Evinrude B4R4 Operator's Manual page 22

22 ENGINE OPERATION
WARNING
!
When opening fuel tank cap, be sure to
follow the procedure described below.
Fuel could blast out through the fuel
tank cap in case the cap is loosened by
using another procedure when internal
pressure of fuel tank is raised by heat
from sources such as engine or sun
light.
Except for USA and Canada model
① When using integral tank
Before opening fuel tank cap,
tur n air vent screw two times
counterclockwise to release air
6
pressure in the fuel tank.
Two turns the
air vent screw
When using separate tank
Full open the air vent screw on
the tank cap and release internal
pressure.
Full open the Air
vent screw
② O pen the fuel tank cap slowly.
③ When using integral tank
Remove top cowl and fill the fuel
not to over the full mark.
When using separate tank
Fill the fuel carefully not to over
flow.
④ A fter filling the tank, close the tank
cap.
Full mark