Just bought a '71 Superbug with a 1600cc motor and it has been fitted with a Holley 2110 Carbie. It gives great power to the engine but is a pain to start on cold mornings.It does not appear to have any form of choke mechanism, does anyone have any information on these carbies or know where I can find some information online. It appears that there may be some parts missing.

IF that is a single centre mount carb without a choke and heat risers then there is know way known to man that that would give a smooth idle.
Hot or cold

Sorry - as for a diagram no, cant help.

If it is similar to a Weber progressive you could try
http://www.redlineweber.com 

I didn't know there was such thing as a cold morning on the sunshine coast!

Sorry I can't help you with your carb problem, I usually take them off and swap meet them, not my favorite carb

Thanks guys, might look at a manual choke or even another carb. Or just put up with it.

No, the Holley copy of the Weber 32/36DFEV is designated the 5200, can't say I know the 2110.