Walbro WB3A pop off setting?

Kent Metcalf · Posted: Tue Oct 09, 2012 8:31 am Post subject: Walbro WB3A pop off setting?

don't know much about the carb but went a bought a rebuild kit to give it a go. What should the pop off be set to for a yamaha Jr. or Sr. carb. Going in to our last race of the season with our championship on the line I want everything to be right. Might not be the time for me to stepping into this but cash and time are not on my side right now. Anything else I need to know about this before I go and mess it all up? Thanks
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St. louis Mo.

Walt Gifford · Posted: Tue Oct 09, 2012 10:24 am Post subject:

Fulcrum arm .050" below the oem gasket and pop off at 10.5 psi.

Gif Cool

_________________
FAA certified jet engine and aircraft technician
Nicholson Speedway class champion 2001
Yamaha KT100 Service Center
40 years karting experience

Kent Metcalf · Posted: Tue Oct 09, 2012 7:32 pm Post subject:

Thanks Walt after thinking things over I decided not to take this time to learn about the carb at my boys expense. Going to send it out to Laukatis Racing and have them go thought it. I got all winter to learn on my own time not on my boys championship.
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St. louis Mo.

Walt Gifford · Posted: Tue Oct 09, 2012 10:01 pm Post subject:

You could just replace the gaskets and diaphragms without messing with the lever but, Kents a good old boy, he'll get'er done.

Gif Cool

_________________
FAA certified jet engine and aircraft technician
Nicholson Speedway class champion 2001
Yamaha KT100 Service Center
40 years karting experience