Engine Mechanical: 1D-42
Cylinder Bore
Inspect the cylinder wall for any scratches, nicks or other
damage. If any defects are found, replace the cylinder
with a new one.
Measure the cylinder bore diameter at six places.
Special tool
(A): 09900–20530 (Cylinder gauge set)
Cylinder bore
Standard: 104.000 – 104.015 mm (4.0945 – 4.0951 in)
Piston-to-cylinder Clearance
Refer to “Piston and Piston Ring Inspection (Page 1D-
43)”.
Piston Ring Removal and Installation
B831G21406031
Removal
1) Draw out the piston pin and remove the piston. Refer
to “Engine Top Side Disassembly (Page 1D-17)”.
2) Carefully spread the ring opening with your thumbs
and then push up the opposite side of the 1st ring to
remove it.
NOTE
Do not expand the piston ring excessively
since it is apt to be broken down.
3) Remove the 2nd ring and oil ring in the same
manner.
Installation
NOTE
• When installing the piston ring, be careful
not to damage the piston.
• Do not expand the piston ring excessively
since it is apt to be broken down.
1) Install the piston rings in the order of the oil ring,
second ring and top ring.
a) The first member to go into the oil ring groove is
a spacer (1).
After placing the spacer, fit the two side rails (2).
CAUTION
!
When installing the spacer, be careful so that
the both edges are not overlapped.
(A)
I831G1140177-01
I718H1140141-01
I831G1140178-01
“A”: INCORRECT “B”: CORRECT
1
2
2
I718H1140143-02
A
B
“A”
“B”
I705H1140170-02
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