Info needed on o/b

rkwhitt

Cadet
Joined
Apr 12, 2010
Messages
6
I have a 4/hp yachtwin 4136d........year? need to know oil mixture, spark plugs
any help would be greatly appreciated.
 

BigB9000

Lieutenant Junior Grade
Joined
Dec 5, 2007
Messages
1,154
Re: Info needed on o/b

4136 4hp 1971

50:1 oil

Champion j6j
AC m44c.

"WE RECOMMEND CHAMPION AND AC SPARK PLUGS" -BRP
 

rkwhitt

Cadet
Joined
Apr 12, 2010
Messages
6
Re: Info needed on o/b

Thanks for the info......will this motor push a 11` zodiac ? mainly on lakes.
 

rkwhitt

Cadet
Joined
Apr 12, 2010
Messages
6
Re: Info needed on o/b

Yes I just got it and ready to hit the lake, need to change plugs and put good gas in it......new water pump ? I will change that out to.
 

Vic.S

Rear Admiral
Joined
May 4, 2004
Messages
4,690
Re: Info needed on o/b

The currently recommended plugs are Champion J6C gapped at 0.030"
The modern equivalents of J6J

50:1 is 2.56 fluid ounces per US gallon
( 3.2 fluid ounces per UK , Imperial, gallon

or 20mls per litre anywhere other than the USA
 
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