Checking The Blade - AS MOTOR AS 901 SM Operating Instructions Manual

Checking the blade

Danger!
Improperly mounted and main-
tained blades pose a severe injury
hazard.
Work at the blade shall only be
performed by an authorised service
centre.
Wear sturdy gloves when you
check or change the blades.
Work on the blade requires special qualifica-
tions because an unbalance test is required
and the torques must be observed.
Check the blade and all fastening parts for
wear, damage and cracks
– before and after each mowing operation.
– when there are significant changes.
All blade parts shown and their fastening parts
must be changed
– when damage or cracks were found.
– At least once a year or every 50 operating
hours, regardless of whether there is wear or
not. Material wears out, gets cracks which
can endanger persons or property.
Vibrations indicate that
– the blade is worn excessively on one side or
– damage of motor or cutting unit mount (e.g.
rubber elements).
Improperly sharpened blades increase the
device load and result in fatigue cracks and
breakage.
Ejected pieces can cause severe injuries.
Changing the flail blades
1 2
New blade
Replace blade
- broken
- bent
- worn on both sides
Turn over blade
- worn on one side
The flail blades (1) can be mounted on both
sides. Turn over all flail blades together when:
– a side is worn and
– the other side of the flail blade has not been
used yet.
Replace the flail blade when the blade is:
– broken,
– torn,
– bent or
– worn on both sides.
In case of uneven wear, there is a risk of un-
balance.
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