How-To: Adjust FLOAT Height & Clear Tube Method

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[anthonyfriedrichs]

G'day Matt, after struggling for about 3 months trying to set the float level on my 1992 Suzuki GN250 I used your clear tube method and my bike is running great. This was after installing a new carb kit . Thanks a ton for the excellent explanation. Ant.

[joshduff]

Thank you! The clear tube method is the way to go. This helped me confirm a too-high fuel level and fix a rich running condition in the low range. 👍👍

[domarabadal]

Thank you, excellent explanation and great work. Keep it up my friend.
From Toronto, Canada

[choppergirl]

I put a brand new plastic non-adjustable float in my Honda Rebel.
It idles fine with choke all the way on, but as soon as I twist the throttle it stumbles, and my float bowl is leaking. If I get well past the stumbling, it will run just fine. I'm guessing my fuel bowl height is wrong, but I have no idea what to do at this point. I rebuilt the whole thing with a new kit and cleaned it and everything and made sure it was all put together properly according to videos. And now I find out about.. THIS. I didn't even know it was a think, I thought the float bowl operation was an ldl0t proof system. Just a float on a hinge with a needle.

Brilliant, I'm going to try this.

[stevenrandall]

Thanks for the great instructional video! Very helpful. I found out my floats needed a twist to be balanced.

[donovanlucibello]

My kids and I have been following you for years, Matt.

(Another) solid video!

[battler]

Great video, just to add to your advise, the T pieces on the carburettor fuel rail should be carefully inspected for leaks prior to installation.

[edwarddorado]

First of all most excelent instructor i looked at a lot of vedioes (sorry bout spelling fat fingers) got a guick guestion i got a go kart with a predetor motor i put a munki carb it acts like its runs out of gas but it dont every carb i put on same thing what can i adjust to fix i flushed tank cleaned every thing 2 or 3 times but im missing some thing im about to try the float thanks keep up the good work

[stevechristiansen]

Thanks for the video this will save me some time

[willcountypowersports]

Great video I also got a good laugh out of this one
I hate when things go wrong when you’re filming

[hrenken]

Thanks Mathew!
Just the information I needed.

[sthildas]

Thanks Matthew very simple plus informative. 🇬🇧🏍️

[bc-mrsi]

great video. my carb has a bowl drain outlet.fuel flows out when drain screw is slackened. can i connect a clear peace of tube to it 🤔

[MrJoller]

thanks for very good showing how to make adjustment for the float :)

[bradrussell]

Hahaha...that was the funniest float level adjustment ever...LOL, thanks for sharing, freakin needed a good laugh

[daveco]

Thanks for the video. I've been struggling a little with my CB750 float height measuring but I think I finally got it right. I'm a perfectionist and want it be exact using my digital caliper. Most of the floats weren't even, one side would measure perfectly and the other side would be off by a millimeter or 2. I was able to bend them a bit to get them even.  

I can't get my clear tube to stick in the bowl drain hole like you did. It kept leaking. I ended up taking an old float bowl drain screw, drilling a hole in it and sticking a small piece of brass tube in the hole....then I glued the rubber tube to that....so it's basically a float bowl drain screw with a hole in it and a tube glued to the screw end. I'm going to measure gas level on my bench which is inside the house. Do I have to use gas or can I use water (or even alcohol) in the bowl for measuring purposes? I'm a little worried about my basement smelling like gas for the next year.

[lexbrusb.]

INCORRECT!!! you have to measure the float height while holding the carb at a certain angle where the the plunger is barely touching (resting on) the tang on the float.

[thomasss]

Hi. The non-adjustable plastic floats can be adjusted a bit by shimming the float valve seat.

[RicardoTeixeiraCarromeu]

Good day Matthew for the pwk 24mm what is the correct float settings when I remove the bottom cover the float goes to way down that the valve even come out from the orifice.
Thank you

[nokia]

thanks for the tip. my carb pukes gas when i twist the throttle a lil bit fast. now its fixed! i found out that i have gas up to the brim of the float bowl