[sawdustdad]

I restored this 108 last winter and paid the local Case/IH dealer to overhaul the engine. Piston, rings, rod, valves. Cylinder was in spec (they said) so standard piston and rings were installed.

I put it all back together and have been using it all summer, cutting an acre or so every week. Engine seems stronger than it used to be, so I've been happy.

Until last week. After cutting for half an hour (heavy grass, working hard) the engine started to lose power and blowing lots of smoke out of the breather cover. Seems like the engine was working hard, but going nowhere, slowing down, but at full throttle. Barely finished cutting the grass, and put it away, not sure what was going on with it.

Today (a week later), it started fine, ran great for about a half hour (again, thick grass, but cutting it fine) and it started doing it again--losing power and smoking from the breather cover. So I shut it down. Went to go get the 1650 from the other house a few hours later to finish cutting the grass. Went to put the 108 on the trailer to bring home to fix. It started fine, no smoking, so I put it on the trailer. Now I have it home, so looking for ideas on where to start. Is it overheating? Or something else.