Fuel System Requirements; Regulations And Guidelines; Portable Fuel Tanks; Fuel Flow Requirements - Evinrude E-Tec 40 HP Service Manual

FUEL SYSTEM

FUEL SYSTEM REQUIREMENTS

FUEL SYSTEM
REQUIREMENTS

Regulations and Guidelines

Vessel man ufacturer, and /or inst aller of an EP A
certified outboard, must meet minimum specifica-
tions for boat fuel systems established by:
U.S. Environmental Protection Agency (EPA)
•
– 40 CFR 1045.112
– 40 CFR 1060
U.S. Coast Guard (USCG)
•
– 33 CFR 183
American Boat & Yacht Council (ABYC)
•
– Standard H-24
– Standard H-25.

Fuel Flow Requirements

Fuel tank pickup tube
Fuel fittings
Fuel supply hoses
Fuel tank pickup
screen
Antisiphon valve
Remote fuel filter
Maximum fuel pump
lift height
130
15 – 30 HP
1/4 in. (6.4 mm) min. ID
5/32 in. (4.1 mm) min. ID
1/4 in. (6.4 mm) min. ID
100 mesh, 304 grade stainless steel wire, 0.0045 in. wire diameter, 1 in. (25
mm) long
2.5 in. (63.5 mm) Hg maximum pressure drop at 20 gph (76 l/hr) flow
0.4 in. Hg maximum pressure drop at 20 gph (76 l/hr) flow,
150 in. (1290 cm ) of filter area
2 2
Fuel pump should not be located more than 30 in. (76.2 cm) above bottom of
fuel tank

Portable Fuel Tanks

A
If engine is equipped with a quick-discon-
nect fuel hose, you MUST disconnect the
fuel hose from the engine and the fuel tank
to prevent fuel leaks:
•
Whenever the engine is NOT being used
•
Whenever the engine is being trailered
•
Whenever the engine is in storage.
NOTE: A small amount of fuel may be
released when the fuel connector is dison-
nected.
Store portable fuel tanks in well-ventilated
areas, away from heat sources and open
flames. Close the vent screw of the fuel
tank cap, if equipped, to prevent escape of
fuel or fuel vapors which could acciden-
tally ignite. Do not allow disconnected fuel
hoses to leak fuel.
NOTICE
Do not use portable fuel tanks for
outboards larger than 115 HP. Inadequate fuel
flow to high horsepower outboards can result
in serious powerhead damage.
40 – 90 HP
5/16 in. (7.9 mm) min. ID
1/4 in. (6.4 mm) min. ID
3/8 in. (9.5 mm) min. ID
ALL MODELS
WARNING
115 – 300 HP
3/8 in. (9.5 mm) min. ID
9/32 in. (7.1 mm) min. ID
3/8 in. (9.5 mm) min. ID