Yamaha 4AC Owner's Manual page 22

Operation
1. Engine oil
2. Gasoline
2. Replace the fuel tank cap and close tight-
ly.
3. Shake the fuel tank to mix the fuel thor-
oughly.
4. Make sure that the oil and gasoline are
mixed.
If equipped with a built-in fuel tank
1. Pour oil into a clean fuel can, and then
add gasoline.
17
1. Engine oil
2. Gasoline
2. Replace the fuel can cap and close tight-
ly.
3. Shake the fuel can to mix the fuel thor-
oughly.
4. Make sure that the oil and gasoline are
mixed.
5. Pour the gasoline and oil mixture into the
built-in fuel tank.
ECM00810
CAUTION:
Avoid using any oil other than the spec-
G
ified type.
Use a thoroughly blended fuel-oil mix-
G
ture.
If the mixture is not thoroughly mixed, or
G
if the mixing ratio is incorrect, the fol-
lowing problems could occur. Low oil
ratio: Lack of oil could cause major en-
gine trouble, such as piston seizure.