Yamaha 9.9B Owner's Manual

Also see for 15B: Owner's manual

3-7ENOTE:If using a permanently installed tank, pourthe oil gradually as the fuel is beingadded to the tank.Mixing ratio100 : 1Gasoline (Petrol)Engine oil0.01 L 0.12 L 0.14 L 0.24 L(0.01 US qt, (0.13 US qt, (0.15 US qt, (0.25 US qt,0.01 Imp qt) 0.11 Imp qt) 0.12 Imp qt) 0.21 Imp qt)1 L 12 L 14 L 24 L(0.26 US gal, (3.2 US gal, (3.7 US gal, (6.3 US gal,0.22 Imp gal) 2.6 Imp gal) 3.1 Imp gal) 5.3 Imp gal)EMF40012PRE-OPERATION CHECKSwIf any item in the pre-operation check isnot working properly, have it inspectedand repaired before operating the out-board motor. Otherwise, an accidentcould occur.EMF41110Fuel8 Check to be sure you have plenty of fuelfor your trip.8 Make sure there are no fuel leaks orgasoline fumes.8 Check fuel line connections to be surethey are tight.8 Be sure the fuel tank is positioned on asecure, flat surface, and that the fuelhose is not twisted or flattened, or likelyto contact sharp objects.EMF42110Oil8 Check to be sure you have plenty of oilfor your trip.