Like the others said, the carb is leaking gas through the float, and either needs cleaning or adjustment.
In your earlier post, you were looking for a fuel shutoff. You will find that the Ford N tractor fuel sediment bowl and shutoff valve will thread right into either of the two holes in your aftermarket gas tank. Not original, but much easier to repair or cheap to replace.
If you go this route for the fuel shutoff, the center hole in the tank will not offer enough clearance for an N sediment bowl assembly over top of the valve cover for the engine, so use the threaded plug here and close it off. Put the N fuel bowl assembly in the other threaded hole on the side and you will find that you can reach this from the seat of your 600. Very handy.
Same-Day Shipping! Most of our stocked parts ship the same day you order (M-F). Expedited shipping available, just call! Most prices for parts and manuals are below our competitors. Compare our super low shipping rates! We have the parts you need to repair your tractor. We are a Company you can trust and have generous return policies! Shop Online Today or call our friendly sales staff toll free (800) 853-2651. [ More Info ]
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.