Yes, I would prefer to hear what was going on and the comments from the crowd.

I bought a Poulan 46 from lawnstation. It was a piece of junk. Air filter was completely plugged, 1/8" of carbon on the piston. Cyl was corroded. This is Remanufactured? Had very low compression.

Well, decided to use it anyway. Gave it to abuddy of mine to mill the flywheel. He did that and milled the head fins. But then he mounted the whole engine in his lathe and turned the flywheel to get it "perfect". Did not oil engine or cover ports, so cyl was trashed. You could spin the prop with your finger and there was no compression.

A buddy of mine got me a 50cc chrome piston/cyl. But it was a newer with a different bearing size (46 has 2 variations.) Ordered seals and cut the seals off old bearing. Then still would not run, swapped coil from another and it popped but ran bad. Swapped to a Q-52 carb and it ran. Hard to start so added C&H ignition.

So, only thing I used from the lawnstation chain saw was the crankshaft. Everything else was bad.

Short answer: The 50cc is identical outside to the 46, so weight would be the same; just a different piston/bore.

Mine is about 4.5 lbs with muffler and mount. I never machined the fins off of the cyl to save weight. May do so rather than adding tail weight.