HP Velotechnik trikes - Manual (Page 59)

Gear system and chain
55
Handling instructions
Caution! If this chain retention
hook is missing the chain may fall down.
When you start pedalling then the chain
roller, the seat or the frame may be dam-
aged through the chain. Please consult
your local specialist dealer in case this
hook is missing.
Dismounting and mounting of the chain roller
To dismount the chain roller, the chain tubes
need to be removed. See also hints on replac-
ing the chain tubes (page 53)
The chain roller is mounted with a special
high strength screw of the German strength
grade 12.9 and it may only be replaced by a
screw of the same type and strength.
The chain roller is not symmetrically shaped;
the recessed side of the chain roller has to
face to the frame, the flat (logo) side out-
wards.