How to adjust my derailleur
First let's take a look at the reasons why you might need to adjust your derailleur:
- There is a clicking noise from the hub area (photo) or
- The chain falls off the cogs without force
What you'll need to adjust your derailleur:
- A Phillip's head screw driver
- 5mm allen key (hex wrench)
How to adjust your derailleur:
1. The first thing you will need to check is the alignment of the derailleur itself. Position yourself directly behind the derailleur and look straight down the line of the ebike. If the derailleur is straight it will look like the example in the picture below. The derailleur should hang directly below the gear that is set on the shifter on the handlebars (gear 7 being the smallest cog to the furthest right). If the derailleur is not straight or is twisted in anyway, it will not feed the chain into the cogs correctly and will cause the chain to skip or not change gear correctly. If this is the case you should bring your ebike to a bike shop to have it professionally bent back.
2. In order to adjust the derailleur you'll need to be able to rotate the wheel. If you have a bike repair stand, you should use it. If not you can simply put the stand down and lean the ebike over to one side in order to lift the rear wheel off the ground. It can help to remove the battery before performing this adjustment so the bike doesn't topple over.
3. If your derailleur is not shifting gears correctly, then it is probably not aligned properly. The rule here is to twist the barrel adjuster (labelled in photo) in the direction that you want the gear to shift, if you want to shift to a smaller cog, twist the barrel adjuster clockwise and counter clockwise to shift to a larger cog. In order to get the most accurate result from your adjustment we suggest that you pedal the bike while you are doing it so as soon as the chain jumps from one cog to another, you can stop twisting the adjuster. This adjustment can be done without pedaling too, simply twist the barrel adjuster until the derailleur is directly underneath the gear you want.
4. To check that your adjustments are correct (it can make it easier if you have an additional set of hands to help you), pedal the bike and shift up and down through all of the gears. It can happen that the chain won't engage first gear even if you have twisted the barrel adjuster as far as it will go, which means that the tension on the cable needs to be increased.
5. In order to adjust the tension on the cable, shift your ebike to the smallest cog available (7 in this case) and twist the barrel adjuster clockwise until it can't twist any further.
6. Using the hex wrench and the photo below for guidance, you'll need to loosen the cable until there is some visible slack. Because the cable runs through the derailleur, it might move slightly from where you have just adjusted it to, but don't worry about that.
7. Take the cable in one hand and pull it away from its source in order to take any slack out of it. While there is tension on the cable, tighten the bolt to secure the tension on the cable.
8. Once again, shift up and down through all of the gears and see if the problem has been fixed. If the gears change without any issues then you're all set! If not, return to step 3 and try the next step.
9. You will only need to complete the following steps if the chain on your ebike falls off either the smallest or the largest cogs while pedaling. Shift to the gear where you are experiencing the issue and adjust the upper or lower limit screws (shown in picture below). If the chain falls off the largest cog then you will need to screw in the lower limit screw and the opposite for the smallest cog. While adjusting the screws you should be pedaling the wheel. Keep experimenting with how much you have to screw it in by pedaling the bike and seeing when it stops falling off.
10. Your derailleur should now be adjusted. If you continue to experience issues with this component please take it to a local bike shop to be examined and fixed or reach out to us.
eBike Parts & Accessories