Re: Stringer outdrive
Remove the prop and make sure it's not a failed propeller hub, but 1982 is not electric shift and if it started to overheat after propulsion was lost, your water pump shaft has most likely failed.
Get a factory manual from outboardbooks.com or ebay and follow the process to remove the outdrive and then take the upper gearcase out. Remove the battery from the boat before disconnecting any shift cables.
The impeller housing and shaft come out of the upper after it is on a work bench.
It will be good practice as you'll need to do that every 2 to 5 years or so to replace your raw water impeller and grease the splines so the shaft doesn't fail again. more like 2 years on a moored boat and 5 on a trailered boat.
Castrol Pyroplex Blue or similar waterproof grease will stick in those splines better than cheap stuff.