Fuel/oil mixture says 100/1?

jackhartjr

Cadet
Joined
Jun 28, 2004
Messages
15
Hi folks, my new to me 85' Evinrude 9.9HP has a little sticker next to the fuel intake line that says 100/1. Should I use that mixture or use the 50/1 I see everyone else talking about?
I had read in this forum about that 100/1, then I see mine has it!
Thanks in advance!
Jack Hart
Hickory, NC
 

Joe Reeves

Supreme Mariner
Joined
Feb 24, 2002
Messages
13,262
Re: Fuel/oil mixture says 100/1?

The 100/1 mixtue was a mistake that resulted in many blown powerheads. Use the 50/1 mixture.
 

DHPMARINE

Captain
Joined
Dec 16, 2003
Messages
3,688
Re: Fuel/oil mixture says 100/1?

I've got a few customers still running 100:1,because all they do is troll,and 50:1 causes fouling.But they are running 8HP and less.

OMC stated 100:1 was fine for operating,but NOT for letting the engine stay dormant (not enough oil on the bearings/pistons/rings.)

But if I had your 9.9,and used it hard,it would be at 50:1.

DHP
 

jackhartjr

Cadet
Joined
Jun 28, 2004
Messages
15
Re: Fuel/oil mixture says 100/1?

Thanks a ton folks, I thought as much, wanted to ask some pros!
Jack
 
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