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Question

I have purchased aboat with a mercury 50 engine on it ibeleive it is probably quite old , i would like to know is it a 4 stroke or will it require oil in the petrol

Answer 1

It's a two stroke. Mix it at 50:1.

Answer 2

google!

Answer 3

if the engine is "quite old" then it is probably a 2-stroke engine which requires an oil/fuel mixture. To know for sure, take the hood of the engine off. if there is a round s***w-on filter and a dip stick ( will be yellow ) then it is a 4-stroke engine, and uses oil like your car.. the oil only lubricates and does not mix with the fuel. depending on what year exactly you may find in the front of the engine ( closest to the boat ) a plastic holding tank. if you have that, it is an oil injected engine and you will need to keep it full to the line with oil. if there is no oil in it now, you may need to find out if they ( previous owner ) disconnected the oil injection system and put a new fuel pump on. some people do this once the engine gets some age. they go back to mix the oil in the fuel tank so not to risk blowing their engine up if the injection system fails. if you find no filter, and no holding tank, you will need to mix the fuel and oil together in the fuel tank. again... depending on the year you are probably going to mix it at 50:1.

Answer 4

It doesn't matter what type of engine it is if its old it will let you down sooner or later.

Buy a brand new outboard of similar power output and by another brand new outboard of say 20 HP to get you home when the Brand New 50 HP eventually malfunctions.

A comprehensive box of flares.  A proper ship to shore radio is a must and tell the coast guard on this radio when you are going out where you are going and when you are likely to be back.

Make certain you have at least one spare anchor, anchor warp and anchor chain.

Enjoy your boat

Answer 5

requires oil