User manual W3532
- 18 -
Fig.20
Sharpening of blades
An unsharpened blade tears the grass, decreases the filling of
the bag and causes yellowing of the lawn which makes the
lawn unattractive. The blades must be sharpened on both
cutting edges. In the case of dismantling the blades it is
necessary to use working gloves; firmly grip the blade and
unscrew centric bolts M12 (position 1) Fig.22 and cutting bolts
M5 (position 2). It is necessary to sharpen both cutting edges
with a grinding stone with medium graining and to check the
balancing of the blade so that the round bar is inserted in to the
central hole (Fig. 23) and balances the blade.
During assembly, take care that the buckling of the blades was
directed inside the shell of the cutting mechanism. Secure
centric blades M12 against self-loosening with the seal,
LOXEAL 55-03. Tighten bolts with a torque wrench, pos. 1 to
torque moment 80 Nm. Always, before re-mounting the blades
check the status of the shear bolts, pos. 2. Damaged shear
bolts (size M5-5S-unstrengthed) must be replaced with new
bolts (original)!
Damaged or bent blades must be replaced, do not try to
repair them! Always use the original brand of blades!
Fig.22
Fig.23
Blades are placed facing each other at an angle of 90° and
turn in the opposite direction. During mounting it is
necessary to keep to the following mutual position.
Starting position
Measurement value