Zundapp Z502 User manual

Replace Control Unit
Zündapp Green 7.7 / Z502 / Z503 / Z504 / Z802 / Z80S
These brief instructions should help you to replace the control unit on your bike. To
do this, please proceed as follows:
Turn off your system and remove the battery from the
battery holder.
Pull the protective cable sleeve down and unplug all
connectors.
Remove the two screws on the luggage rack mounting
struts.
Remove the two screws that attach the rack to the rear
dropouts and lift the entire rack off the bike.

Press the cable clamp to pull out the light cable. Make
a note of which color of the light cable goes in which
clamp.
Dismantle the two mounting braces.
Note which of the struts is mounted on the left and
right.
Remove the four screws with which the control unit is
mounted on the luggage rack.
Mount the new control unit, plug in the light cable and
mount the luggage rack.
Replace Control Unit
Zündapp Green 7.7 / Z502 / Z503 / Z504 / Z802 / Z80S

Plug all connectors together and slide the protective
cable sleeve upwards.
The upper end of the cable protection sleeve should
be fixed with a cable tie.
Replace Control Unit
Zündapp Green 7.7 / Z502 / Z503 / Z504 / Z802 / Z80S
Motor Cable Tree (8 pins)
Connector for bottom
bracket sensor (3 pins)
Motor Cable (9 pins)
Flat connector rear light
Pin assignment control unit
luggage rack assembly