Cannot seem to identify Mercury 75 HP outboard

[SgtDeadeye]

I have scoured the Internet, and what I've learned is, finding out which motor you have and the year is a downright pain in the buttocks.

I bought the motor used, it runs, but doesn't idle well. I'm NOT a boat mechanic, but I am familiar with small engines.

To start, I want to rebuild the carbs as this thing has sat a little while. The problem is, I cannot find my serial number anywhere online, and the ranges for serial numbers are somewhat varied.

Here is what I do know.

It is a 75hp
The serial number stamped on the transom plate is A169131
The number stamped on the carb is 73408
I know it has 4 spark plugs, therefore is a 4 cylinder
I know that it takes a gas oil mix so it is NOT a four-stroke engine


What I've been told by former owner who is the widow of the guy that owned it

He bought the motor in 88
She thinks he bought it new but isn't sure.

What I've been able to find.

Judging by most serial number series this appears to be an 1985 motor.
I know that that wire box was replaced once and the part number was 114-5772 which was used from 84 to 88

Basically, I am trying to start with a carburetor rebuild, but I do not want to get the wrong part.
I do understand that it does have two carbs (at least I think I understand that) and I need a kit for each carb.

Can anyone help identify this motor and/or provide a part number for a carb rebuild kit (Not just a gasket kit)

I certainly appreciate it.

Deadeye

 

[aussieflash]

Re: Cannot seem to identify Mercury 75 HP outboard

1985 4 cylinder 75hp.
812953 | REPAIR KIT - CARB. Around $70 from Crowley Marine,though check out Ebay...might get lucky.

 

[carholme]

Re: Cannot seem to identify Mercury 75 HP outboard

S/n comes up as:

75 75 (R4) 4-cyl 6613221 0A197881 1985 USA

From here:

http://www.marinshopen.se/Motorer/O...Mercury2takt4cyl4085hp/tabid/487/Default.aspx

It is a model:

1075625 MERCURY 1985 75

Parts Listing:

http://www.crowleymarine.com/mercury-outboard/277.cfm

Service Manual P/N: 90-86134--4

or you can use this condensed version in the short term. Let the page load for 30/40 seconds and download to your computer soonest as the link does not remain active for long.

http://web.ebscohost.com/serrc/pdf?...7-bf82-44cb26b8fff8@sessionmgr13&vid=4&hid=17

Gerry

 

[SgtDeadeye]

Re: Cannot seem to identify Mercury 75 HP outboard

1985 4 cylinder 75hp.
812953 | REPAIR KIT - CARB. Around $70 from Crowley Marine,though check out Ebay...might get lucky.

Wow, Thank you so much, I certainly appreciate the information. I guess I feel lucky to get close, and as it turns out, I did have the year right.

Much obliged!

 

[SgtDeadeye]

Re: Cannot seem to identify Mercury 75 HP outboard

S/n comes up as:

75 75 (R4) 4-cyl 6613221 0A197881 1985 USA

From here:

http://www.marinshopen.se/Motorer/O...Mercury2takt4cyl4085hp/tabid/487/Default.aspx

It is a model:

1075625 MERCURY 1985 75

Parts Listing:

http://www.crowleymarine.com/mercury-outboard/277.cfm

Service Manual P/N: 90-86134--4

or you can use this condensed version in the short term. Let the page load for 30/40 seconds and download to your computer soonest as the link does not remain active for long.

http://web.ebscohost.com/serrc/pdf?...7-bf82-44cb26b8fff8@sessionmgr13&vid=4&hid=17

Gerry

Wow, you guys sure do know your stuff. Thank you so much for that information it was refreshing to learn I was at least on the right path. Awesome information! Many thanks!

 

[SgtDeadeye]

Re: Cannot seem to identify Mercury 75 HP outboard

Wow, Thank you so much, I certainly appreciate the information. I guess I feel lucky to get close, and as it turns out, I did have the year right.

Much obliged!

When looking at that part number however, it claims it is for a 3cyl.. Which makes me a bit hesitant because I know it's a four cylinder.

thoughts?

 

[carholme]

Re: Cannot seem to identify Mercury 75 HP outboard

Not too sure I understand what you are referring to. Your engine is a four cylinder and if you look under Carburetor in the parts lisiting at the very last two entries on the page, you will see P/N 812953 REPAIR KIT - CARB.

Gerry