Fuel mixture for 1998 yahaha 115 hp.

chrisf76

Recruit
Joined
Apr 26, 2009
Messages
1
does anyone know what the proper fuel mixture for a 1998 yamaha 115 hp. motor is? is it 50:1
 

kissmywake

Cadet
Joined
Apr 11, 2009
Messages
27
Re: Fuel mixture for 1998 yahaha 115 hp.

Are you sure that it's not oil injected AKA precision blend?
 

triumphrick

Lieutenant Commander
Joined
Jun 26, 2008
Messages
1,737
Re: Fuel mixture for 1998 yahaha 115 hp.

I thought only the 75 and 85 were mix um yurself motors. The rest should be oil injection....and that mixtures varies depending on rpm.
 

2MADAKAT

Petty Officer 2nd Class
Joined
May 13, 2004
Messages
143
Re: Fuel mixture for 1998 yahaha 115 hp.

I have a 1990 115HP that has a disconnected oil injection. I started mixing at a 50:1 ratio but found it smoked to much and fouled the plugs quickly. I dropped it to 40:1 and it has run fine this way for 3 years now.
 
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