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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 D
position.
2. To activate the backlap function on the InfoCenter
service menu, proceed as follows:
A. With the engine off, but the key in the run
position, access the Main Menu of the InfoCenter.
B. From the Main Menu, scroll down to Service
Menu using the center button and select it using
the right button.
C. In the Service Menu, scroll down to Front
Backlap, Rear Backlap, and activate front, rear or
both by using the right button to turn the desired
set of cutting units from O
D. Press the left button to save the settings and exit
the Settings menu.
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. With the Mow/Transport lever in the M
move the Enable/Disable switch to the E
position. Move the Lower Mow/Lift control forward
to start the backlapping operation on the designated
reels.
ISABLE
to O
.
FF
N
position,
OW
NABLE
53
6. Apply lapping compound with a long-handled brush.
Important: Never use a short-handled brush.
7. 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. This can be done using the buttons on the
InfoCenter.
8. 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 D
position, and stop the engine. After
ISABLE
completing adjustments, repeat steps through .
9. Repeat the procedure for all cutting units you want to
backlap.
10. When finished, turn off the backlap functions, using
the buttons in the InfoCenter, and wash all lapping
compound off the cutting units. Adjust cutting unit
reel to bedknife as needed. Adjust the cutting unit reel
speed to the desired mowing setting.
Important: If you do not return the backlap
function to the O
FF
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 removes
any burrs or rough edges that may have built up on
the cutting edge.
setting after backlapping, the
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