Idle speed 1993 Evinrude 115 HP

[Bob Gaunt]

Could anyone tell me what the idle speed should be on a 115 HP Evinrude, model year 1993. I just bought this pontoon boat and after a 1 hour and 40 min run the idle speed was running at 1100 rpm's. How difficult is this to adjust? How often should the plugs be changed? <br /><br />This is my first outboard engine and just want to be aware of any situation about this engine. Any suggestions would be helpful.<br /><br />Also, any info on fuel consumption and recommended rpm. Used 9 gal @ 3000 rpm for a 30 mile run today. Pontoon boat is a 24' Aqua Patio.

 

[62_Kiwi]

Re: Idle speed 1993 Evinrude 115 HP

Hi Bob, Welcome aboard. I have the same engine and the idle speed is between 600 and 700 RPM in gear.<br /><br />WOT (Wide open throttle) is between 4500 and 5500 RPM. I've never had mine over 5000 and usually I cruise at 4000.<br /><br />I'm told that adjusting the idle speed is not a simple task - but I'll leave it to the professionals to answer that one. For some reason I'm not certain whether mine idles slightly faster when hot or not.<br /><br />Fuel consumption will vary with boat size and type and mine is very different to yours, so I will pass on that one too.<br /><br />Good luck with your new boat.

 

[Bob Gaunt]

Re: Idle speed 1993 Evinrude 115 HP

Thank you, 62-Kiwi, for the information. I agree about leaving stuff to the professionals (repairs). I really don't know anything about outboards. <br /><br />My other boat is a 243 Cobalt that the dealer handles any maintenance, winterization etc.