Stihl SR 420 Instruction Manual page 11

Mounting the Extension Tube
1
Rotate the pleated hose (1) as far
N
as stop.
Swing control handle (2) to
N
horizontal position.
3
1
Push the extension tube (3) into the
N
pleated hose (1) as far as it will go.
The metering unit (4) must point in
N
the same direction as the control
handle.
SR 420
2
Tighten down the clamp screw (5)
N
(see "Adjusting the Control
Handle").
Fitting the Liquid Hose
4
Secure liquid hose (1) from the
N
container to the pleated hose with
the retainer (2).
5
2 1
1 4 4
Use hose clips (4) to secure
N
hose (1) and hose (3) to the stubs
on the stop cock.
Close the stop cock (move lever to
N
vertical position).
Fill up with water and check all hose
N
connections for leaks.
Adjusting the Control Handle
2
1
Put the machine on your back.
N
Loosen the clamp screw (1).
N
Move the control handle (2) along
N
the tube to the most comfortable
position.
Tighten down the clamp screw (1).
N
English
3
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