Mikuni Carburetors - Setting Float Level

[Diablo007]

While trying to find information regarding setting the float level in the Mikuni's being rebuilt for the RD on the bench I ran across this website.  Pretty informative:

http://www.vintagebikebuilder.com/setting-mikuni-float-levels.html

There seems to be other good information on the site.

BTW; pretty sure I found a typo in the factory Yamaha manual for the early RD's while trying to find information on the float level.  Page 49; Section 3-18; first paragraph: "The YAMAHA R5C, RD250 and RD350 employ two ANAL type VM28SC carburetors..."

If I'm correct that should be 'AMAL', correct?

[Czakky]

I hope so otherwise I've been going about this totally wrong.

[dgorms]

Sometimes my carbs are "Anal".........................................D

[quocle603]

This is a great site and thread to pin for those who don't know how to do this task.

[teazer]

Nice site but yet again they talk about float levels and that is a poor substitute on a stock bike for setting FUEL levels.

Too often we set float levels with dented or repaired floats and the actual fuel levels are not close to where they should be. Add to that sticky or weeping float valves and all that work is for naught.

Contact Evans Ward and see if he will sell you a fuel level gauge (it's a replacement bottom nut to allow the user to see and measure the fuel level.

[Evans Ward]

teaser is always right on the money! If you want to just set your float level, then go at it- live and learn! 

Setting fuel height is much more accurate. I have the tester line tool offered for sale here on this site for VM Mikuni carbs. I also have only one left of the R5/ RD350 tester left and may not offer more. Contact me if interested.

[Diablo007]

The tool is exactly what prompted the search.  Where is the tool listed on the site?  I searched here for info also.

[Evans Ward]

The tool is exactly what prompted the search.  Where is the tool listed on the site?  I searched here for info also.

My fuel height tester line is in the for sale section here under my name. I just sold the last R5/ RD350 one but have stock on hand for the VM style.

[quocle603]

I usually take my caliper, measured out the desired length on cardboard or something sturdy. Cut it out and to set my float height to it.