i like to use diesel
instead of alcohol. lube things up nicely, give the mechanics the alcohol(rum or beer
matters not) then fill cylinders with diesel(plugs out) and pour it down carb also, do it a few times.
it sounds like you have to remove recoil mechanism due to lack of lube.
Warning as tempting as it is PB blaster is not recomended for this. it will eat soft parts
once you get it turning freely run it for a long
over every thing before closing cover.
my last 6hp sunk three times once kids
stole and flipped dinghy
and i found it after being submerged three days!