2007 Johnson 2 HP 4-Stroke Service Manual, Page 169Get this manual

2007 Johnson 2 HP 4-Stroke Service Manual, Page 169

Gasoline Handle With Care!
Gasoline vapor and air mixtures explode easily and violently when mixed as shown1 Part Gasoline 20 Parts Air When you smell ANY odor of gasoline, explosion is possibleGas Fumes If the air around you is calm, the pilot light in the heater could ignite the heavy fumes before your nose ever smells the fumes
By Volume

Gasoline fumes are heavy and will sink to the lowest point in the boat or room and will STAY there, WAITING
What can you do?