Yanmar 3JH3E - 9. Fuel Filter; 9-1 Fuel filter specifications; 9-2 Fuel filter inspection

Chapter 3 Fuel Injection
Equipment
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3_4JH3(B)(C)E
9. Fuel Filter
The fuel filter is installed between the fuel feed pump and
fuel injection pump, and removes dirt/foreign matter from
the fuel pumped from the fuel tank.
The fuel filter element must
be
changed periodiically. The
fuel pumped by the fuel feed pump goes around the ele-
ment, is
fed
through the pores
·1n
the filter and
d'1scharged
from the center of the cover. Dirt and foreign matter
in
the
fuel are deposited
in
the element.
Discharge
r----Fuel
filter bracket
0
co
..,_
>----Element
75
3-40
9-1
Fuel filter specifications
Filtering
method
filter
paper
Filtering
area
840cm'
Maximum
flow 1
.5
J1
/min
Pressure
loss
20mm
Hg
or
less
Max.
dia.
or
unfiltered particle
10
µ
9-2
Fuel filter inspection
The fuel strainer must
be
cleaned occasionally
lf
there is
water
or
foreign matter
in
the strainer bowl, disassemble
the strainer and wash with clean fuel oil to completely
remove
foreign matter. Replace the element
every
300
hours
of
operation.
Replace the filter prior to this if the filter is
very
dirty,
deformed
or
damaged.
M20
X
1.5
Make
sure
there
are
3.5
effectlve
threads
8-f6
hole
Printed in Japan
HI~SHI-H8009