8999153EN: v1.0 18/12/2020
41
Original instructions (ENGLISH)
Website: www.spearheadmachinery.com
WARNING!
Ensure that the blade carriers and blades are at 90° to each other after removing or
replacing drive couplings.
6.9
Blade Carrier
Figure 6.10
ITEM NO.
DESCRIPTION.
1
Blade carrier mounting bolts
and nuts
2
Rotor hub castle nut
Check the rotor hub for slack. Some settlement may occur after the first hours of working. Re-tighten
the castle nut (2) one quarter of a turn at a time, and back off until the split pin can be fitted. Repeat
until the slackness is removed.
Check the blade carrier mounting bolts for tightness. Refer to ‘Specific Torque Settings’; Section 6.14.
NOTE: Figure 6.10 shows a LH blade carrier. For Agricut 270 machines which feature RH blade carriers, the
same principle can be applied.
6.10 Blades
The blades must be inspected visually for wear each time before starting work. Replace blades when you notice
an increase in power demand or see that material is not being cut perfectly. Using the machine with blades that
are not sharp will have a negative effect on the quality of the work.
6.10.1 Replacing The Blades
When the blades wear at a different rate or some are broken, they must be replaced immediately. The new
blades should be mounted in the identical position of the one to be replaced and should be of equal weight and
length in order not to jeopardise the balance of the whole machine.
WARNING!
When a blade needs replacing, it is best to replace the whole series. Failure to fit original
tools may cause the machine to vibrate abnormally.
WARNING!
When replacing blades with the machine lifted off the ground, do not rely on the tractor’s
hydraulic lift to hold it up: wedge mechanical props or supporting trestles between the machine and the
ground to stop the machine dropping accidentally and posing a serious hazard.
WARNING!
Whatever the case, the cutting edge of the blade should face in the direction the rotor
rotates.
The tractor should be switched off and the handbrake applied during blade replacement and the ignition
key should be with the operator. Blades must be removed and fitted, as illustrated in the figures below,
