XR650R float level check questions...

6 replies to this topic
  • mrtee

Posted September 24, 2007 - 04:43 AM


I'm trying to get my float height set correctly and I don't have a float level gauge, also in the pictures in the manual it is unclear to me where to measure to and from.

Is the spring compressed when you measure the height or do you need to compress it? Or leave it uncompressed?

Thanks in advance.

  • scalejockey

Posted September 24, 2007 - 05:00 AM


what is that picture of??

  • mrtee

Posted September 24, 2007 - 09:23 AM


No idea what the advert is for, does anyone have any suggestions for my problem? :thumbsup:

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  • porterdog

Posted September 24, 2007 - 10:05 AM


I assumed that the float height indicated was for a barely-shut valve.

What I do is take a clean piece of fuel hose and blow into the fuel inlet. Doing this you can tell *exactly* when the valve is closed. Measure your height there.

  • mrtee

Posted September 24, 2007 - 12:41 PM


thanks, can anyone else confirm this information? :thumbsup:

  • weskc35k

Posted September 24, 2007 - 11:47 PM


As a general rule the float should be parrallel to the carb base where the bowl fits to it when the fuel shuts off.
Or 18mm from the same point on an XR650r..

  • rdahl

Posted September 25, 2007 - 07:00 AM


the spring should not be compressed when you set float hieght....it should be set when the float touches the spring...which usually ends up being very close to parallel with the bowl mating surface.

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