How to change Speed Sensor on BBS02/BBSHD Motor
Help Desk Support
To do this you will need the following:
4mm Allen Key
2.5mm Allen Key
Wire snips to cut zip ties
Small zip ties
Make sure your bike it turned off. Remove the battery and discharge excess electricity by powering on the display with the battery removed.
Remove these three bolts circled with a 2.5mm Allen Key
Snip any zip ties connecting the speed sensor to the lower chain stay.
Undo the bolt holding the speed sensor in with a 4mm Allen Key.
Trace the speed sensor wire into the area you opened up in Step 2 which will be referred to as the wiring cavity. Find the connector - you need to trace the wire to locate it. You will also need to pull out some other wires to access this - take care while doing this. Unscrew the right end of the connector in the image below then wiggle the connector to loosen and disconnect it.
Pull the old speed sensor wire out from the wiring cavity and fully remove the old speed sensor from the bike.
Insert the connector for the new speed sensor into the motor wiring cavity through the hole you pulled the old one out from. Plug the connector into the plug on the motor where you unplugged the old speed sensor from. Make sure the arrows and the plugs are aligned when plugging this in.
Screw the new speed sensor into the hole on the rear chain stay where the old speed sensor was attached. Ensure that you have correctly reinstalled any spacing bolts! Take care to not cross thread this bolt while screwing it in - you may need to start it by hand before using a tool to further tighten it. Make sure it is aligned and oriented correctly - see this image below for reference.
Zip tie the wire from the new speed sensor back onto the frame. Push the wires you pulled out back into the wiring cavity and screw the motor cover back on.
Check that your newly installed speed sensor is working correctly and your issue is resolved.
If you are still having trouble, please submit asupport ticketusing the same email you placed your order under. Please note in the ticket your Biktrix order number, the trouble you are experiencing and include photos of the issue.