Simplicity Baron Operator's Manual page 28

Fuel tank
The fuel cap (A) is located on the left side of the seat deck. To
check the fuel level or to add fuel, remove the fuel cap. Do not
overfill the tank; leave room for fuel expansion. Refer to your
engine manual for fuel recommendations. Close the cover
tightly when finished.
Never use gasoline containing METHANOL,
gasahol containing more than 10% ethanol,
gasoline additives, premium gasoline or white gas
because engine and fuel system damage could result.
B-6
A