Yamaha 13.5A Owner's Manual page 64

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8 Avoid using any oil other than the des-
ignated type.
8 Use a thoroughly blended fuel-oil mix-
ture.
8 If the mixture is not thoroughly blend-
ed, or if the mixing ratio is incorrect,
the following problems could occur:
8 Low oil ratio: Lack of oil could cause
major engine trouble, such as piston
seizure.
8 High oil ratio: Too much oil could
cause fouled spark plugs, smoky
exhaust, and heavy carbon deposits.
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.
3-6
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
0.48 L
24 L
0.24 L