Maintenance and cleaning
30
Checking the blade
Warning
Wear or damage at the blades and the fastening elements
can result in the blades or the fastening elements coming
off.
► Check the blades and all fastening elements according
to the following instructions.
Warning
There is a considerable risk of injury due to improperly
mounted and maintained blades.
► Work at blades must be carried out by an authorised
service centre.
Use solid gloves when you check the blade.
Work at the blade requires specific expertise because an un-
balance inspection is necessary and the torques must be ob-
served.
Check the blade and all fastening elements for wear, damage
and cracks
– each time before and after you mow.
– if there are noticeable changes.
All shown blade parts and their fastening elements must be
changed
– if damage or cracks are detected.
– at least once a year or every 50 operating hours, no matter
if wear does exist or not. The material weakens, can suffer
cracks, endangering people and material assets.
Vibrations are an indication that
– the blade is worn excessively or on one side or
– damage to the engine or cutter deck fastening.
Blades that are sharpened improperly increase the workload
of the devices and can result in vibration cracks or breaks.
Ejected broken pieces can cause severe injuries.
Changing the blade
1
1
1
1
2
2
3
3
4
6
5
5
Fig. 17:
Cutting blades (5)
The cutting blades should move easily. To ensure this, al-
ways keep the pivotal point (
3
) clean. Never mow when the
cutting blades are stuck.
Caution!
To prevent unbalance replace or reverse the cutting
blades in pairs only!
The cutting blades are reversing blades. Reverse both cutting
blades
– when one of the wear marks (
1
) was reached.
– when the second cutting edge of the cutting blade has not
been used yet.
It is absolutely necessary to change the cutting blades and
the fastening parts
– when one of the wear marks (
1
) of the second cutting edge
was reached.
– when the thickness of the cutting blade at any point is be-
low 1 mm (exception: cutting edge).
Mulching blade (6)
The mulching blade and the fastening parts must be changed
– when one of the wear marks (
1
) was reached.
– when the thickness of the blade at the rear edge (
2
) or at
any other point is below 1 mm (exception: cutting edge).
Original blade
An original AS-blade is engraved with:
AS GXXXXXXXX or EXXXXX
This corresponds to the spare part number.
