Can anyone give me some tips on adjusting the float height on my NC30,and tell me how critical it is to get the height spot on,also what would be the effect if height was to high or to low?

Grab the manual from our Document Library. http://www.400greybike.com/docs.htm

Also check out the NC30 carb jetting thread that is stickied to the top of this section...
viewtopic.php?f=24&t=14524

Thanks for that vfrman,invaluable!

as above, all information is readily available.

it is important, the bike will run too rich or lean otherwise and pickup from idle will be less than ideal down to the bike unrideable / unstartable.

you can make a float height measuring tool from an old credit card if you can measure and cut accurately. this has all been posted too so if its not in any of the links just search the forums for float height tool and you will find it.

Thanks for that Neosophist,point taken!