Cutterheads Back Lapping - Toro CT2120 30655 Operator's Manual

necessary to carry out the back lapping procedure to
reprocess the cutting edges. In severe cases it will be
necessary to regrind the cutting cylinder and the bottom
blade, refer to Cutterheads Back Lapping (page 48) /
Cutterheads Grinding (page 49).
1
2
Figure 68

Cutterheads Back Lapping

WARNING
Contact with the cutterheads or other moving parts
can result in personal injury.
• Keep fingers, hands, and clothing away from the
cutterheads or other moving parts.
• Never attempt to turn the cutterheads by hand
or foot while the engine is running.
This process is recommended for restoring the sharp
cutting edges to cylinders and bottom blades which are
essential for good quality grass cutting.
This process can only deal with a small amount of metal
removal to restore the cutting edges. If the blade edges
are seriously worn or damaged it will be necessary to
remove the component parts and have them reground.
1. Check that the mower engine is switched off and the
parking brake applied.
2. Adjust the cutting cylinders to the bottom blades to
obtain fleeting contact.
3. Apply a medium grade detergent based carborundum
paste to the cutting edges of the cylinders with a
long handled brush.
80 Grade Carborundum paste
G014444
Part No.
1 lb (0.45 kg)
25 lb (11.25 kg)
4. Ensure that the area surrounding the cutterhead
heads is clear of people. Keep hands and feet clear
of the cutting cylinders during the period when the
mower engine is running.
5. Sit on the operator seat, start the mower engine and
set the engine speed at idle.
6. Operate the cutterheads drive switch to the
reverse/back lap position for a period of time and
listen to the grinding action .
0
90
7. Operate the cutterheads drive switch to the off
position and switch off the mower engine when the
grinding action has stopped.
48
63-07-088
63-07-086
G014445
Figure 69
Figure 70
G014443