Re: how do i de-winterize my 40hp johnson outboard
Assuming it was all fully serviced when winterised
Set it up with a water supply, in a barrel ,or on muffs if you must, and a fresh fuel supply.
Take out the plugs clean off any oil and check the gap.
Crank it a few times to expel all the fogging oil.
Replace the plugs and start it up.
When the smoke dies down check the cooling is OK