Honda BF40D Manuel D'utilisation page 118

• ROCKER ARM-TO-ROCKER SHAFT CLEARANCE
Standard
1
0.016 - 0.052 mm
(0.0006 - 0.0020 in)
2
3
4
5
6
7
8
• VALVE SPRING FREE LENGTH
9
Measure the valve spring free length.
10
IN/EX
11
12
13
14
15
16
• VALVE FACE/VALVE STEM O.D.
17 <Valve face>
Check each valve face for pitting or wear irregularities. Check
each valve face for even seat. Replace the valve if necessary.
18
<Valve stem>
19
1) Check each valve for bend, seizure or damage.
2) Insert each valve into the corresponding valve guide to
20
check the operation.
3) Measure the valve stem O.D. at the sliding surface of the
valve guide.
IN
EX
4) If the measurement is less than the service limit, replace
the valve with a new one.
9-16
Service limit
0.070 mm
(0.0028 in)
Standard Service limit
36.9 mm 35.4 mm
(1.45 in) (1.39 in)
Standard Service limit
5.480 - 5.490 mm 5.450 mm
(0.2157 - 0.2161 in) (0.2146 in)
5.460 - 5.470 mm 5.420 mm
(0.2150 - 0.2154 in) (0.2134 in)
[1]
VALVE FACE
118