John Deere 720 Automatic Fuel Shut-Off

[Blight]

The carburetor I was talking about early came with an automatic fuel shut off. I kind of like to keep it
unless they are a pain in the butt. Has anybody had experience with them? Are they easy to work on
and maintain? Thanks

 

[mijohn]

No, they are not hard to work on. In fact quit easy to maintain. I,ve had a 720 twenty since 1970. And I only had to repair the fuel shutoff once in the last 49 years. To me that isn't much of a pain. I clean the sediment bowl a couple of times a year and check the diaphragms at same time. If you start to gain engine oil after the tractor has been sitting for a few days then you have a leaking diaphragm. You can get new replacement ones from Steiner Tractor Parts; Ph# 1-800-link_disallowed. And the new ones are alcohol resistant. And they cost just a few dollars and are not that hard to change. Hope this answers your questions, john

 

[jd2cylman]

Diaphragms are still available from Deere for ~$10.00 ea.You'll need 2. Just pay attention to how it comes apart, and reassemble it the same way. Some people will tell you to toss it and use a regular shut-off, but I like the original look. You just have to monitor your oil for gas contamination. That's a sign you need new diaphragms.

 

[Blight]

Make since that when I was checking the oil I smelled gas in it. I
thought maybe a sticky float. Thanks for your help.

 

[fixerupper]

Might be a good idea to get them from Robert s carb. Then you will know you have good diaphragms you won t have to replace again in a year or two.