Operator's Manual

13
1. Position the machine on a clean, level surface. Lower
the cutting units, stop the engine, engage the parking
brakes, move enable/disable switch to disable position,
and remove the key from the ignition switch.
2. Unlock and raise the seat to expose the controls.
3. Make the initial reel to bedknife adjustments
appropriate for backlapping on all cutting units. Start
the engine and set the engine at idle speed.
4. Set both reel speed controls to position 11. Select
either the front or rear on the backlap switch to
determine which units to backlap.
5. Move the enable/disable switch to the enable position.
Move the lower mow/raise lever forward to start the
backlapping operation on the designated reels.
6. For the cutting units being backlapped, move the reel
speed control to position 1.
7. Apply lapping compound with the long handled brush
supplied with machine.
Contact with the reel or other moving parts can
result in personal injury.
Stay away from the reel and other moving parts
while backlapping.
Caution
8. To make an adjustment to the cutting units while
backlapping, turn the reels Off by moving the lower
mow/raise lever rearward, move the enable/disable
switch to Disable, and turn the engine off. After
adjustments have been completed, repeat steps 3–7.
9. Repeat the procedure for the remaining cutting units.
10. When the backlap operation is completed, return the
backlap switch to Off, set the reel speed controls to the
desired mowing setting, and wash all lapping
compound off of the cutting units.
Note: Additional instructions and procedures on
backlapping are available in the Toro Sharpening Reel and
Rotary Mowers Manual, Form No. 80-300PT.
Note: For a better cutting edge, run a file across the front
face of the bedknife when the lapping operation is
completed. This will remove any burrs or rough edges that
may have built up on the cutting edge.
Servicing and Adjusting the
Reel Bearings
Important Before removing the cutting unit, remove
the reel motors to prevent damage to the hydraulic hoses.
Periodically check the drag on the reel bearings. Proper
adjustment of the reel bearings ensures that no end play of
the reel exists and there is minimum rolling torque of the
reel assembly. All measurements and adjustments of the
reel rolling torque must be done with a completely
assembled cutting unit. Check and adjust the reel bearings
in the following manner:
1. Adjust the bedknife so it is not in contact with the reel.
2. Measure the rolling torque with a torque wrench. The
measurement should be 5 to 7 in.-lbs. If it is not, or if
end play exists, adjust the reel bearing as follows:
A. Remove the mounting nuts from the
counterbalance end weight (Fig. 18).
1
Figure 18
1. Counterbalance end
weight