Yanmar YSE8 - Piston and Connecting Rod Assembly

wear on valve
guides
and
valves.
Rene\!
cylinder head
or
valye if
worn.
YSE8
YSEl2
Intake 104211
-11100
104511
-11100
Exhaust
valve
104211
-11110
104511
-
11110
Cylindei
heacl
to42tL
-11010
104507
-11010
Reassembly
.
lnsert tll intake
and
exhaust
valves into the
cylinder
head,
and
secure
each
valve spring
Jnt+
,
sr.op
witli'isparner
placcd
upon lhc
valvP spring holder'
Check and
renew
(if necessaiy) the
gasket.
Cla.rnp
the cylinder
head
evenly
in the
diagonal
direction.
rC
I
2l
Cylinder
head
lock
nut tightening
torque
YSES
YSET2
Tightening torque
8.8
\2.4
Piston and
Connecting
Rod
Assembly
ital
at its
smaller end
and crankpin
metal at
its lalger
end.
The
piston
rings
are
com-
posed of three
pressure rings and
one oil ring.
Piston
and Coinecting
Rod
Assembly
As
Disassembled
Connecting
rod lock
nut tightening
torque.
r*8ton
of hidr silicon
featuring
a
low expansion
coeflicient
and
outstanding
resistance
jaw
road ii
ouar shaped
externally.
The starnp
forged
connecting
rod
has
piston
pin
ra
Connect nq ro.l ass--mb
y
kc-or
YSE
8
YSE 12
Iightening torque 3
26