620 dual carb. problem

Ogopogo

New User

I've installed a carb kit into my 620 dual schebler carb and cannot get it to fire on the left cylinder. I'm sure I've cleaned out all the channels but still no success. I substituted a carb off a 60 I've got and the 620 runs quite normal with it.
Any and all suggestions would be very welcome.
 
Sounds like a passage way is still plugged up. The casting plugs on the side of the carb need to be removed & put the carb in some carb cleaner. Check with brake cleaner with a few short blasts to determine if the passages are open. Install new casting plugs. My experience has been that without removing the plugs the passage ways are difficult to clean.
 
Buy the DVD "How to rebuild duplex carburetors" from Robert's Carb repair in Spencer Ia.
www.robertscarbrepair.com
 
(quoted from post at 18:46:00 11/19/14) how do we contact Poppin John?

Can you provide a phone or email?

googled "poppin john carburetor" first result yielded:

https://popinjohn.3dcartstores.com/crm.asp?action=contactus

PopinJohn Co., LLC
11 Upper Cherrytown, Kerhonkson, NY. 12446
Phone: 845-626-5870
 

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