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90 hp out board mid 1980's 2 stroke. Motor will go into
90 hp Johnson out board mid 1980's 2 stroke. Motor will go into reverse but not forward. Will not go into forward gear only reverse. … read more
Jason
Jason
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Vocational, Technical or Trade Scho
18,277 satisfied customers
Afternoon I have a 90 hp 3 cylinder 2 cycle mercury it was
afternoon I have a 90 hp 3 cylinder 2 cycle mercury it was running fine we stoped to fish and motor wont fire up Has fuel we changes spark plugs still wont fire I think the CDI unit took a puke what y… read more
Jason
Jason
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Vocational, Technical or Trade Scho
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I have a 90 HP 1988 outboard that runs great with the motor
I have a 90 HP 1988 Johnson outboard that runs great with the motor cover off. When I put the cover on, the plug wires seem to short out and the motor does not run well! Please offer an opinion on thi… read more
Jason
Jason
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Vocational, Technical or Trade Scho
18,277 satisfied customers
I am going to do compression test on 1977 115 hp outboard.
I am going to do compression test on 1977 johnson 115 hp outboard. After removing spark plugs and wires should I put plugs back on wires while cranking engine to avoid stress on coils or should I do s… read more
Jeff G.
Jeff G.
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When changing a 90 HP johnson motor, do you change the controls
When changing a 90 HP johnson motor, do you change the controls also and which end do you disconnect to change the motor? the motor end or the control end?… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,399 satisfied customers
My Mercury 200 hp outboard suddenly quit while going 30 mph.
My Mercury 200 hp outboard suddenly quit while going 30 mph . I replace last weekend water filter separator outside the what could it be ?… read more
Charles
Charles
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I am the original owner of a Johnson Seahorse 9-1/2 HP outboard
I am the original owner of a Johnson Seahorse 9-1/2 HP outboard motor Model #9R-72M Serial #J3584107. It's been used only about 200 hours total. It was last used about 15 years ago and worked perfectl… read more
Jeff G.
Jeff G.
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What should the compression be coming out of the spark plug
What should the compression be coming out of the spark plug hole on a 2000 model 90 hp johnson 105.4 cu outboard engine?… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
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mercury 9.9: I bought a second hand mercury outboard 9.9 hp.
I bought a second hand mercury outboard 9.9 hp. How could i determine if it is a 2 stroke or a 4 stroke?… read more
Noel Schembri
Noel Schembri
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Diploma
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Could a colder heat range spark plug affect the idle on my
Could a colder heat range spark plug affect the idle on my 115 HP Johnson 2 cycle outboard? Heat range 8 was specified. HR 7 is installed.… read more
Jason
Jason
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Vocational, Technical or Trade Scho
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I just purchased a used boat powered by a 90 hp Johnson V4
I just purchased a used boat powered by a 90 hp Johnson V4 VRO outboard. It has a reservoir for the oil, seperate from the gas tank, so that gas and oil are mixed without the necessity of actually mix… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
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I have a 40 hp 1976 evinrude outboard motor, model 40655a.
I have a 40 hp 1976 evinrude outboard motor, model 40655a. The correct spark plug is a champion L4J, and is no longer made.L4J in a coversion chart comes up RL82C. When you search by motor size UL81C … read more
Jeff G.
Jeff G.
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Vocational, Technical or Trade Scho
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Hi im french and ive a problem with my 35 hp johnson (evinrude)
Hi i'm french and i've a problem with my 35 hp johnson (evinrude) outboard with the connection between the power head wiring plug and the ingnition's key wiring plug. Because when these two wires are … read more
Captain Dave
Captain Dave
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Master's Degree
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Need to know if Outboard Motor, 15 HP, model J15EENM, sn
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tom
tom
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High School or GED
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I own a 1986 90 hp Johnson outboard motor. Can you tell me
I own a 1986 90 hp Johnson outboard motor. Can you tell me the spark plug gap and what kind of gas consumption the motor might use. It is on an 18ft aluminum Lady Fisher SV18GT boat. I am also trying … read more
Steve Sr.
Steve Sr.
No Title
High School or GED
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I need the point setting and spark plug gap for a 1953 Johnson
I need the point setting and spark plug gap for a 1953 Johnson 10 horse 2 cycle outboard motor?… read more
Jason Forsberg
Jason Forsberg
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Vocational, Technical or Trade Scho
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I have a 1991 200 HP Johnson Outboard motor. The engine will
I have a 1991 200 HP Johnson Outboard motor. The engine will start but will die as soon as I put it in gear. Checked compression and spark and is fine. When idling, seems real smoky like it is getting… read more
Captain Dave
Captain Dave
Marine Mechanic
Master's Degree
2,672 satisfied customers
I have a 22Ft. Odyssey 2000 pontoon boat, Equipped with a ...
I have a 22Ft. Odyssey 2000 pontoon boat, Equipped with a year 2000 Johnson 50 HP Outboard (J50PLSSM). I am about to replace this motor with an Evinrude 90 HP. However it seems to me, that the rear en… read more
Scott
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Meet the Experts:

Dominick

Dominick

Marine Mechanic

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

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Ted G.

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John White

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Jason

Jason

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Degree in Marine Technology. Gas and diesel marine mechanic.

Tan

Tan

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Jeff G.

Jeff G.

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Captain Dave

Captain Dave

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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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