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4.9
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- CHECKING BLADES ALIGNMENT
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WORKSHOP MANUAL
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4.9 CHECKING BLADES ALIGNMENT
Excessive vibration when cutting and an uneven cut
can be due to misalignment of the blades owing to
deformation of the flanges or the shafts as a result
of accidental knocks.
Put the machine into a vertical position [see 2.6].
Always wear strong gloves when handling the
blades.
To check the alignment of the blades, one of them
must first be removed and refitted after having
removed the shaft key
(2)
, to permit independent
blade rotation.
NOTE
Take note of the unscrewing and screwing direction of
the central screw of each blade
(1)
With the blades disengaged, firmly hold each blade
and bring the cutting edges together in the various
positions possible (A-B; A-B1; A1-B1; A1-B). At each
position they should be aligned to within 2 mm.
If higher amounts are found, check that the blades are
not distorted. If this is not the case, check the sup-
ports or the shafts for the blades [see 6.9], replacing if
necessary, and check the condition of the point where
the flanges rest on the cutting deck.
IMPORTANT!
Always replace damaged blades and do not
attempt to repair or straighten them. Always use
manufacturer’s genuine spare parts!
Having made the check, remember to refit the shaft
key
(2)
and check that the rotating blades do not
interfere with each other during a whole revolution.
A
A1
B
B1
3/2002
< 2 mm
2
1
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