Yanmar YSE8 - Yanmar YSE Inspection: Cooling Water Pump

Loosen the
nipples
at
both ends of the in-
jection
pipe,
remove
the
injection
pipe,
ard
place
the speed
charge lever in LOw
position.
Loosen the
delivery
valve holder
(by
about
two
turlrs),
and
when
bubble-free
fuel comes
out,
securely
tighten t}te
delivery
valve holder,
and then,
after
attaching
the iniection
pipe,
securely
tighten
the tuel
trrmp
side
nipple.
ConJirm if tuel leak
out of the nut of
the
fuel
injectio! valve
side, ard then
tightsn
securely the nut.
2l
3)
['
+)
4.2 Cooling Water Pump.
The
YSE type
cooling water
pump,
of the
rotary tlpe, contains a rubber
impeller; it car
feed a sufficient quantity
of cooling water
to all the
parts
at high speod
as well as at low
speed.
Disaasembled
Cooling Water
Pump
l'"T'
Pump Pump
Puhp
ihp€ll€r
bcrdY
@o
'*
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