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Greensmaster 3320/3420
DPA Cutting Units
Page 8 -- 12
Service and Repairs
Backlapping
DANGER
TO AVOID PERSONAL INJURY OR DEATH:
D Never place hands or feet in the reel area
while the engine is running.
D When backlapping, run engine at idle speed
only.
D While backlapping, the reels may stall and
then restart.
D Do not attempt to restart reels by hand or
foot.
D Do not adjust reels while the engine is
running.
D If a reel stalls, stop engine before
attempting to clear the reel.
D Reelmotorsareconnected inseries:rotating
one moto r causes rotation in other motors.
NOTE: Additional instructions and procedures on
backlapping are available in the Toro General Service
Training Book, Reel Mower Basics (part no.
09168SL).
1. Position the machine on a level surface, lower the
cutting units, stop the engine and engage the p arking
brake. Place functional control lever in the neutral posi-
tion.
2. Raise and support operator seat. Locate the reel
speed control and backlap switch under the seat (Fig.
12). Rotate the reel speed control to position “1” and
place the backlap switch in the backlap position.
3. Make initial reel to bedknife adjustments appropriate
for backlapping on all cutting units which are to be back-
lapped.
4. Start engine and run at idle speed. Check that light
on backlap switch is illuminated identifying that cutting
reels are in the backlap mode.
5. Use joystick on the control console to engage the
cutting units.
IMPORTANT: To prevent damage to the reel, do not
rotate the backlap leverfrom the backlap position to
the mow position while the engine is running.
6. Apply lapping compound with a long handle brush
(see Special Tools in this chapter) (Fig. 13). Never use
a short handle brush to apply lapping compound.
1. Reel speed control 2. Backlap switch
Figure 12
1
2
Figure 13
1. Long Handle Brush
1
Reels may stall while backlapping. Do not
attempt to restart reels by hand or touch reels
while backlapping. Stop engine and turn reel
speed control knob one position toward ”9.”
DANGER
7. If reels stall or become erratic while backlapping,
stop backlapping by disengaging the PTO with the joys-
tick. Once the reels have stopped, move the reel speed
control knob one position closer to “9.” Resume back-
lapping by engaging the PTO with the joystick.