ENGINE MECHANICAL 6A–111
Cylinder Bore Measurement
If the marking is not clear, measure the cylinder bore
inside diameter.
• Use a cylinder bore dial indicator to measure the
cylinder bore in the thrust and axial direction of the
crankshaft.
Measuring points: 20 mm (0.79 in)
110 mm (4.33 in)
190 mm (7.18 in)
Lower Crankcase
Visually inspect the lower crankcase for cracking and
damage.
If possible, use dye penetrant flaw detector.
Oil Jet
Check the oil port on the oil jet for clogging.
Cylinder Liner Projection
• Use a dial indicator or a straight edge and feeler
gauge to measure the cylinder liner projection.
Cylinder liner projection
Standard: 0.06 – 0.10 mm (0.0024 – 0.0039 in.)
The difference in the cylinder liner projection height
between any adjacent cylinders must not exceed
the limit.
Projection height between adjacent cylinders:
0.03 mm (0.0012 in.) or less
012EY00034
012EY00038
012EY00039
012EY00045
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