S.
1
ENGINE
BODY
92.4mm
STROKE
SERIES
WSM.
01092
$o_mpression ring
I
(When removing) (When installing)
Factory 0.30 to 0.45
mm
spec.
0.01 18 to 0.01 77 in.
0087F066
Factory
spec.
Allowable
limit
Oil ring
[A]
Top ring (key stone type)
0.25 to 0.45
mm
0,0098 to0.0177 in
1.25
mm
0.0492 in.
0197F002
2nd
ring
Oil
ring
Factory spec.
161
2nd and oil ring
0
093 to 0.12 mm
0.0037
top 0.0047 in
0.020
to
0.052
mm
0.00079 to 0.0020 in.
0321
F2
11
2nd
ring
Replacing Connecting Rod Small End Bushing
(When removing)
1.
Press out the small end bushing with
a
connecting
(When installing)
1.
Clean
a
new small end bushing and bore, and,
apply engine oil to them.
2.
Press fit
a
new bushing, taking due care to
see
that
the
connecting rod hole matches the bushing hole.
rod small end bushing replacing tool.
O2mm
0.0079 in.
Piston Ring Gap
1.
Insert
the
piston ring into
the
lower part
of
the
2.
Measure the ring gap with
a
feeler gauge.
3.
If
the
gap exceeds the allowable limit, replace the
liner (the
least
worn out part) with the piston.
ring.
Allowable limit
[Bl
I
I
0.15
rnm
Oil ring 0.0059 in.
I
'IL
1.25mm
I
;$yble
1
0.0492in.
Clearance between Piston Ring and Groove
1.
Remove carbon from the ring grooves.
2.
Measure
the
clearance between
the
ring and the
groove with a feeler gauge or depth gauge.
3.
If
the
clearance exceeds allowable limit, replace
the
ring since compression leak and oil shortage
result.
4.
If
the
clearance
still
exceeds
the
allowable limit
after replacing
the
ring, replace
the
piston.
I
1
More than
0.2
mm
0.079 in.
Factory specification:
A
5-87
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