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OMC "red plug"

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bluesideup

Member
Hello everyone,

I'm new to boat engines and happened to see this forum after ordering some parts. It' looks like a great forum with a lot of info. Thanks for the contributions.

Here's my question: I have a 1993 Evinrude 9.9hp electric start engine that I bought off craigslist (model# E10RELETM, remote controlled). It has the red plug wiring on it, but I don't have the boat side wiring harness. I thought that all red plug harnesses would fit the engine, but after looking around on ebay I'm not sure. Is there a specific harness for this engine or will any red plug harness work? I just need it for the electric primer and start.

I have the engine on the boat (14' Ebbtide Bass Master) and just manually prime and rope start it. It runs well at low-medium rpm, but when you increase the throttle beyond that, it bogs down. Could this be caused be not having the red plug and battery attached to the engine (engine possibly needs electrical input)? I've tried new plugs and fresh gas and it also does not help to squeeze the primer bulb on the fuel line when it happens, so possibly not the fuel pump.

Any info or insight on the red plug or motor would be appreciated.
Thanks,
Bill
 
The " red plug " was used from 73 up to about 95.------Any control with the red plug will work on that motor.-----The engine does not need electrical input to run properly.
 
racerone said:
The " red plug " was used from 73 up to about 95.------Any control with the red plug will work on that motor.-----The engine does not need electrical input to run properly.
Click to expand...

Thanks for the reply. Looking at some of them on eBay, some have more than 7 prongs (mine fits seven) and the end that fits the starter has lots of wires that look intimidating to set up.

Any thoughts on the engine problem? I don't have any tools to check compression or spark strength. A carb or fuel pump rebuild might be beyond my capabilities right now, but I'm not sure. Maybe I'm missing something simple. Any advice/thoughts is appreciated.
Bill
 
Better verify what I'm about to write here, but I believe not all engines use all the pins. But the boat side cable has them all so it will fit anything that uses the color. The unused ones just go along for the ride and don't do anything. Your carburetor's high speed jet may be clogged or dirty.
 
fdrgator said:
Better verify what I'm about to write here, but I believe not all engines use all the pins. But the boat side cable has them all so it will fit anything that uses the color. The unused ones just go along for the ride and don't do anything. Your carburetor's high speed jet may be clogged or dirty.
Click to expand...
Thank you.
 
you can do a carb clean.
you can use a computer keyboar so the carb clean will be easy for you, as any problems we can easy get you sorted out and
running again dead easy.

Now to take carb off is a pretty easy job, but if i was you and new to this type of thing,then i would take lots of pictures before
removing anything at all including the carb and its connectors or pipes etc.

Once you have the carburettor off the engine, again take lots of pictures and also screw in the screws on the sides of
carburettor and write down EXACTLY how many turns in untill they are lightly seated(fully in).
this way when you have cleaned and go for re-assemble its easy to know EXACTLY where to start with the settings.
lots of pics and a little video will help you big time, if you can video it while taking it aprt even better as youl have a
genuine guide on re-assembley.
Dont be scared of it ,youl be suprised how easy it is to do.
once you have this cleaned up the engine will be fine as the symptoms are just a bit of dirt or varnish gumming it up on
the high speed side.

like i say pics from the very beggining, as soon as that lid comes off then fire away from all angles with your camera to
keep a good record of it.
and dont delete pics of it all as you might need them another day,dont even delete blurred ones,be suprised how many
times a even a dodgy picture has that little bit of info your looking for.

hope this advice helps ya.

any problems just post a pic of an offending part on here and someone will give you the correct way to take it off or
clean or re-assemble it.

plus there is tons of diagrams on the net to help re-assembly as well as vids on youtube.


phill
 
Last edited:
fdrgator said:
Better verify what I'm about to write here, but I believe not all engines use all the pins. But the boat side cable has them all so it will fit anything that uses the color. The unused ones just go along for the ride and don't do anything. Your carburetor's high speed jet may be clogged or dirty.
Click to expand...

So if I bought this: http://www.ebay.com/itm/190857680263?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649

It should work by just plugging it in?
I also have to connect the starter motor to the battery. Does any one know if that is relatively easy? Sorry for all the noobie questions, but I just don't want to buy something that is incorrect or that I won't know how to rig.
Thanks,
Bill
 
phillnjack said:
you can do a carb clean.
you can use a computer keyboar so the carb clean will be easy for you, as any problems we can easy get you sorted out and
running again dead easy.

Now to take carb off is a pretty easy job, but if i was you and new to this type of thing,then i would take lots of pictures before
removing anything at all including the carb and its connectors or pipes etc.

Once you have the carburettor off the engine, again take lots of pictures and also screw in the screws on the sides of
carburettor and write down EXACTLY how many turns in untill they are lightly seated(fully in).
this way when you have cleaned and go for re-assemble its easy to know EXACTLY where to start with the settings.
lots of pics and a little video will help you big time, if you can video it while taking it aprt even better as youl have a
genuine guide on re-assembley.
Dont be scared of it ,youl be suprised how easy it is to do.
once you have this cleaned up the engine will be fine as the symptoms are just a bit of dirt or varnish gumming it up on
the high speed side.

like i say pics from the very beggining, as soon as that lid comes off then fire away from all angles with your camera to
keep a good record of it.
and dont delete pics of it all as you might need them another day,dont even delete blurred ones,be suprised how many
times a even a dodgy picture has that little bit of info your looking for.

hope this advice helps ya.

any problems just post a pic of an offending part on here and someone will give you the correct way to take it off or
clean or re-assemble it.

plus there is tons of diagrams on the net to help re-assembly as well as vids on youtube.


phill
Click to expand...

Thanks for taking the time to write all of that. When I get home from the trip I'm on, I'll take a look at it and see if it's something I might be able to do.
Bill
 
bluesideup said:
So if I bought this: http://www.ebay.com/itm/190857680263?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649

It should work by just plugging it in?
I also have to connect the starter motor to the battery. Does any one know if that is relatively easy? Sorry for all the noobie questions, but I just don't want to buy something that is incorrect or that I won't know how to rig.
Thanks,
Bill
Click to expand...
I'm going to bow out and defer answering that to somebody that knows for sure. I don't know enough about that particular model to say that.
 
All depends on what exactly you are going to do.----Operate at the motor or a remote helm.-----That wiring harness will work but your best bet is to get a " remote control box " as that will have everything you need exept for length of cables for your application.
 
racerone said:
All depends on what exactly you are going to do.----Operate at the motor or a remote helm.-----That wiring harness will work but your best bet is to get a " remote control box " as that will have everything you need exept for length of cables for your application.
Click to expand...

The motor is operated remotely from the helm. It has OMC controls for the throttle and shifter and is remotely steered-there is no tiller. To prime the engine (no choke), you have to remove the engine cover and move the primer lever, then pull the rope to start. I think the above red plug on ebay is used to electrically prime and start using the start key.
 
If you have a control box with throttle / shift cables then that E-bay item is what you need.----Does the motor have a solenoid for the starter ??
 
racerone said:
If you have a control box with throttle / shift cables then that E-bay item is what you need.----Does the motor have a solenoid for the starter ??
Click to expand...

Yes, it has a starter solenoid. I need to figure out how to power it from the batter and I guess the started switch and primer is powered through the solenoid.
 
fdrgator said:
Better verify what I'm about to write here, but I believe not all engines use all the pins. But the boat side cable has them all so it will fit anything that uses the color. The unused ones just go along for the ride and don't do anything. Your carburetor's high speed jet may be clogged or dirty.
Click to expand...

By the way, could it just be the high speed jet needs to be adjusted (on the front of the carb)?
 
There is no adjustable high speed jet on that motor.----It is fixed and found inside the carburetor.-----------There is an adjustable low speed jet on it.
 
racerone said:
There is no adjustable high speed jet on that motor.----It is fixed and found inside the carburetor.-----------There is an adjustable low speed jet on it.
Click to expand...

Ok, thanks. Just two more questions and I'll let his thread go:

The manual cautions that if the motor is run without a battery attached, it will damage the electrical system. Is this still true and if so, why.
The manual recommends QL77JC4 spark plugs. I have installed new QL82C's based on what I've read fits that motor on the internet. Are either ones ok?

Thanks for all the help. I was sent an owners manual in error that was for a 1992 model (the one I referenced above is the correct,1993 model). If anyone needs a manual for a 1992 9.9 evinrude, let me know. I'll send it to you for free.
Bill
 
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