No, the 1010 didn't have valve-seat inserts. Valve seats were ground into the head casting. The 1010 DOES have exhaust valve rotators.
The new engine that followed in the 350 also did not have any seat-inserts. That was the Dubuque/Manheim 300 series engine. 3 banger in the 350 and 1020, 4 banger in the 2510, 2020, 450, etc. 6 banger in a 540 skidder, 4030 tractor, etc. I don't recall seeing factory seat inserts in any of them until turbos came out - or French built (Saran) engines were used.
As I recall, it was the Deere Waterloo engines that first appeared with seat-inserts but maybe somebody will correct me.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let�s make one more addition to our series on hydraulics. I�ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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