Av Spring In The Support; Av Spring At The Bottom; Of The Crankcase - Stihl TS 420 Manual

10.2

AV spring in the support

The AV spring is located between
support and crankcase and must be
replaced if defective.
– Remove the support, b 10.6.
: Remove the screw (arrow).
: Take out the AV spring (1).
– Examine the AV spring, replace if
necessary.
1
: Slide the AV spring (1) as far as
possible into the mount (arrow)
and hold it in position. The AV
spring is prevented from twisting.
68
: Insert and tighten down the screw
(arrow).
1
– Install the support, b 10.6.
– Tightening torques, b 3.5.
10.3

AV spring at the bottom

of the crankcase

The AV spring is secured
underneath the machine and must
be replaced if defective.
: Remove the screw (arrow).
– Remove the handlebar, b 10.5.
1
: Pull the AV spring (1) out of the
handlebar.
– Examine the AV spring, replace if
necessary.
1
: Push the AV spring (1) into the
handlebar so that the tab (2)
engages in the notch (arrow).
– Mount the handlebar on the
machine, b 10.5.
The AV spring must be screwed in
as far as possible.
: Push the bearing plug into the
mount (arrow) and hold it in
position.
TS 410, TS 420
2