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I have a Johnson 6 seahorse, Modle #6R-73S, Serial # J3740818. what is the fuel to oil ratio?

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: Is there a neutral switch on a johnson 4 hp

If it is like my Evenrude 4hp 'light twin' the answer is no. These motors are nick named 'pull and go'. Before you start the motor besure to get the boat pointed in the direction you want to go.

Posted on Aug 07, 2009

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SOURCE: need owners manual for 1956 Johnson Seahorse 15hp

In order to solve the problem I needed to completly break down and diagram the entire motor. Not easy, but it worked. I started with the fuel system and made my way through till I had the motor broke all the way down to the pistons, and rebuilt it after making a diagram of every working and cast part. This included makeing note of part numbers and along with size, shape, and where the parts fit in aspect to the entire motor. In order to do any of this yourself mechanicale dtrafting paper will be needed and a lot of time.

Posted on Oct 25, 2009

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SOURCE: i need to change a water pump on a johnson 6hp

unbolt lower unit and you will be right there . shift rods vary so check where it is and how to unhook.

Posted on Apr 25, 2010

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SOURCE: 35hpjohnson seahorse

You may have this posted in the wrong product category. Please select another category appropriate to the problem and re-post the problem so the correct expert will see and respond to the question..

Posted on Sep 04, 2012

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SOURCE: 1981 70 hp Johnson seahorse outboard motor oil mix ratio please

50:1 Ratio One pint of 2 cycle oil to six gallons of fuel.

Posted on Dec 28, 2014

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I have a 40 s Johnson seahorse td20 with serial number 63191 , and I was wondering what year model is it? I gave 280.00 for it, did get a good deal ??

the serial number is not consistent with johnson serial numbers as all have 2 letters followed at the end by 2 numbers which indicates the year of manufacturer 9 ( ft17598 indicates it was mahe in 98)
There are pages on the net explaining when a serial number is used but it must be old as johnsons have used model numbers for identification since 1960's
probably better if you take it to a johnson service dealer as they may have the johnson factor list for serial numbers as you will have to identify it to get parts
go google and type in manufacture date of 40s johnson td 20 outboard serial number 63191
if that shows no results just cahange some words in the search

Jan 07, 2016 | Boating

1 Answer

1981 70 hp Johnson seahorse outboard motor oil mix ratio please

50:1 Ratio One pint of 2 cycle oil to six gallons of fuel.

Dec 28, 2014 | Boating

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Evinrude outboards

Johnson and Evinrude carbureted 2-stroke outboards since 1964 require a 50:1 fuel to oil mixture (2%) on engines without an automatic oiling system - 6 gallons of gas to 1 pint of outboard oil.

Aug 30, 2014 | Garden

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What is the oil to gas ratio in my 4 horse Evinrude< Model # E4BRHCOB Ser # B101702

50:1 since the late 60's
Too much oil will gum up the rings, smoke too much and foul plugs. Use ONLY major outboard manufacturers oil, Mercury, Yamaha, Johnson/Evinrude TCW-3. They work the best, and no alcohol fuel.

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Evinrude serial numbers 18902bc 53303

It looks like you have an old one....?

model # and serial # are on the mounting bracket, port side.
1980 and later, the model number will start with "J25" followed by 5 or 6 characters. there might be another letter in front of the "J".

1956 to 1980, most model #'s begin with the horsepower, before that, it's more random.

Commercial, military and racing versions each have their own model # sequence.

May 18, 2014 | Boating

1 Answer

Johnson serial numbers

if you have no plate on the transom clamp then some had a core plug on the side of engine , or take a picture of engine and send it to a dealer to age it !

Dec 16, 2013 | Boating

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Johnson seahorse 6 hp

Check to see that you have proper air flow through the cowlling. It sounds like it's not getting enough air to the breather.

Dec 05, 2013 | Boating

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Johnson Seahorse Manual 80 hp

depends on the age of the motor.OLD was 25 to 1 newer is 25 to 1 .

Jun 12, 2013 | Boating

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