right-hand guide.
1
2
Machines with handle heating
: Remove the switch shaft under
the leads towards the handle
heating element.
Reassemble in the reverse
sequence.
2
: Fit the switch housing in the
guide before pressing the switch
shaft into its mount.
Reassemble the remaining parts in
reverse order.
MS 440, MS 440 C