Cutting Unit System Maintenance; Backlapping The Cutting Units - Toro 03660 Operator's Manual

Cutting Unit System
Maintenance

Backlapping the Cutting Units

Contact with the reels or other moving parts
can result in personal injury.
• Keep fingers, hands, and clothing away from
the reels or other moving parts.
• Never attempt to turn the reels by hand or
foot while the engine is running.
Note: When backlapping, the front units all operate
together, and the rear units operate together.
1. Position the machine on a level surface, lower the
cutting units, stop the engine, engage the parking
brake, and move the Enable/Disable switch to
disable position.
2. Unlock and raise the seat to expose the controls.
3. Make initial reel to bedknife adjustments appropriate
for backlapping on all cutting units which are to
be backlapped; refer to the cutting unit Operator's
Manual.
4. Start the engine and run at low idle speed.
Changing the engine speed while backlapping
may cause the reels to stall.
• Never change the engine speed while
backlapping.
• Only backlap at idle engine speed.
5. Set both reel speed controls to position 1 (Figure 84).
1. Backlap levers
6. Select either front, rear or both backlap levers to
determine which units to backlap (Figure 84).
To avoid personal injury, be certain that you are
clear of the cutting units before proceeding.
7. With the Mow/Transport lever in the mow position,
move the Enable/Disable switch to the Enable
position. Move the Lower Mow/Lift control forward
to start the backlapping operation on the designated
reels.
8. Apply lapping compound with a long handle brush.
Never use a short handled brush.
9. If the reels stall or become erratic while backlapping,
select a higher reel speed setting until the speed
stabilizes, then return the reel speed to setting 1 or
to your desired speed.
10. To make an adjustment to the cutting units while
backlapping, turn the reels off by moving the Lower
Mow/Raise lever rearward; the Enable/Disable
switch to the Disable position, and stop the engine.
After completing adjustments, repeat steps 5 through
9.
11. Repeat the procedure for all cutting units you want
to backlap.
12. When finished, return the backlap levers to the
Mow position, lower the seat, and wash all lapping
compound off of the cutting units. Adjust cutting
unit reel to bedknife as needed. Move the cutting unit
reel speed controls to the desired mowing position.
Important: If the backlap switch is not returned
to the Off position after backlapping, the cutting
units will not raise or function properly.
54
Figure 84
2. Reel speed control knobs