floater adjustment kz305csr

Hello KZriders,

I have to adjust the floaters in the carburators of my kz305csr. But my problem is that i dont know the right mm's to put them to. Does anyone of you know the right distance? It would help me a lot i have got an owners manual, but not the service manual..

Thanks and greetz!

PS: For other 305csr riders: if you want a digital copy of the owners manual please sent me a mail, the file was to big to upload to this site. My email is henknagel@gmail.com

HenkN wrote: Hello KZriders,

I have to adjust the floaters in the carburators of my kz305csr. But my problem is that i dont know the right mm's to put them to. Does anyone of you know the right distance? It would help me a lot i have got an owners manual, but not the service manual..

Thanks and greetz!

PS: For other 305csr riders: if you want a digital copy of the owners manual please sent me a mail, the file was to big to upload to this site. My email is henknagel@gmail.com

Hello, HenkN, and WELCOME to KZr!

The correct float height is whatever results in the correct fuel level inside the float bowls as determined by the clear tube test.

It may be that none of the float heights exactly match one another, but that's okay so long as the fuel levels are correct in all the carbs.

Good Fortune!

Thank you very much Patton for your answer! But.. i am not a really experienced mechanic.. and because i am from Holland my English isnt good enough to understand.. I tried google translate but that didnt work out enough

I understand the most of what you're saying, but not everything. What do you mean with 'the clear tube test'? How can i do that kind of test?

Maybe its a stupid question with an obvious answer.. but i have to ask it to get along, sorry

gstwin.com/float_height_check.htm
roadstarclinic.com/content/view/59/96/
You are basically creating a simple manometer to see the fuel level in the bowl without disassembling it.
If you need to adjust the the float level, see the manual.
Best of luck..
Oh, looks like the Mikuni manual did not upload because it's a pdf file.
Here's a link:
www.mikuni.com/pdf/vmmanual.pdf

here's an archived thread that talks about this and many other things concerning the little 305 cruiser...
kzrider.com/archive/viewthread.php?tid=14748

Should distinguish between float height and fuel level.

Float height is some specified measured distance between certain parts, with the carb dry and partially disassembled upside down on the workbench.

Fuel level is the surface of the gasoline inside the float bowl on a fully assembled carb.

The main objective is to achieve the correct fuel level inside the carb's float bowl by adjusting the float height as necessary.

Adjusting the float height is done by bending the tab or "tang" that presses against the blunt end of the float needle (which pushes the other pointed end of the float needle into the hole in the seat).
Fuel flow through the hole in the seat is stopped when the pointed needle presses into the hole.

Shop manuals often provide a certain distance measurement for the float height (usually dealing with a dry carb upside down on the workbench) which is theoretically supposed to later result in the correct fuel level inside the float bowl. But setting the float height to this precise measurement frequently fails to actually produce the desired fuel level inside the carb float bowl after the carb is reassembled and supplied with gasoline.

Keep on bending the float tang whichever way is necessary to result in the correct fuel level inside the float bowl. And don't fret over the dry float height measurement just because it's different from the theoretically correct measurement.



Here's the clear tube test:




Good Fortune!

Thanks guys for your extended reply's with the info!

The following week iam gonna try to do what you've explained

It may require several attempts to get the float tang bent into the necessary position whereby the correct fuel level is achieved.

Each successive effort entails draining and removing the bowl, re-bending the tang, re-attaching the bowl, and repeating the clear tube test.

All of this may be accomplished with the carbs on the work bench, and held upright, "level" and steady during the clear tube test.

To save some time and effort during the adjustment-testing process, it's okay to use only one screw to attach the bowl. And any slight leakage past the gasket won't invalidate the test.

When the correct fuel level is achieved, then of course add the remaining screws before installing the carbs.

When installing the carbs, it sometimes helps to get the throttle cables into their fittings before the carbs are pushed fully into position behind the engine. On the large Kaw fours (and perhaps other models), this would be with the carbs still protruding out the right hand (foot brake) side of the bike.

After the carbs are installed, adjust the throttle cables.

Good Fortune!