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I have a 1979 Mercury outboard 115 hp. I have replaced the
I have a 1979 Mercury outboard 115 hp. I have replaced the internal wiring harness, rectifier, starter solenoid, choke solenoid rebuilt carbs and fuel pump installed new trigger on distributer and reb… read more
Yachtwork
Yachtwork
3,164 satisfied customers
I have a 1979 Mercury outboard 115 hp. I have replaced the
Second Opinion] [Second Opinion] I have a 1979 Mercury outboard 115 hp. I have replaced the internal wiring harness replaced the choke solenoid and the starter solenoid and the rectifier. I have teste… read more
Ted G.
Ted G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,145 satisfied customers
I replaced the brushes on my starter and replaced the
Second opinion] I replaced the brushes on my starter and replaced the starter solenoid on my 1979 Mercury outboard 115 hp. When I turn the ignition key I get nothing not even the sound of a click of t… read more
NicholasH311
NicholasH311
Owner/ lead technician
motorcycle and marine certifications
185 satisfied customers
I replaced the brushes on my starter and replaced the
I replaced the brushes on my starter and replaced the starter solenoid on my 1979 Mercury outboard 115 hp. When I turn the ignition key I get nothing not even the sound of a click of the solenoid. … read more
Yachtwork
Yachtwork
3,164 satisfied customers
Looking for a complete wire harness for an early 1970's 115
looking for a complete wire harness for an early 1970's 115 hp Mercury outboard, serial number(###) ###-#### … read more
Jason
Jason
Marine Mechanic
24,193 satisfied customers
I have a 1979 Mariner 90 hp and the ingition switch went
I have a 1979 Mariner 90 hp and the ingition switch went out. It had one where you had to push a button to choke. The only one I could find you have to turn the key and push key in to choke. The choke… read more
Noel Schembri
Noel Schembri
Marine Mechanic
Diploma
3,046 satisfied customers
Hp 50 - 500 mercury control 76334A15 can be replace by? 1979
good day sir hp 50 - 500 mercury control 76334A15 can be replace by ? … read more
Noel Schembri
Noel Schembri
Marine Mechanic
Diploma
3,046 satisfied customers
I have a 35hp Johnson outboard early 80s model and after
I have a 35hp Johnson outboard early 80s model and after replacing the water pump it began to lose spark intermittently, and then lost spark altogether... where do I start troubleshooting the electric… read more
briggs archer
briggs archer
master marine mechanic
Associate Degree
403 satisfied customers
I have a 1979 mercury 40hp that im not getting no spark to
I have a 1979 mercury 40hp that im not getting no spark to the plug. But if I touch the screwdiver inserted in plug wire I get shocked when turn key off after trying to start… read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,730 satisfied customers
I have a 1976 115 hp in line 6 cylinder Mercury outboard. I
I have a 1976 115 hp in line 6 cylinder Mercury outboard. I accidentally connected the two posts on the battery by dropping a wrench between them. I'm assuming the rectifier is fried, but my starter m… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
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, 1979 Mercury 40 HP 2 Stroke Outboard Motor Problems -
1979 Mercury 40 HP 2 Stroke Outboard Motor Problems - Need Help!Serial Number #5253313This motor would run about 10 minutes and then shut off. Wait about 2 hours and it would start again, and run about 10 minutes and then shut off. It did this several times, then it got to the point that it would not start at all.Here is what I have done thus far.I have replaced all the old parts with NEW ones:Stator: #18-5856Switch Box: #332-4911A5SolenoidWiring Harness on Motor has been replacedRectifier: # ***** Installed this one brand new. When I tried to start the engine, the Rectifier locked OPEN and is now ruined. So I replaced this with the CDI unit noted below.CDI Regulator Rectifier: #194-5279 There is still no fire to the plugs. Once you DISCONNECT the Yellow Wires from the Stator to the Rectifier you have fire; makes no difference whether you turn it over with the key switch, or take the wiring harness loose from the engine and pull it with the rope.Also, if the Yellow Wires ARE CONNECTED no matter how you try to start the engine it WILL NOT start.The ORANGE WIRE from the kill switch has been disconnected the whole time I have been doing these tests. … read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,730 satisfied customers
Im trying to replace a ignition key switch tohatsu
Hello, im trying to replace a ignition key switch for a tohatsu 40hp outboard mid 90's to a standard aftermarket ignition switch color codes are different and im not knowledgable in tohatsu outboards … read more
Charles
Charles
Certified Mercury Tech
5,752 satisfied customers
when my 1995 115 hp mercury outboard gets warn the alternator
when my 1995 115 hp mercury outboard gets warn the alternator goes up to 16 on gauge and battery bubbles then when i shut it down it will not start again… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
Hello. I have a 1974 Mercury 40 (402) that required a complete
Hello. I have a 1974 Mercury 40 (402) that required a complete rewiring. I replaced everything electrical. My hang up is the internal wire harness that came from CDI. It mentions a red (18 awg in harn… read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,730 satisfied customers
changing a 115 hp mercuy outboard to a 1987 50 hp eninrude,can
changing a 115 hp mercuy outboard to a 1987 50 hp eninrude,can i tap into the 1991 harness^ need to know which calours totap the plug into… read more
Jeff G.
Jeff G.
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Vocational, Technical or Trade Scho
4,730 satisfied customers
Have a 1998 Nissan NS90a EPTO..... wires were crossed at the
Have a 1998 Nissan NS90a EPTO..... wires were crossed at the battery.... got the ignition switch replaced and wiring repaired back to the starter. Engine will turn but not start. Given the reverse pol… read more
orcamarine
orcamarine
Proprietor
Vocational, Technical or Trade Scho
7 satisfied customers
I have a Mercury outboard 50HP motor that I am having trouble
I have a Mercury outboard 50HP motor that I am having trouble getting to start. The previous owner cut the wires to the key switch and installed a toggle switch for the starter and one for a cut-off. … read more
Greg Robinson
Greg Robinson
Senior service manager
Vocational, Technical or Trade Scho
199 satisfied customers
I have a 91 mod. 115 hp outboard yamaha boat motor that arrears
I have a 91 mod. 115 hp outboard yamaha boat motor that arrears to be in like new cond. the motor crancks over smoooth all electrical parts including choke seem to function fine but has no fire at the… read more
Larry B.
Larry B.
Marine Service Tech
High School or GED
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Meet the Experts:

Ted G.

Ted G.

Marine Mechanic

4,145 satisfied customers

40 years experience, Safe boating instruct., Failure Analysis, Expert Witness

Dominick

Dominick

Marine Mechanic

1,009 satisfied customers

25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified

John White

John White

Marine Mechanic

306 satisfied customers

11 years experience working on outboards, inboards, sterndrives & pwcs

Jason

Jason

Marine Mechanic

24,193 satisfied customers

Degree in Marine Technology. Gas and diesel marine mechanic.

Tan

Tan

MerCruiser Certified Technician

11,409 satisfied customers

40 yrs. experience with complete engine repairs both inboard/outboard and MerCruiser Certified Technician.

Jeff G.

Jeff G.

Marine Mechanic

4,730 satisfied customers

42 years experience, Certified Master Technician, All Major Outboards, Sterndrives, Hi-Performance

Noel Schembri

Noel Schembri

Marine Mechanic

3,046 satisfied customers

Advanced technical diploma

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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