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10
Prowler
™
720 and 730 Installation and User’s Guide
Changing the Drive Belts
Depending on usage, the drive belts, (located behind
the side plate), will stretch. When this happens, in order
to maintain the optimum performance of the unit, these
drive belts have to be changed.
1. Turn the robot upside down and remove the bottom lid
assembly as shown on page 9, Figure 14, Steps 1-4.
2. Inside, locate four screws on drive motor side which
hold the side plate in place, see Figure 15.
3. Take out these four screws and remove the side
plate, see Figure 16.
4. Remove the drive track. Before removing the drive
track, notice how the drive belts are positioned for
re-assembly, see Figure 17.
5. Take out the old drive belts and replace them
with new ones (P/N P12111). To re-assemble,
reverse Steps 4 to 1 above.
Changing Brushes
It is necessary to replace the brushes when they are
worn out, (when the brushes reach the plastic of the
wheel). Worn out brushes will impede the cleaner’s
scrubbing, climbing the walls and/or general
performance.
1. Detach one of the side plates by unscrewing the four screws, see Figure 15.
2. With side plate detached, take out the wheel tube from the machine.
3. Remove the end hub and pull out the worn PVA brush, see Figure18.
4. Place the new PVA brush onto the hexagonal tube and replace the end hub.
5. Re-install the wheel tube in place and reattach the side plate by screwing
back- in the four screws.
7
7
b
S
ide Plate
Drive Track
Driv
e
B
e
l
Figure 15.
Figure 16.
Figure 17.
Wheel Tube
End Hub
PVA
Brush
Figure 18.