For regular SM carbureted tractors, serial # F 28175 or L 504802 and higher numbers = type 2 SM tractor. Stage 2 gas that came with the countershaft driven hydraulic pump have a bracket bolted to the left side of the rear fuel tank support. The bracket has three holes to support choke, starter and belt pulley gear box operating rod. Stage 2 with live hydraulic has a different bracket bolted to the reservoir to support the 3 rods in the same position. With the reservoir there's only a small fuel tank support bolted on top of it. Stage 1 have no bracket bolted on the left of rear tank support. They have no starter operating rod, choke goes through hole in the support, operating rod and small bracket for belt pulley gear box is bolted on right side of rear tank support. Stage 1 gas came with 2 bolt starter mounting clutch housings, stage 2 came with 3 bolt starter mounting. Stage 2 gas and diesel used the same clutch housing. Before stage 2 gas and diesel used different clutch housings and they are both different than the stage 2 housings. Took IH from 1941 to 1953 to decide they could standardize the housings.
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Today's Featured Article - Identifying Tractor Noises - by Curtis Von Fange. Listening To Your Tractor : Part 3 - In this series we are continuing to learn the fine art of listening to our tractor in hopes of keeping it running longer. One particularly important facet is to hear and identify the particular noises that our
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