johndeere140/h3

keithclarke

New User
have a 1974 jd 140h3 that quits runing after 10 minutes,have rebuilt carb, new points,condenser,sparkplug,coil,flushed fuel system and tank.tractor acts like it just like ran out of fuel,but starts right back up.any help would be greatly appreciated. thankyou.
 
POSSIBLE loose valve seat.

What serial number... first ones had an under-flywheel mag with breaker points, then they went to electronic ignition for a while, then to an automotive-type 12 Volt coil and breaker points system.

Do you have a manual for the engine... lots of troubleshooting tips in the factory manual.
Link to official manual....
 

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