Honda BF40D Manuel D'utilisation page 116

• CAMSHAFT AXIAL PLAY
1) Check that the oil pump assembly is installed properly on
the cylinder head assembly.
1
2) Loosen all the valve adjusting lock nuts and the valve
adjusting screws fully.
2
3) Put the camshaft at the top dead center of the compression
stroke of the No.1 cylinder piston (with the groove in the
camshaft toward the head cover side). Install the dial
3
indicator.
4) Check the camshaft axial play by moving the camshaft up
4
and down with a screwdriver.
5
Standard
0.03 - 0.11 mm
6
(0.001 - 0.004 in)
5) If the measurement exceeds the service limit, replace the
7
camshaft with a new one and recheck.
If the measurement still exceeds the service limit after
8
replacing the camshaft, replace the cylinder head with a
new one.
9
• CAMSHAFT RUNOUT
1) Place V blocks or equivalent under the journal at both ends
10
of the camshaft.
11
2) Install the dial indicator on the camshaft, and measure the
camshaft runout by turning the camshaft.
12
Standard
13
0.03 mm max.
(0.001 in)
14
3) If the measurement exceeds the service limit, replace the
camshaft with a new one.
15
• ROCKER SHAFT O.D.
16
Measure the rocker shaft O.D. at the sliding part of each rocker
arm.
17
Standard
13.976 - 13.994 mm
18
(0.5502 - 0.5509 in)
19
• ROCKER ARM I.D.
20 Measure the I.D. of each rocker arm.
Standard
14.010 - 14.028 mm
(0.5516 - 0.5523 in)
9-15
Service limit
0.30 mm
(0.012 in)
Service limit
0.05 mm
(0.002 in)
Service limit
13.950 mm
(0.5492 in)
Service limit
14.050 mm
(0.5531 in)
116
[1]
Groove should be
toward the head cover.