Get a tow to the dock
Find a new mechanic
Pressure test your engine cooling system
If you are lucky and it's just the manifolds, buy a lottery ticket
Good luck on finding manifolds
My first thought is the engine is running hot. With your new to you boat. Make sure you do all the maintenance the prior owner didn't do
Like the impeller service, annual drive service, u-joint inspection, alignment check, etc.
Raise drive
Drink beer
Block of wood under skeg
lower drive
Pull trim cylinder pins
Disconnect shift cable
Remove cable keeper
Drink another beer
Remove the two bolts in the helmet pin
Use two 1/4-20 x 1-1/2" fully threaded bolts do jack the steering pin out of the gearbox
Tilt helmet forward...
