Honda BF40D Manuel D'utilisation page 186

• 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
1
bore.
2
Standard
18.002 - 18.008 mm
3
(0.7087 - 0.7090 in)
4
• PISTON PIN-TO-PIN BORE CLEARANCE
5
Standard
0.002 - 0.014 mm
6
(0.0001 - 0.0006 in)
7
8
• CONNECTING ROD SMALL END I.D.
9
Measure the I.D. of the connecting rod small end.
10
Standard
18.016 - 18.034 mm
11
(0.7093 - 0.7100 in)
12
13
14
15
16
17
• CONNECTING ROD BIG END AXIAL CLEARANCE
Measure the axial clearance at each connecting rod big end.
18
Standard
19
0.05 - 0.20 mm
(0.002 - 0.008 in)
20
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.
10-12
Service limit
18.021 mm
(0.7095 in)
Service limit
0.040 mm
(0.0016 in)
Service limit
18.050 mm
(0.7106 in)
Service limit
0.30 mm
(0.012 in)
186