Mercury 500 info

[XCoastie]

I have a Merc 500 attached to a 24 foot pontoon boat. Not fast but it gets us there. I need to do some maintenance on the engine and I need a starting point. Where is the engine I.D. located on it? All I can find is part of a plaque at the front and it is unreadable. There is some stamped writing on the block that says Full-Jeweled and under that it says Super-Thunderbolt. I have no clue what year model it is. Any help anyone can give me would certainly be appreciated.<br /><br />Thanks,<br />XCoastie (Semper Paratus)

 

[12Footer]

Re: Mercury 500 info

The plaque you cannot read is the one you need.<br />Figures, don't it? Some mercs have the serial number stamped on the port side of the block, on a 1" round aluminum cap..It looks like a freeze plug on a car.<br />Also, look on the hinge plate, below the transom mounts for another sticker.

 

[sprintflyer]

Re: Mercury 500 info

It has been several years ago but I had a 73 model merc 500. <br /> If I am remembering correctly the numbers you need are stamped on the tube where the steering cable hooks up.<br /> The Thunder Bolt you are referring to is the ignition system on that motor. I wish I could remember more but as I said earlier it has been a few years since I seen it.<br /><br />Hope this helps,<br />sprintflyer