Husqvarna RB150 Workshop Manual page 20

E
Applies to RB 150, 1996 model
The cutting unit does
not rotate.
Does the cutting unit start
in mode "Man" but not in
mode "Auto"?
Yes
Is there 12 V between pin
1 and chassis, and
between pin 2 and
chassis respectively in
switch S1 on the
instrument panel?
Yes
One pin:
Replace S1.
Both pins:
Replace microswitch S6
on the grass discharge
chute.
No pin:
Replace relay K1 (the
upper one).
18 – English
TROUBLE SHOOTING
Is fuse F2 intact?
No
Does the cutting unit start
if microswitch S6 for the
grass collector is shorted?
Replace microswitch S6.
No
Yes
No
Yes
Replace the fuse.
Is there 12 V across
terminals of the clutch?
Yes
Replace the
clutch.
No
Replace switch S4
of the cutting unit.