Old Mercury 900 Outboard - Fuel Mix

[S849]

I just purchased a tri-hull with a late 1970s Mercury 900 motor. Were the outboards from that era a 50-1 fuel ratio? It purrs like a kitten and I want to be sure the next tank of fuel is mixed correctly. I have a manual ordered but I'm getting anxious to float it. <br />Thanks

 

[Clams Canino]

Re: Old Mercury 900 Outboard - Fuel Mix

Yes 50/1<br /><br />And use a good quality "ashless" TCW-3 rated oil.<br /><br />And use a can of Mercury Power Tune as directed on can for cheap insurance against stuck rings.<br /><br />-W