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Identify this part, win $10

Old 08-19-2020, 04:14 PM
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Default Identify this part, win $10




Ok, first off, I can be an idiot. I have practiced long enough and have really gotten good at it.

I replaced an impeller a year ago on my ‘99 Mercury Optimax 150 and I now have this part left over. To be honest, I’ve run the boat over a year without it due to just finding it in my battery compartment today. I must have set it on the rail and it fell down there. My guess is it had to come from when I did the impeller as I’ve done no other major work to the boat or motor.

I’ve done some research and can’t find it on a parts diagram. I’ll give the first person who correctly identifies the part and tells me where it goes $10 through Venmo or PayPal, or by mail, etc. Let the contest begin................

Last edited by Casey6404; 08-19-2020 at 04:15 PM. Reason: Forgot info
Old 08-19-2020, 04:24 PM
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I don't know exactly what it is but at inch 1 and at inch 5 it has been worn down some. It is a pin of some sort... Maybe to tilt the motor up and secure it? how about for your trailer breaks? No need for $$ if I'm right =-)
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Old 08-19-2020, 04:33 PM
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It does look wheel related since it looks like a lug nut stud that gets pressed in, with the ridges around the head. I am guessing some type of wheel alignment tool like shown below. It can be tough to get a heavy tire onto all of the lugs, maybe this helps, or maybe it is for a specific make like the BMW one below.

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Old 08-19-2020, 04:36 PM
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100% the knurled section is for press fit to something
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Old 08-19-2020, 04:43 PM
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Pin to limit tilt/trim going all the way down?
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Old 08-19-2020, 04:48 PM
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That is an automotive hinge pin. Looks real similar to one used in a Chevy truck
Old 08-19-2020, 04:49 PM
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door hinge pin
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Boat Hound, Casey6404, hottoddie, HuntersDad, KrazyKona, proline34, wahoossi and 2 others liked this post. (Show less...)
Old 08-19-2020, 05:04 PM
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I asked the wifey and she had no clue.
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Old 08-19-2020, 05:08 PM
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Originally Posted by maintenanceguy View Post
door hinge pin
Times two , pay the man !
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Old 08-19-2020, 05:09 PM
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It’s the adjuster pin for how low the motor will go when fully trimmed down. (Posted above also)
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Old 08-19-2020, 05:13 PM
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Originally Posted by Smitty 45 View Post
Times two , pay the man !
Agree X2. Hinge pin that got mixed in with the motor parts. Pay the man his $10
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Old 08-19-2020, 05:14 PM
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Brass door hinge pin, similar to lots of these shown here.
Could of got in the boat in a jillion different ways........including a crow dropping it in there.
https://www.homedepot.com/b/N-5yc1v/...e%2Bpin?NCNI-5
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Old 08-19-2020, 05:24 PM
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I'd go with the hinge pin thing too.... but then I looked closer... Near the bottom is that a machined grove for something like a "C" clip?
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Old 08-19-2020, 05:27 PM
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It certainly looks like a door hinge pin, (thanks other posters) they make for a great improvised punch tool.
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Old 08-19-2020, 05:30 PM
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Originally Posted by 757SeaHunt View Post
It certainly looks like a door hinge pin, (thanks other posters) they make for a great improvised punch tool.
I've never seen a door hinge pin with the serrated end like that. They are usually just true "pins."

Last edited by Cheesesteak; 08-19-2020 at 05:36 PM.
Old 08-19-2020, 05:55 PM
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Originally Posted by Cheesesteak View Post
I've never seen a door hinge pin with the serrated end like that. They are usually just true "pins."
I would have agreed with you 100% until 10 minutes ago.


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Old 08-19-2020, 05:58 PM
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Originally Posted by 757SeaHunt View Post
I would have agreed with you 100% until 10 minutes ago.

Nope , it's a house door pin .
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Old 08-19-2020, 06:27 PM
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Originally Posted by Smitty 45 View Post
Nope , it's a house door pin .

House door hinge pins don't have a shoulder on it much less a knurled section?
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Old 08-19-2020, 06:29 PM
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I don't think it's a house hinge pin. I could use a better picture, but it looks like it's machined thinner in the middle. Household door hinge pins are the same diameter the whole length, with the exception of the knurl on one end.

It is more similar to the auto door hinge pin, but I think longer than any of those that I know.
Old 08-19-2020, 06:47 PM
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It's an alignment stud for his lower unit. Must have fallen out during disassembly. Pay up.
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