OS FS-61: A Look Inside

So I have been taking some chances on buying engines from eBay in the last few months. I have been very happy with my purchases. My latest purchase for a whopping $52 was a vintage 1983 OS FS-61 four stroke engine.

This engine was listed as used and the box was very worn and tattered. It was not a complete package either. It came only with the box, a print out of the instructions manual, a spare head shim a few o-rings and a new piston ring. I was not disappointed in these things, after all, this was a used engine right?

WRONG!!!

I was going to make this a subject of another box to the bench review but I would not have been able to do that until Saturday. I decided to do A Look Inside instead and boy am I glad I did. As it turns out this engine is NEW and never run!!! What a great surprise! I was going to run this as a used engine, but now knowing it has never seen fuel I need to treat it very differently. The video shows the internal condition, but what it can't show is the smell of the tooling oil from the factory. There was not a single hint of glow fuel residue or smell in this engine at all!