1961 Evinrude 18HP Fastwin Oil Mixture

[boatpoet]

My wife purchased a 1961 Evinrude 18HP Fastwin at a garage sale and I finally got around to see if I can get it to run. The engine seems to be in great shape (its just dirty) and I have very good spark and what appears to be good compression. Tonight I purchased a gas tank, gas, oil and a gas line but I need confirmation that the gas-oil mixture is 24:1. Can anyone confirm this for me?

 

[Glenn Romain]

Re: 1961 Evinrude 18HP Fastwin Oil Mixture

I have the 18 in the Johnny version and its 24 to 1 , Only time she smokes up a storm is in the barrel .Apart from that i dont get a heavy oil smell at all

 

[HighTrim]

Re: 1961 Evinrude 18HP Fastwin Oil Mixture

Welcome to iboats.

Anything 1960-64 18hp and up should be run at 40:1, smaller hps run at 24:1 or all motors 1958 to 1960 runs at 24:1, ore 1958 run at 20:1

 

[Vic.S]

Re: 1961 Evinrude 18HP Fastwin Oil Mixture

24:1 is the recommendation from the Evinrude FAQs website http://www.evinrude.com/en-US/Owners-Center/FAQ/OilAndFuel

The motor does however have needle roller bearings throughout and would no doubt be Ok with 40:1

 

[coolguy147]

Re: 1961 Evinrude 18HP Fastwin Oil Mixture

let me ask you guys one question. was the motor made to scavenge from a 40:1 mix?????

stick to 24:1 for that model man.

decarb every year or so.

 

[boatpoet]

Re: 1961 Evinrude 18HP Fastwin Oil Mixture

Thank you to everyone! I will set it up for 24:1 and see if she starts tonight. I am amazed at how clean this engine is and I can't wait to take it for a sip.

 

[1946Zephyr]

Re: 1961 Evinrude 18HP Fastwin Oil Mixture

Good old engines. Tougher than shoe leather and very dependable. Yea, I would stick to the 24:1 mix. That should come to 5.333 ounces of oil to the gallon.

 

[Daviet]

Re: 1961 Evinrude 18HP Fastwin Oil Mixture

You might also think about replacing the water pump before you run it to much, might save the engine.

 

[boatpoet]

Re: 1961 Evinrude 18HP Fastwin Oil Mixture

Good advise regarding the water pump. Any other words of wisdom will be appreciated. I have a manual on order so I will have that info to work form as well. Are there any typical problems I should check for beyond the water pump?

 

[Daviet]

Re: 1961 Evinrude 18HP Fastwin Oil Mixture

You might want to check/change the lower unit oil for water. If you change it, make sure to replace the gaskets on the drain and vent plugs.

 

[Vic.S]

Re: 1961 Evinrude 18HP Fastwin Oil Mixture

In fact for tips on bringing a new old outboard back into service read
Awakening a Sleeping Outboard

 

[boatpoet]

Re: 1961 Evinrude 18HP Fastwin Oil Mixture

All great information and help....thanks to all. I will be working through the list of items starting tonight. Hope all goes well!

 

[rjezuit]

Re: 1961 Evinrude 18HP Fastwin Oil Mixture

Use synthetic or synthetic blend 2 stroke oil, less smoke and less pollution. Rick

 

[Daviet]

Re: 1961 Evinrude 18HP Fastwin Oil Mixture

I sure wish my wife would by me an outboard engine instead of trying to get rid of the ones I have.

 

[HighTrim]

Re: 1961 Evinrude 18HP Fastwin Oil Mixture

I sure wish my wife would by me an outboard engine instead of trying to get rid of the ones I have.

I was thinking the EXACT same thing! I even read this to my wife to show her what Im going to trade her in for.

She doenst even like being my apprentice in the driveway, just think of all the free knowledge Im giving her, and no appreciation!