[nerius]

I got the sleeve out using the zip tie method (Youtube). The method described there (a video made by a very articulate gentleman and sponsored by Boca Bearings) is to pass a zip tie through the exhaust port while the cylinder is at the bottommost position. Then, install the flywheel and nut for added leverage. Turn the flywheel forcing the cylinder up. The cylinder will butt up against the zip tie. This force will push the sleeve upwards. If too much force is needed the cylinder will do a shear cut of the zip tie. Putting this whole assembly into a vise and having had this sit in solvent for five days (and then spraying it with WD-40 afterwards) I was able to get the sleeve to budge slightly by putting two beefy zip ties through the exhaust port and then forcing the cylinder up in manner described. The zip ties were placed side by side in order to maximize the amount of perimeter being "pushed" such that chance of damage would be minimized. Once I got the sleeve up a bit I was able to lubricate the newly exposed sleeve surface and then push the sleeve back in. Doing this several times finally freed the sleeve up.

The cylinder cut a few zip ties before it finally worked using dual zip ties of the beefy variety.

Measured the cylinder diameter, it's 16.43mm. The stroke from topmost to bottommost position is roughly 16.6mm. This would make the cubic millimeters on this engine about 3500. Engine sizes such as ".21" are using which units I wonder.

Luckily I didn't do too much damage my first time rebuilding an engine. It was tough getting some of the parts apart after this thing has been sitting around for almost twenty years unused.