22 - FORM NO. 56043042 / Whirlamatic
™
2700 / BHS 7014
WHEEL DRIVE SYSTEM
FRONT
D
A
G
C
H
I
L
K
M
N
O
B
E
F
J
RED/GRN
BLK/YEL
VIO/BRN
POTENTIOMETER REMOVAL AND TESTING
WARNING!
Disconnect the machines battery pack connector before servicing.
FIGURE 7
FIGURE 8
1
See Figure 7. Observe the 3 wires connected to the drive pedal potentiometer
(pot) and disconnect. Note the proper wire colors and their terminal connections
for re-assembly.
2
See Figure 8. Remove the (4) (A) Screws and (B) Nuts securing the pedal mount
assembly to the chassis, and remove.
3
Remove the Link Rod (C) from the Pedal (D). Note: Be careful not to lose the
mounting hardware items (E-J).
4
Loosen the Nut (K) and Screw (L) at the Drive Pedal Throttle Lever (M) then pry
it from the end of the Potentiometer (N) shaft.
5
Remove the pot assembly from the Pedal Mount (O).
6
Test the Potentiometer (N)
using an ohm meter, the
specification is 5k Ohms.
Connect the meter leads
to each of the outside con-
nections on the potentiom-
eter, it should read approxi-
mately 5000 ohms. Next,
take one of the test leads
and connect to the middle
connection, then turn the
stem both directions, the
reading should be approxi-
mately 0-5000 ohms and
5000-0 ohms increasing
and decreasing through its
full range. If you do not get
these readings replace the
Potentiometer (N).
Potentiometer Installation and Adjustment:
The adjustment of the potentiometer is to set the drive pedal for a neutral drive motor operation. If the potentiometer is not adjusted
properly, the machine will creep in either FWD or REV.
7
Install the Potentiometer (N) with the small metal mounting tang inserted into the pedal mount slot, before tightening potentiometer
attachment nut.
8
Connect loosely both the Throttle Lever (M), Link Rod (C) to the Pedal (D) and Potentiometer (N) input shaft. Then just tighten the
Link Rod (C) pedal mounting hardware (E-J). Note: The foot Pedal (D) must move freely in FWD/REV.
9
See Figure 7. Attach test leads from a volt/ohm meter (set meter on 0x100 scale) to the RED/GRN and VIO/BRN wire connection
points on the potentiometer to check it’s total resistance (example: 4800 Ohms).
10
Next connect the ohm meter test leads to the BLK/YEL and VIO/BRN potentiometer connection points. Then, using a small
screwdriver, turn the shaft end of the pot to 1/2 the total resistance previously measured, (example: 4800 Ohms divided by 2 = 2400
Ohms). Then, without turning the shaft, tighten the Screw (L) and Nut (K) to secure the setting at the Drive Pedal Throttle Lever
(M).
11
Follow steps 1-2 in reverse order to finish the installation. Then test-drive the machine for proper speed and FWD/REV directional
control.
revised 2/02
