Chainsaw Repair

How bad is the original cylinder?  One little score line can still be used.  You could sleeve the cylinder but do you have a piston that will work with the sleeve or are you planning to cut a piston as well?  Its alot of work.  If your doing it as a project just to see if you can, that is one thing.  But if you really want to run the saw, I think I would look for the right parts.   

I would start with http://www.houseofhomelite.proboards.com/ and see what you might find.  There are some places with nos Homelite parts inventories around.  Another source may be Joyce a/k/a chainsaw lady who is another Homelite parts person.  You should be able to find her through chainsaw collectors,  http://www.chainsawcollectors.se/