Yanmar YSE8 - Yanmar YSE Inspection: Cylinder Head

3) With
it set in the
gtoove on the
drive
shaft, insert
the impeller
into the
pump
body.
The
ddve shaft rotates counter-clockwise
when viewed
from the
pulley
side.
Be
sure the impeller
is inserted correctly.
4) Place the
pump
body cover.
5)
Attach the key and the
V
pulley,
place
the lock
washer and tighten
the
nut,
6) Bend the
lock washer.
7) Attach the
pump
assembly
to the engine
and tighten the V
belt.
Adjust the finger-depressed deflection
to 5-?
mm.
Vedfication
the
pump
assembly to the engine and
operate it
to verify that its
discharge ls
as
specified
betow:
a
YSE8
YSE 12
Eoo
lit.
/hr.
460 lit.,/hr.
Pump
shaft speed
2000 rpm
(Crankshaft
speed
3200 rpm)
Pump
shalt
speed 1900
rpm
(Crankshaft
speed
3000 rpm)
"
If operated
*ithogt
water, the rubber
impeller with
burn.
Never
operate
without
water!
8.3
CYlinder
Head
The cylinddr
head is a
gasket
type: the
valve
guides
and
the
cylindet head are
in one
piece,
and a
la4e diameter
intake
valve is used fot
$eater
suction
€fficiency.
The intake
and
exhaust
valves are of th€
totally enclosed
and supplied
lube
oil with iorcedcirculation
Iubication svstem.
Disassembled
Cylinder Head
intake/
rne-€
o6
€
intake/
o
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