MAINTENANCE 9
en-71
9.4 BACKLAPPING AND GRINDING______________________________________________
To backlap:
1. Park the mower on a flat and level surface.
2. Enter Maintenance Mode. [See Section 4.7].
3. Press either of the orange buttons (AM or AN) on
the LDU until the BACKLAP ENABLE? screen is
on the LCD display. Press the black button (AL) to
enter backlap mode.
4. If reels are not lowered, the LOWER ALL
ACTUATORS will display on the LDU. Lower reels
to the ground. Pressing any of the three buttons
(AL, AM, or AN) with LOWER ALL ACTUATORS
on the display will cancel backlap mode.
5. Use orange buttons (AM and AN) to adjust timer.
Press black button (AL) to start backlapping.
Selected motors will start rotating and horn will
periodically chirp.
6. Turn mow switch (E) and desired reel switches (F,
G, and H) to ON position.
7. Adjust reel speed between 150 and 400 rpm using
the orange buttons (AM or AN).
8. Apply lapping compound with a long handle brush
along the entire length of the reel.
9. Continue lapping and at the same time make a fine
adjustment on the reel and bedknife until there is a
uniform clearance along the full length of the cutting
edges.
10. Exit backlap mode by allowing the timer to end, or
pressing the black button (AL) to select QUIT.
11. Turn key switch (J) to off position.
12. Carefully and thoroughly remove all lapping
compound from reel and bedknife before running
the reel in forward direction.
Figure 9E
Figure 9F
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