Five hp Gamefisher air cooled motor

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May 2nd, 2015, 06:59 PM
Pat32rf

Five hp Gamefisher air cooled motor

Last fall I was given a 5hp Gamefisher air cooled outboard. It was sold by Simpson Sears. Today I dug it out and tried to find the gas/oil mix but had no luck. It is probably 20-30 years old, in very good shape but there doesn't seem to be any serial number or other details. I figure I will try 40:1 synthetic mix with high test gas unless anyone has a better idea.....
May 2nd, 2015, 07:18 PM
Tactical870

32:1and use an oil designed for air cooled engines as compared to tcwIII which is designed for the lower operating temps of liquid cooled engines.
May 3rd, 2015, 04:00 AM
rossh

I agree with tactical .
May 3rd, 2015, 05:46 AM
pinepointer

These were made for Sears by Eska using Tecumseh motors. Agree use 32:1 and hi test.
May 3rd, 2015, 07:35 AM
Pat32rf

Sounds like my 40:1 chain saw mix should be pretty close...
May 3rd, 2015, 01:03 PM
Tactical870

Quote:

Originally Posted by Pat32rf

Sounds like my 40:1 chain saw mix should be pretty close...

Should be close enough. Make sure you run premium. Also, if you need parts, I have half a dozen of these things.
May 3rd, 2015, 03:30 PM
greatwhite

According to the manual the mix rate is 20 to 1. I usually go at 30 to 1.
May 4th, 2015, 08:00 AM
Pat32rf

We always used to run everything at 20:1 when Dad was doing the mixing. Then we started to use detergent motor oils, next came outboard motor oil and things got complicated....:rolleyes:
Now it's air cooled oil in hi test gas....my old Elto wouldn't recognize a modern diet......:o
July 25th, 2020, 01:47 PM
Roe+

Quote:

Originally Posted by Pat32rf

We always used to run everything at 20:1 when Dad was doing the mixing. Then we started to use detergent motor oils, next came outboard motor oil and things got complicated....:rolleyes:
Now it's air cooled oil in hi test gas....my old Elto wouldn't recognize a modern diet......:o

My first outboard was a 1958 18 hp Evinrude electric start. It was 24:1, 1 quart of SAE 30 to 5 imp gallons of gas
July 25th, 2020, 04:32 PM
SongDog

My 1955 johnson seahorse says 20.1 on the fuel tank with 10w30 oil LOL

Always ran 91oc at 40.1 with shell 2 stroke marine oil. Oil is a lot better now a days, I dont think theres a need for any richer than 40.1 unless it really tired

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July 25th, 2020, 04:55 PM
dean.f

Quote:

Originally Posted by SongDog

My 1955 johnson seahorse says 20.1 on the fuel tank with 10w30 oil LOL

Always ran 91oc at 40.1 with shell 2 stroke marine oil. Oil is a lot better now a days, I dont think theres a need for any richer than 40.1 unless it really tired

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I have the same motor. Mines a seahorse 10 in that classic green. I converted to a single line tank but still have the original. Still runs like a champ!
July 25th, 2020, 06:18 PM
SongDog

Quote:

Originally Posted by dean.f

I have the same motor. Mines a seahorse 10 in that classic green. I converted to a single line tank but still have the original. Still runs like a champ!

Same. Mines a 5.5hp (burgundy color) original tank, motor just puts along trolling not a hiccup. I'm not even sure it's a 1955 had a few different ones and cant remember exactly.

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July 26th, 2020, 10:47 PM
sawbill

Quote:

Originally Posted by Roe+

My first outboard was a 1958 18 hp Evinrude electric start. It was 24:1, 1 quart of SAE 30 to 5 imp gallons of gas

When you were trolling it kept the flies away.