4HP Johnson Year and maintenance tips?

[14ft_fever]

I just bought a used 4HP Johnson from an auction and I need to find out what year it is. The engine looks like it has been sitting a while and has extremely low hours on it. What maintenance should I perform on it to ensure it will last for many years. Thanks.<br /><br />Model # 4W75A<br />Ser # E4150633

 

[jegervais]

Re: 4HP Johnson Year and maintenance tips?

It's a 1975. I would go thru the carburetor - clean and install a kit. Replace water pump and change gearcase lube. Quality MARINE grease to any and all grease fittings. Initially I would suggest a tank of 25:1 fuel/oil premix, there-after 50:1 will suffice.<br /><br />-John

 

[14ft_fever]

Re: 4HP Johnson Year and maintenance tips?

Thanks for the help.