Yanmar BY series Dokumentacja Pobierz pdf (Strona 46)

BEFORE YOU OPERATE

BY Series Operation Manual 39

DIESEL FUEL

Diesel Fuel Specifications

Diesel fuel should comply with the

following specifications. The table lists

several specifications for diesel fuels.

Additional Technical Fuel

Requirements

• The fuel cetane number should be equal

to 48 or higher.

• The sulfur content must not exceed 0.3%

by volume. Less than 0.05% is preferred.

• Water and sediment in the fuel should

not exceed 0.05% by volume.

• Ash content not to exceed 0.01% by

mass.

• Carbon residue content not to exceed

0.35% by volume. Less than 0.1% is

preferred.

• Total aromatics content should not

exceed 35% by volume. Less than 30%

is preferred.

• PAH (polycyclic aromatic hydrocarbons)

content should be below 10% by volume.

• NEVER mix kerosene, used engine oil,

or residual fuels with the diesel fuel.

• NEVER use Biocide or mix winter and

summer fuels.

• Keep the fuel tank and fuel-handling

equipment clean at all times.

• Poor quality fuel can reduce engine

performance and / or cause engine

damage.

• Fuel additives are not recommended.

Some fuel additives may cause poor

engine performance. See your

authorized Yanmar marine dealer or

distributor for more information.

Diesel Fuel Lines

Figure 1

1 – Optional Boat Builder-Installed

Fuel Filter / Water Separator (30

micron Pre-Filter)

2 – To Fuel Feed Pump

3 – Less Than 500 mm (19.68 in.)

4 – Fuel Return Line

5 – Fuel Tank

6 – Fuel Tank Drain Cock

7 – 20 - 30 mm (0.75 - 1.125 in.)

8 – Fuel Shutoff Valve

Shown is a typical installation of a boat fuel

system. Fuel supply (Figure 1, (2)) and

return (Figure 1, (4)) lines connect to

fittings at the engine.

DIESEL FUEL

SPECIFICATION

LOCATION

No. 2-D, No. 1-D,

ASTM D975-94

USA

EN590:96 European Union

0003638

(2)

(1) (4)

(6)

(8)

(5)

(7)

(3)

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