Suzuki VL1500B Manual page 56

Use fresh gasoline when filling up the
fuel tank. Do not use bad gasoline
which is contaminated with dirt, dust,
water or other liquid. Be careful that dirt,
dust or water does not enter the fuel
tank when refueling.
NOTE: Place the motorcycle on the side
stand to fill up the fuel tank to specified
18.0 L (4.8 US gal).
1
Fuel level
2
Filler neck
 WARNING
If you overfill the fuel tank, fuel may
overflow when it expands due to
engine heat or heating by the sun.
Fuel that overflows can catch fire.
Stop adding fuel when the fuel level
reaches the bottom of the filler neck.
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