90hp 2 stroke oil/fuel ratio

Slixter

Recruit
Joined
Jan 20, 2009
Messages
2
Please confirm the correct oil/fuel ratio for a 2000 Yamaha 90hp 2 stroke.
The motor does not have an oil resevoir, it requires the fuel to be pre-mixed.
 
D

DJ

Guest
Re: 90hp 2 stroke oil/fuel ratio

50:1

One pint TCW-3 outboard oil to six gallons of 87 octane.
 

Slixter

Recruit
Joined
Jan 20, 2009
Messages
2
Re: 90hp 2 stroke oil/fuel ratio

Thanks DJ, but now I'm confused. Since I posted the question I found my original manual and paperwork. The manual only says 50:1 during breakin or after a long storage. My salesperson wrote down 25:1. I've been using a measuring bottle at 24:1 for as long as I can remember. Could that be why I have so much soot in the prop exhaust? Otherwise the engine has been running great. Carb's were cleaned two months ago even though they were practically spotless.
 
Top