Vanraam Twinny User Manual page 27

Chain Twinny (Plus) and Kivo (tricycle):
To keep the chains on the front of the bicycle
tight, secure two chain tension wheels on the
bike. Follow the instructions below to adjust
the chains to the correct tension so the chain
tension wheels do not become loose:
1. Loosen the cap nut a few turns.
2. Move the chain tension wheel, so that
the chain is under light tension, as
described above.
3. Tighten the cap nut again.
User manual
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