tractor won't stay running

[knk810]

have a cub cadet 125 1970, rewired voltage regulator and have a brand new battery, starts right up, won't stay running...I am thinking its the generator...any ideas

 

[bajabum]

A new (charged) battery should run the engine a looong time!
I'm more inclined to think clogged fuel system.
Also check the vent on the fuel cap.
Could also be cr*ppy modern gas clogging up the carb.

 

[knk810]

tank has an old screw top with 3 holes, I will drain the tank and blow out the fuel line...it ran just fine last year and then it just crapped out while mulching leaves

 

[rcbe]

also check the fuel tank cap vent is not plugged up....

 

[knk810]

Ok , Thanks for all the help, tractor is running but my new issue is it is back firing and when I throttle up, the rpms are alot faster than before but when I engage my mower deck, 42 inch, rpms decrease a little.. any suggestions?