Here's what I know. First let's not get the 162 confused with either the 162 SE or SG. The SG had a heated handle. I don't really know what SE or SG really stood for. But the original 162 without the letters was not the same saw as the SE/SG's. The 162's we ran in BC , and I still have the parts manual they used to give you with a new saw . The SG and SE part # cylinder 504 12 60 58 48mm. Ring and piston 501 51 12 01. Crankshaft 290 12 30 01. The 162 cylinder 503 26 88 22 49 mm ring and piston 501 53 66 02A, 03B, 04C. They had A,B, and C bores like the 61's but 2 piston rings. The crankshaft 503 27 80 01. The SE/SG's had the same crank shaft and piston ring as the early 61. The 162 had no common part #'s. It was a different saw than the later SE/SG models. I never saw SG or SE on the tag until Electrolux. The 162 that came out in 76 was 62.5 CC and had 4.4 hp. The SE/SG were 61.5 cc with 4.1 HP.