Chain keeps falling off

[dgoldsmithvt]

Our Rad Mission is about 6 months old and has recently been having the chain come off the tensioner cogs and the rear sprocket.  Happens almost every time we ride it, often when we go over a bump.  Is there a way to adjust the tensioner so it gives more tension to the chain?  Thanks!

[Brandon]

https://radpowerbikes.zendesk.com/hc/en-us/articles/1260800194270-RadMission-Chain-Tensioner-Replacement-Guide

This shows the removal and replacement, but it's fundamentally similar. You want to unbolt the tensioner from the frame. Then if you see step #2 under "Install" that there is an indexing pin on the tensioner that fits into one of 5 holes in the frame. This is how you adjust the tension, by selecting the next hole that tightens up the chain.