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walbro wy carb

smenguy's Avatar

Join Date: Jun 2006
Posts: 101

08-03-09, 06:53 PM   #1  
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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Tolyn Ironhand's Avatar
Group Moderator

Join Date: Nov 2007
Posts: 11,824

08-03-09, 07:58 PM   #2  
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.

hopkinsr2's Avatar

Join Date: Feb 2005
Posts: 1,561

08-03-09, 08:02 PM   #3  
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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