Honda BF40D - Page 186

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• PISTON PIN BORE I.D.
Measure the I.D. of the two piston pin bores, and take the
maximum reading to determine the I.D. of each piston pin
bore.
• CONNECTING ROD BIG END AXIAL CLEARANCE
Measure the axial clearance at each connecting rod big end.
Standard Service limit
18.002
- 18.008 mm 18.021 mm
(0.7087
- 0.7090 in) (0.7095 in)
Standard Service limit
0.002
- 0.014 mm 0.040 mm
(0.0001
- 0.0006 in) (0.0016 in)
• PISTON PIN-TO-PIN BORE CLEARANCE
Standard Service limit
18.016
- 18.034 mm 18.050 mm
(0.7093
- 0.7100 in) (0.7106 in)
• CONNECTING ROD SMALL END I.D.
Measure the I.D. of the connecting rod small end.
Standard Service limit
0.05
- 0.20 mm 0.30 mm
(0.002
- 0.008 in) (0.012 in)
If the measurement exceeds the service limit, replace the
connecting rod and the connecting rod cap with new ones as a
set, and recheck.
If the measurement still exceeds the service limit after
replacing the connecting rod and the connecting rod cap,
replace the crankshaft with a new one.
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