Hi, at my wits end with this tractor. A bit of history. Engine was rebuilt 4 years ago, been running great until 2 months ago when it became hard to start than would not start. Tractor mechanic replaced distributor, was shot. I had already replaced plugs, points, condenser, coil, oil/filter, l etc but to much slop. So get it back and it starts running very hot, and rough. Back to mechanic. Distributor faulty so another new distributor. Get it back, runs, but not much power and again running hot. When I shut it off I got a radiator bath out the cap, emptied radiator and engine of all fluid. (after 1/2 hour of mowing. So back to mechanic with my thought it was blown head gasket. He finds a slight leak in radiator (which it always had) send it out for repair. I get tractor back, still not running right under load, running hot. Back to tractor repair shop. New head gasket. Get it back, starts right up, idles good, runs smooth to 1/3 throttle out of gear/no load. Under load, no power runs rough. Still running hot. I notice exhaust leak around rear of manifold so I get some gaskets and fix leak. Starts right up, sounds better but still no power under load. I shut it down and go to restart it, won't start. Not firing at all.
So, I check all fuel filters, clean as a whistle. replace oil in air filter/clean. Carb bowl is filling up. Check #3,4 plugs, dry as a bone and very white. pull off carb, open up, very clean inside. Blow out all jets and holes. needles clean, look like new. (carb is 2 years old). Install new gaskets, reinstall. Engine cranks forever but will not fire. When I stop cranking gas leaks out bottom of carb. Seem to be coming from the small hole in dimple in front of drain plug. Pull plugs, all dry as a bone. Idle mix screw is at 1/3 out, main 1-3/4 turns out. Just not getting fuel. Any idea's? HELP!
So, I check all fuel filters, clean as a whistle. replace oil in air filter/clean. Carb bowl is filling up. Check #3,4 plugs, dry as a bone and very white. pull off carb, open up, very clean inside. Blow out all jets and holes. needles clean, look like new. (carb is 2 years old). Install new gaskets, reinstall. Engine cranks forever but will not fire. When I stop cranking gas leaks out bottom of carb. Seem to be coming from the small hole in dimple in front of drain plug. Pull plugs, all dry as a bone. Idle mix screw is at 1/3 out, main 1-3/4 turns out. Just not getting fuel. Any idea's? HELP!