Potentiometer Adjustment - Nilfisk-Advance BA 500 Service Manual

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POTENTIOMETER ADJUSTMENT

Adjust the potentiometer if the machine has no drive, or if it moves with the twist grips in neutral. To adjust the
potentiometer...
1 Remove the back panel from the control handle.
2 See Figure 3. Loosen the (2) set screws in pulley "B".
3 Remove the plastic cover from the speed control.
4 Carefully pull connector "A" off the speed control (pull toward back of machine).
5 Connect an ohmmeter (on 0 x 100 scale) to the green and yellow wires at the connector.
6 Turn the potentiometer shaft until the meter reads between 2400 and 2600 ohms.
7 Without turning the potentiometer shaft, tighten the set screws in pulley "B".
8 Test the drive system for proper operation before installing speed control cover and handle cover.
WHEEL DRIVE SYSTEM
BA 500 Service Manual 20