Poor chain retention or shifting on bumps
Inspect alignment of derailleur. Confirm all bolts tight. Monitor chain length and lubricate for smoother shifts.
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Hanger bent from shipping/impact, causes poor shifting or chain drop
Inspect visually; gently bend back using derailleur alignment tool if slight; severe bends require replacing hanger (contact ENVO for part).Cable not installed cleanly causing friction, poor shifting
Inspect cable path and ensure smooth bends, not kinked or pinched. Reroute as necessary per manual; secure with guides.Chain comes off, misalignment
Set derailleur limits, check tension, verify chain-line as per manual. Escalate if unresolved. Use this tutorial to seat derailleur limits. https://www.youtube.com/watch?v=GWRdLIg79MoRough use accelerates chain wear
Clean/lubricate chain more frequently. Inspect for stretching or link damage. Replace if excessive wear is detected.ENVO D50/ST50 Gear not shifting properly.
If you notice the gear are not shifting properly between 1-9 or 9-1. Follow the following procedure: