Johnson 15 hp outboard fuel mixture

By no means perfect but a good general rule. 501 - Mix 100ml of oil per 5ltrs of fuel.

Early on for.

Johnson 15 hp outboard fuel mixture. Fueloil ratio for Johnson 15 hp The purpose of oil is to lubricate the engine-The burning of the oil is just an unfortunate happening in the engine——It is the nature of a 2 stroke that some fuel and oil go thru the engine without being compressed in the cylinder—-That is what you see coming out the exhaust especially an engine. Mixing ratio for Johnson 15 hp outboard. 160z oil to 6 gal of gas.

Make sure the oil is TCW-3 rated. Better check it out with a local outboard service centre when I looked further many mixes are between 40 to 1 or 50 to 1 as well petrol unleaded 87. The 15 hp is shown as a fourstroke so be safe do it rightyou need a reliable engine.

Please note that some Johnson and Evinrude Owners Manuals mention 1001 mixture ratio after the motor is completely broken in but most experts suggest against doing that. Stick with 501 for the 1964 and newer motors. Models that have working VRO Pumps Variable Ratio Oilers do not require oil to be mixed with fuel.

The pump is doing the mixing. Your question was - What is the ratio of oil to gas in a 15 horse Johnson outboard motor. Answer - I would be happy to help you with that.

That depends on the actual year of your engine. You said you bought it in the 60s. 1958 and prior used 201 as a ratio 1959 thru 1963 used 241 1964 and newer use 501.

What is the Fuel-to-Oil mixture. Any Johnson outboard motor built since 1964 requires a 501 fuel ratio. Motors built prior to that date require a 321 ratio with the exception of a few fishing motors built prior to 1955 that use a 161 ratio.

Johnson outboard motors are two-cycle engines. These engines use a fuel and oil mix to provide lubrication. In 1966 Johnson modified the 18hp a bit to make up its horsepower.

Another note if it is an Evinrude Fastwin AND says 15 hp on it its a 53-56. Johnson and Evinrude totally combined their product line in 1956 and the 15hp was available in the Johnson marquee as well. If all else Fails.

The Fallback fuel mix. If all else fails and youre absolutely stuck we recommend a mix of 501 for outboards older than 1980 and 1001 for outboards manufactured since 1980. That is 50 parts fuel to 1 part oil and 100 parts fuel to 1 part oil respectively.

By no means perfect but a good general rule. How to mix 2 stroke fuel. Fuel mix for old Johnson.

Discussion in Outboards started by crispy1960 Aug 28 2010. Page 1 of 2 1 2 Next Joined. Other brands that had specs of 10-151 etc due to non roller big and small ends are a different story.

Powering a slippery cat with 20 hp. Fuel injected or carb. Russell Brown Feb 15 2020.

All 15 hp motors for both Johnson and Evinrude were called 15hp. The piston diameter for both the 99 and 15 hp motors from 1974 to 1992 are 2188 with a stroke length of 1760 which equals 132 cubic inches or 216 cubic centimeters. Full power operating RPM for the 99 is 4500 -.

Johnson 15 Hp Repair Manual. 1978 15 hp mariner engine manual 1979 15 hp mercury outboard fuel mixture 1980 evenrude 15 hp 4 stroke engine overheats 1981 long shaft 15 hp evenrude motor manual 1982 mercury 15 hp carb manual 1983 mercury 15 hp low oil shut off 1997 15 hp evenrude dies at slow speeds 1984 suzuki 15 hp four stroke free wiring. Evinrude Johnson Semi Synthetic Outboard Oil Com.

Outboard 100 1 Pre Mix Synthetic 2 Stroke Oil Ato Amsoil. 1957 Johnson Mile Master 6 U S Gallons Fuel Tank Decal Set Garzonstudio Com. Johnson And Evinrude Raise Horsepower To 90 Mercury S 100 Is Still Leader Race Resumes In Outboard Motor Field New Models Abound The York Times.

When you adjust the gas intake and speed of a Johnson outboard motor youre accomplishing two tasks in one. Youre setting the motors low speed its idle speed and youre adjusting the mixture so that the motor performs at its optimum efficiency at both high and low speeds without sputtering or coughing. Adjusting the fuel mixture on your Johnson outboard is a fairly easy process to do.

Items you will need. Start the Johnson outboard motor. Let it idle for a few minutes to warm up.

Remove the engine cowling as per the instructions in your Johnson outboard motor owners manual. When doing this. So I just got a great deal on my first boat- a 64 14ft starcraft with 1960 18 hp johnson seahorse trailer and trolling motor for 500.

I drained the gas and was unsure of the fuel oil ratio. Several websites and other owners say 241. Some guys say that the oil today is much better than the oil in 1960s and that I should run it at 401 or 501.

The official OMC fueloil mix for most outboard motors in this year ranges has for years been 501. This means 50 parts of regular gasoline to 1 part of outboard motor oil. Remember that this was before unleaded gasoline or even possibly an octane rating that was listed at the pumps.

Now the recommended fuel is 87 octane gasoline. Early on for. Your Johnson Evinrude model number is the key to finding the correct parts for your outboard motor.

Model numbers are usually found on an ID tag on the mounting bracket. The model number will also help determine the model year of your motor. See our model number guides for help.

501 - Mix 100ml of oil per 5ltrs of fuel. Recommended by Mercury Mariner Tohatsu Johnson and Evinrude this is my preferred ratio for all outboards including Yamaha and Suzuki. You can confidently use this ratio for any horse power and just about all year models.

Variation Style HP Design Features Shaft Year Suffix. A Australia B Belgium C Canada J Johnson H Hong Kong S South America T Tracker Model V Boat Builder. J Johnson E Evinrude Commercial V Quiet Rider.

12 2 23 25 3 33 4 45 5 6 75 8 99 14 15 20 25 28 30 35 40 48 50 55 60 70 75 85. Evinrude outboard motors made since 1964 require a 50 to 1 fuel to oil mixture using 6 gallons of gas per 1 pint of oil. Motors made prior to 1964 take a 24 to 1 mixture.

The most common mixture for motors made prior to 1955 was 16 to 1. Evinrude was founded by Ole Evinrude in Milwaukee Wisconsin in 1907. Evinrude filed for bankruptcy in 2000.

Johnson 1315 HP Outboard Manuals return to top Year Model 1928 P-40 Johnson 133 HP Outboard Manuals return to top Year Model 1930-32 SA-50 SE-50 1933 S-65 1934 S-70 Johnson 15 HP Outboard Manuals return to top. 2019 Evinrude 3 5 Hp E3rg4 Outboard Motor. Evinrude Johnson Gasoline 6 U S Gallons Gas Tank Decal Garzonstudio Com.

1974 Evinrude 25 Hp Outboard 2 Stroke With Tank. 1952 1954 Evinrude 3 Hp Owners Manual Outboard Boat Motor Repair. Two stroke outboard fuel mix ratio manuals net evinrude johnson semi synthetic outboard oil com evinrude g2 boating.

I have a couple of 1950s outboards. In their day they ran 241 oil to gas. One quart 30 weight automotive oil to 6 gallons of gas.

Of lot of blue smoke and pollution. Ive had two outboard mechanics tell me that with the development of dedicated 2 stroke oil with TCW3 as a standard I could safely run at 401. Fuel consumption Chart - Yamaha Outboard - Mercury Outboard - Evinrude - Honda Outboard - Suzuki Outboard - Johnson - Outboards MerCruiser - Volvo Penta Diesel Inboards GPH MPG LPH KPL.

99 hp - 15 hp - 20 hp - 25 hp - 40 hp - 50 hp - 60 hp - 75 hp - 90 hp - 115 hp - 135 hp - 140 hp - 175 hp - 190 hp - 200 hp - 220 hp - 225 hp - 250 hp.