Stihl SR 430 Manual page 101

1
– Hold the spring (arrow) to
prevent it popping out.
: Take the valve (1) out of the
handle housing.
1
: Pull off the tubes (1).
1
2
: Pull the spring (1) and piston (2)
out of the valve.
100
– Remove and inspect the
O-rings (arrows) – they must not
damaged in any way, renew if
necessary.
The tubes have lugs of different
widths to make them non-
interchangeable.
– Lubricate the O-rings with
grease, b 13, before installing
the piston.
– Reassemble in the reverse
sequence.
1
: Place the valve (1) with spring in
its seat (arrow).
1
1
: Push the valve (1) in the direction
of the spring seat until it engages
the guides (arrows) in the handle
housing.
1
– Hold the valve (1) in the handle
housing.
: Line up the piston and push the
rod (2) into the hole (arrow).
SR 430, SR 450
2