1992 Yamaha 20 HP Oil mix Ratio

J

JohnAB

Seaman Apprentice
Joined
Apr 13, 2004
Messages
30
Hello,

Can anyone tell me what the correct oil/gas ratio is for the above mentioned motor? Is it 50:1 or 100:1 as I know some Yamaha's were 100:1.
 
deejaycee_2000

deejaycee_2000

Captain
Joined
Mar 28, 2006
Messages
3,447
Re: 1992 Yamaha 20 HP Oil mix Ratio

Even the older motors that have 100:1 printed on the side of the cowling should be run with 50:1 ..... always 50:1 ......
 
JUSTINTIME

JUSTINTIME

Captain
Joined
Sep 2, 2006
Messages
3,284
Re: 1992 Yamaha 20 HP Oil mix Ratio

they put more additives in the gas
remember MTBE
at idle 100/1 is fine but WOT u need 50/1
that is how most injected motors work today
 
R

rajabatis

Seaman
Joined
Dec 29, 2006
Messages
53
Re: 1992 Yamaha 20 HP Oil mix Ratio

JUSTINTIME said:
they put more additives in the gas
remember MTBE
at idle 100/1 is fine but WOT u need 50/1
that is how most injected motors work today
Click to expand...
Wouldn't additives help and be a good thing though? What are the additives anyway?
 
You must log in or register to reply here.
Top