The 1998 model, 5 hp Mariner outboard requires a 50:1 ratio, three ounces of 2 cycle oil, to one gallon of fuel.
The dry weight of a 1986 model, 70 hp Yamaha outbord is 235 lbs.
50:1 mate so 100ml to every 5 liters
I have been researching this same engine tonight. I've gotten 1 reply and they say 25:1. I suppose this is because it is air cooled. Plugs are suppose to be NGK B7HS gapped at .024
The 176cc engines are about 5 hp; 160cc =3-4 hp 176 (foreign) 4-5 hp 205cc= 5-7 hp 250cc= 8 hp 350cc=11-13 hp
Advertised horsepower is-- 245 hp @ 3800RPMS.The heavy duty 454 is--- 240 HP @ 3800 RPMS.In Calif. It is 250 HP @ 3800 RPMS.
190 cc. is about 5 hp.
Real heavy.
A 5.8 hp scooter is 60 hp.
yes 5 hp
5
The flow of 5 hp motor pump is around 90 GPM.