Mikuni TMR41 float height...

My '04 TE 450 is in bits (tidying it for the annual UK certificate of roadworthiness and sending the sussy away for revalving) and I can't find the proper float height setting anywhere - no mention in the factory manual, or anywhere on google-land (even though the TMR was used on plenty of Jap multis). It runs like a dream, but I'd like to know... so does anybody know what the proper float height is supposed to be?

Thanks.

Bingo! I just spoke to carb specialists Allens at http://www.allensperformance.co.uk/ to order some parts and they said it's 11mm.

I know this is an older thread, but where is the measurement taken from, the top of the bowl down or? I need help.

In the good old days, here's how we used to check the float level, use with caution, YMMV:
Hold the carb up in front of your face with a piece of fuel line connected and in your mouth.
Blow thru the fuel line as you bring a clear glass or plastic cup fulled 3/4 full with gasoline up around the float. Watch the float rise up as your breath starts getting squeezed off by the rising float needle. On stockers, the level would be just under the where the bowl gasket set up in the carb body, we would always set wayward levels to this.

The measurement is from the gasket face that mates with the float bowl to the uppermost part of the float:



(Different carb but exact same principle).

One thing to be aware of is that if the carb is held vertically, like this:



...the weight of the float may compress the spring-loaded pin in the float needle and give a falsely low measurement. So start by holding the carb horizontally with the float pivot at the top, like this:



...and rotate it until the float adjuster tang just pushes the float needle shut:



...then take your measurement. You don't need a vernier btw - a rule will be good enough as the tolerance for float height is usually plus or minus one millimeter.

Hope this helps.

Cool stuff guys. I remembered after my post how to do it. Old guys stuff setting in I guess. The pictures are worth their weight in gold.

Thanks again

Scott