Backlapping The Cutting Unit - Toro 04651 Operator's Manual

Checking the Top Grind Angle
The angle that you use to grind your bedknives is
very important.
Use the angle indicator (Toro Part No. 131-6828) and
the angle-indicator mount (Toro Part No. 131-6829) to
check the angle that your grinder produces and then
correct for any grinder inaccuracy.
1. Place the angle indicator on the bottom side of
the bedknife as shown in
Figure 21
1. Bedknife (vertical)
2. Press the Alt Zero button on the angle indicator.
3. Place the angle-indicator mount on the edge
of the bedknife so that the edge of the magnet
mates with the edge of the bedknife
Note:
The digital display should be visible from
the same side during this step as it was in step 1.
Figure 22
1. Angle-indicator mount
2. Edge of the magnet mated
with the edge of the
bedknife
4. Place the angle indicator on the mount as shown
in Figure 22.
Note:
This is the angle that your grinder
produces, and should be within 2 degrees of the
recommended top grind angle.
Figure 21.
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2. Angle indicator
(Figure 22).
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3. Bedknife
4. Angle indicator
Backlapping the Cutting
Unit
DANGER
Contact with the reel or other moving parts
can result in personal injury.
Keep fingers, hands, and clothing away from
the reels or other moving parts.
• Stay away from the reel while backlapping.
• Never use a short-handled paint brush for
backlapping. Long-handled brushes are
available from your local authorized Toro
distributor.
1. Position the machine on a clean, level surface,
lower the cutting units, stop the engine, engage
the parking brake, and remove the ignition key.
2. Remove the reel motors from the cutting units
and disconnect and remove the cutting units
from the lift arms.
3. Connect the backlapping machine to the cutting
unit by inserting a piece of 3/8 inch square stock
into the splined coupling in the end of the cutting
unit.
Note:
Additional instructions and procedures
on Backlapping are available in your traction
unit Operator's Manual and the Toro Sharpening
Reel and Rotary Mowers Manual, Form Number
80-300PT.
Note:
For a better cutting edge, run a file
across the front face of the bedknife and reel
when the lapping operation is completed. This
will remove any burrs or rough edges that may
have built up on the cutting edge.
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