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1.69
MAINTENANCE
1.69
Cutterhead Cylinder to Bottom Blade
Adjustment continued
Do not be tempted to over adjust, thus causing
heavy contact between the cylinder and bottom
blade, as this will cause very rapid uneven wear
to take place leading to tram lining and waviness
of the cutting edges. The frictional losses will be
high and a significant amount of power will be
absorbed, thus reducing the power available for
cutting. The heating effect due to friction will
cause excessive expansion to take place which will
further aggravate the situation by increasing the
contact pressure.
If the cutterheads are allowed to operate for more
than a few hours without adjustment the running
wear will eventually cause the cylinder to run out
of contact with the bottom blade. At this stage very
rapid rounding of the cutting edges will occur as
grass and abrasive particles pass through the clear-
ance between the blades.
Lack of attention to adjustment can therefore be
foolhardy as maintenance costs will escalate. The
quality of cut will also be seriously affected as will
the health and growth of the grass.
An experienced operator will notice when a cutter-
head starts to go out of adjustment; when the grass
ceases to be cut cleanly and the cut ends become
ragged.
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