Master Control; Construction And - Stihl 034 Series User Manual

– Take out the annular buffer
mounting screws.
– Use a screwdriver to pry the
annular buffers out of their seats.
To remove the annular buffer at the
ignition side:
– Remove the carburetor box cover
and shroud - see 4.3.
1
– Remove the fan housing -
6.4.
Use a screwdriver to ease the
plug (1) out of the annular buffer.
– Take out the annular buffer
mounting screw.
– Use a screwdriver to pry the
buffer out of its seat.
Note:
The tank housing has to be
removed, see 12.8.1, to replace the
stop buffer.
– Take out the stop buffer and fit a
new one.
– Install the tank housing -
12.8.1.
034, 036, 036 QS
Installing new annular buffers:
Push the annular buffer, washer
first, into the crankcase seat until
groove (1) engages over the
inner housing rib.
– Insert the mounting screw and
tighten it down firmly (see
"Tightening Torques").
– Lubricate the bead of the plug
with oil and then push it into the
annular buffer.
Reassemble all other parts in the
reverse sequence.
see
see
9

Master Control

9.1

Construction and

Function
The main part of the Master Control
is the switch shaft with an integrally
molded multi-function operating
lever, a molded cam and a second
lever. The switch shaft located
forward of the rear handle in the
tank housing and is supported at
1
two points.
The Master Control lever moves the
switch shaft to select the required
function. The following positions
can be selected with the Master
Control lever:
1
2
3
4
STOP (1) (closes short circuit
contact and
interrupts ignition)
RUN (2) (normal operating
position)
START (3) (warm start -
starting throttle/
choke shutter open)
CHOKE (4) (cold start -
starting throttle/
choke shutter
closed)
The cam on the left holds the
connector sleeve of the short circuit
wire and is also the stop for locking
the Master Control lever in the
"RUN" position.
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