Legal requirements for oldschool mopeds?

[pingushred]

just got an old yamaha v50, 1974, i've got it going but need to know what it requires to be legal, help?

[scootnz]

http://www.scootersurvival.co.nz/the-rules.html
Moped requirements at the bottom of the page.

When you want to register it, get an "MR2B" form to fill out.