No there is no recall on the moters
The oil to fuel ratio for a 2004 model, 25 hp Mercury outboard is 50:1, roughly one pint of 2 cycle oil, to six gallons of fuel.
2004
The correct spark plug gap for the 2004 model, 40 hp Mercury outboard 2 stroke is .040 in.
The 2004 model, 60 hp Mercury outboard uses an NGK BPZ8H-N-10, gapped to .040 in.
The correct gap is .040 in, for a NGK BPZ8H-N-10 plug.
The recommended gap is .040 in.
My 2004 Suzuki DF70 uses NGK BPR6ES plugs.
Take it to a repair shop.
SAE 5w20 any major brand conventional or synthetic oil.
2004
For a 2004 Mercury Mountaineer , 4.0 litre V6 engine : ( .052 to .056 inch ) * confirm with the Vehicle Emission Control Information ( VECI ) decal in the front of your engine compartment