Gary: Sorry about your situation.
When I was probably age 10/12 ?? (been while!) My father bought me a Yamaha 60 CC minibike. We lived near woods but you had to cross the creek to get there.
Went riding one day, had rained and water was high. Engine stopped while I'm in creek, I dropped bike with water coming at me. Dragged bike out of water, took home and let sit for probably a year. Engine was totally siezed.
Over following winter, with hardly any tools (I'm talking I used plieres, screw driver and maybe a hammer.... My father had ZERO tools to speak of)
Anyway, I wrestled that thing out of the frame, onto a table in basement. Took entire thing apart. Diagnosed that it LOOKED like it needed "this thingamijig" or two...
Took me several months to get this done. Put things back together and it fired right up the first attempt, though I recall it taking a number of kicks to get the fuel through the system.
Ended up giving it to a neighbor friend who was several years younger than me.
(couple years later, I got another dirt bike.....but this time, it was a brand new Yamaha YZ-465, a bit of a jump from the 60 CC bike!)
I did all this from wits and trial/error. I didn't have a manual for anything at this age, no help from Dad.... was just me and my project.
Water isn't your friend, especially the longer you wait.