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Message: <blockquote data-quote="eyexer" data-source="post: 209236" data-attributes="member: 315"><p>Got more of the tedious work done tonight after work. Every piston pin has little needle bearings to install in the connecting rod head.  Couple hours of pissin around and I got em all on the rods and rings installed. Next step to install in the cylinders.  The Optis are a strange motor in that there are different pistons for the left and right sides. They have a convex dish in the head unlike any other two stroke piston I’ve seen. And there are differences in years. Some years have a round indent some have an oval one. There is also a difference in main bearings. Some years have a singe row of needle bearings some have a double row. This motor has a double row and round indents.  It’s something you have to know before you order your overhaul kit. It’s been interesting anyway. [ATTACH]24648[/ATTACH]</p></blockquote><p></p>

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