Cutting Unit System
Maintenance
Backlapping the Cutting Units
WARNING
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 backlap levers
(Figure 69).
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.
DANGER
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.
Select either front, rear, or both backlap levers to
determine which units to backlap (Figure 69).
DANGER
To avoid personal injury, be certain that
you are clear of the cutting units before
proceeding.
6.
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.
7.
Apply lapping compound with a long handle brush.
Never use a short handled brush.
8.
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 your desired
speed.
9.
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 4 through 8.
1
g021209
Figure 69
1.
Backlap levers
10.
Repeat the procedure for all cutting units you want to
backlap.
11.
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. Adjust the cutting unit reel
speed to the desired mowing setting.
Important:
If the backlap switch is not returned
to the Off position after backlapping, the cutting
units will not raise or function properly.
Note:
For a better cutting edge, run a file across
the front face of the bedknife after lapping. This will
remove any burrs or rough edges that may have built
up on the cutting edge.
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