Choke Shaft / Choke Shutter - Stihl TS 420 Manual

1
: Turn the air valve shaft (1)
approx. ¾ turn counterclockwise
until the flat side faces
downwards. The air valve shaft is
now pre-tensioned.
1
– Hold the air valve shaft in this
pre-tensioned position.
: Slide the air valve (1) into the slit
in the air valve shaft with the hole
(arrow) on the left, the lettering
facing downwards.
TS 410, TS 420
2
1
– Coat the screw with screw
locking paint, b 14.
: Insert a new screw (1) on the flat
side and screw it in slightly.
– Close the air valve (2) and center
it in the hole in the air valve
housing.
– Tighten down the screw.
3
4
1
– Undo the screw (3) slightly and lift
lever (4) slightly.
– Attach the rod (1).
– Retighten screw (3); lever (4)
must be located in the hole.
: Fit the E-clip (2).
– Check correct functioning and
easy movement.
– Reassemble remaining parts in
reverse order.
12.3.6 Choke shaft / choke
shutter
If actuation of the choke shaft is stiff
and/or the choke shutter cannot be
opened or closed properly:
– Remove the carburetor, b 12.2.
– Troubleshooting on the
carburetor, b 4.5.
– Turn the choke shaft until the
choke shutter is closed.
: Remove the screw (arrow).
2
1
: Turn the choke shaft a little and
take out the choke shutter (1).
85