Time to dig into the carb, just because it's new old stock. Doesnt mean the diaphragms didnt get dried out from sitting on the shelf. Typically when you have lack of adjustability of the carb, low max rpm it suggests the carb needs some work. Kits are fairly inexpensive, and easy to Install.Clue of?
Normally what happens is it is easy to kick over but the piston moves too fast since there is no/low compression and it will not stay running as the combustion blows by.I doubt it, unless it has next to no compression to begin with, and then it would start hard (I would think)
Are the rings directional for that model?Found compression issue. Pulled cylinder and found a broken ring. Don’t ask how but no scoring. Some debris in transfers and 1 small piece in case. Cleaned it all up and now waiting on piston kit. Going to kit carb and start over when I have piston in.