It takes me about an hour to rototill my garden with an old Troybilt Horse with a 7hp Kohler. Yesterday after about 45 minutes of use the engine started to cut out under load. I figured it was low on fuel so I shut it down and filled up the tank. It started right back up but with the same issue, kept cutting out while trying to till. It would idle fine and had enough power to drive itself back to the barn. I let it sit for about 4 hours, started it up on the first pull and was able to finish the garden which took about 15 more minutes.
Any idea what is going on? If it was a bad coil wouldn't it start cutting out after maybe 10 minutes? What is happening after 45 minutes of hard use? I do know the engine had a valve job maybe 15 years ago. The machine is probably from the late 70s. It gets used a lot, pretty much all summer long for weed control. Always starts on the first or second pull and runs good.
Any idea what is going on? If it was a bad coil wouldn't it start cutting out after maybe 10 minutes? What is happening after 45 minutes of hard use? I do know the engine had a valve job maybe 15 years ago. The machine is probably from the late 70s. It gets used a lot, pretty much all summer long for weed control. Always starts on the first or second pull and runs good.