Zirri short 4th

Schaltroller / Classic Motoscooters Vespa Largeframe
1

how do you install a zirri short 4th in a smallframe?
it didnt come with instructions…

Cheers,
Jonathan, in New Zealand.

2

Bring it round to my house and i’ll fit it for you f.o.c.
:shoot1:[:dance3:]