Yamaha 55B Owner's Manual page 74

Mixing ratio
Gasoline (Petrol)
(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)
0.04 L
Engine oil
(0.04 US qt, (0.51 US qt, (0.59 US qt, (1.01 US qt,
0.04 Imp qt) 0.42 Imp qt) 0.49 Imp qt) 0.84 Imp qt)
Mixing ratio
Gasoline (Petrol)
(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)
0.02 L
Engine oil
(0.02 US qt, (0.26 US qt, (0.30 US qt, (0.51 US qt,
0.02 Imp qt) 0.21 Imp qt) 0.24 Imp qt) 0.42 Imp qt)
Mixing ratio
Gasoline (Petrol)
(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)
0.01 L
Engine oil
(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)
NOTE:
If using a permanently installed tank, pour
the oil gradually as the fuel is being
added to the tank.
3-7
25 : 1
1 L 12 L 14 L
0.48 L 0.56 L
50 : 1
1 L 12 L 14 L
0.24 L 0.28 L
100 : 1
1 L 12 L 14 L
0.12 L 0.14 L
GB
24 L
0.96 L
24 L
0.48 L
24 L
0.24 L