Can anyone help me ???

R

rkwhitt

Cadet
Joined
Apr 12, 2010
Messages
6
I just bought a 4/hp evinrude yachtwin that is in perfect condition.
I can`t find the gas/oil ratio......I keep fouling plugs, the guy I bought it from knows nothing about it at all.the numbers I have found on it are
4136d-e02928 that was the serial # but the same # was on the powerhead not sure if one is model # cant find any thing else.
Any help would be greatly appreciated.

Thanks Rick
 
1946Zephyr

1946Zephyr

Vice Admiral
Joined
Oct 21, 2008
Messages
5,556
Re: Can anyone help me ???

I would run that at 24:1. Those Light Twins are a friction type motor and don't have ANY needle bearings in it, whatsoever. If you run it at 50:1, you may likely heat up a rod and blow it apart. Once you do that, you'll understand my signature below.:D:D..............
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tashasdaddy

tashasdaddy

Honorary Moderator Emeritus
Joined
Nov 11, 2005
Messages
51,019
Re: Can anyone help me ???

1964 everything went to 50:1, the 71 was built to run on 50:1. running 24:1, all you are doing is more pollution, smoke, wasting oil.
 
JB

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: Can anyone help me ???

I agree with TD.

OMC said 50:1, BRP now says 50:1.
 
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