Grinding The Cutting Units; Storage - Toro 02700 Operator's Manual

Figure 38
1. Normal position of rotary
valve controls for forward
cutting-unit rotation
7. Operate the tractor PTO switch/lever to the O
position (Figure 38) and switch off the tractor engine
when the grinding action has stopped.
8. Thoroughly clean the blade edges and adjust the cutting
cylinders to the bottom blades.
9. Check that a thin piece of paper can be cut cleanly at
all points along the cutting edges while rotating the
cylinders by hand.
10. If further back lapping is necessary, repeat steps
through 9.
11. Thoroughly remove and wash off all traces of the
carborundum paste from the cylinders and the bottom
blades.
12. Move the control lever to the original position for
normal operation.
Note: The back-lap control lock should spring back,
locking the control lever in position.

Grinding the Cutting Units

Have your Toro Authorized Distributor carry out a grinding
operation to correct the cylinder spiral edges and/or
bottom-blade edges when they have become excessively
rounded or distorted. If the bottom blades are nearing the
end of their wear life, have them replaced. Have the new
blades ground on their holders prior to installing them. Grind
both the cylinders and the bottom blades at the same time.
The only exception to this rule is when a new cylinder is fitted,
in which case it is only necessary to grind the bottom blade.
All such grinding operations should be carried out by your
authorized dealer or distributor on a quality, well-maintained
cylinder / bottom-blade grinding machine.
2. To start the back-lapping
procedure, rotate the
lock lever clockwise to
position 1; rotate the rotary
valve counterclockwise to
position 2; release the lock
lever counterclockwise to
position 3.
FF
3

Storage

•
Park the mower on level ground.
•
Perform routine checks.
•
Release the mower brakes—operate the mower handbrake
downward to the lowest position to release the mower
brakes.
•
Adjust the cutting cylinders such that they are clear of the
bottom blades.
•
Prevent tire distortion—support the mower chassis on
blocks such that the tires are clear of the ground to
prevent tire distortion.
•
Prevent corrosion—treat bare metal surfaces including
the cutting edges of the cutting cylinders, bottom blades,
and exposed hydraulic-cylinder rods with grease, oil, or a
proprietary corrosion inhibitor.
32