Husqvarna Rider ProFlex 21 II Workshop Manual page 59

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6. Check that the dome nut for the screw for
the chain segment is in position for
maximum effect on the microswitch.
Adjust as needed with the adjustment
screws (1+2) on the drive disc. Repeat
step 5 if needed.
7. Adjust the microswitch so that it is definitely
activated by the dome nut, but allows extra
motion (it must not bottom out).
8. Check that the spring places the blade
brake against the belt pulley.
9. Raise the cutting unit completely by
pulling the mechanical lifting lever.
10. Adjust with the adjustment screw (3)
against the cylindrical pin so that a
distance of 38±2 mm is maintained
between the frame structure and the
outermost corner of the belt adjuster
arm, see illustration. This measurement
applies to new belts and as a starting
point for used belts.
11. Lower the cutting unit completely to the
ground.
12. Check that the connecting rod has play
along the oblong groove in the belt
adjuster. Adjust with the adjustment
screw (3) against the cylindrical pin as
needed (used belt).
13. Check that all lock nuts are tight.
14. Replace the plastic cover over the
hydraulic valve block.
REPAIR INSTRUCTIONS
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Microswitch
Blade brake
Basic measurements, belt adjuster
Connecting rod in the belt adjuster
8009-381
8009-383
8009-401
8009-384
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