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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 the D
ISABLE
2.
Unlock and raise the seat to expose the backlap
levers
(Figure
95).
3.
Make initial reel-to-bedknife adjustments
appropriate for backlapping on all cutting units
that are to be backlapped; refer to the Operator's
Manual for the cutting units.
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
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 M
position, move the Enable/Disable switch to
the E
position. Move the Lower Mow/Lift
NABLE
control forward to start the backlapping operation
on the designated reels.
position.
(Figure
95).
OW
7.
Apply lapping compound with a long handle
brush.
Important:
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 adjust the cutting units while backlapping, turn
the reels off by moving the Lower Mow/Raise
lever rearward; the Enable/Disable switch to the
D
position, and stop the engine.
ISABLE
After completing adjustments, repeat steps
through 8.
1. Backlap levers
10.
Repeat the procedure for all cutting units you
want to backlap.
11.
When finished, return the backlap levers to the
M
position, lower the seat, and wash all
OW
lapping compound off the cutting units.
Note:
Adjust the 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 O
backlapping, the cutting units do 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.
61
Figure 95
position after
FF
4
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