walbro wy carb


Old 08-03-09, 06:53 PM
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Join Date: Jun 2006
Location: alabama
Posts: 101
walbro wy carb

I have a green machine trimmer with a walbro wy50 carb and put new gaskets and cleaned carb. the engine will run if i put a little gas in the carb but will not start from pumping the primer. I took the carb back apart and can sqirt gas both ways through the little check valve under the metering lever. I think it is messed up. I thought it was only supposed to flow out to the nozzle. Is there any where to buy just the check valve for this? Thanks for your help.
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Old 08-03-09, 07:58 PM
Tolyn Ironhand's Avatar
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Join Date: Nov 2007
Location: Twin Cities, MN
Posts: 12,185
Did you replace the diaphragm? most times I have fuel issues replacing that does the trick. Otherwise you may have to remove the needles and clean them out.
Old 08-03-09, 08:02 PM
hopkinsr2's Avatar
Join Date: Feb 2005
Location: canada
Posts: 1,561
The warlbro website has an excellent troubble shooting, repair manual on line... I use it a lot check it out & it'll answer all you're questions.... Roger

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