Honda BF135A Manual page 387

• CAMSHAFT OIL CLEARANCE
1) Clean the camshaft and check the journals for wear and
damage.
2) Clean the rocker shaft holder bearings and the camshaft
holder bearings. Install the rocker shaft holders and the
camshaft on the cylinder head assembly.
3) Set a plastigauge on each journal as shown.
NOTICE
• Set a plastigauge in the axial direction on each journal.
• Do not turn the camshaft during the check.
4) Install the camshaft holder on the rocker shaft holder and
tighten the bolts to the specified torque (P. 10-35).
TORQUE:
Head cover bolt,
8 x 90 mm flange bolt,
8 x 110 mm flange bolt: 22 N . m (2.2 kgf . m, 16 lbf . ft)
6 x 20 mm flange bolt,
6 x 32 mm flange bolt: 12 N . m (1.2 kgf . m, 9 lbf . ft)
5) Remove the camshaft holder. Measure the width of the
pressed part of the plastigauge using a scale printed on the
bag of the plastigauge.
NOTICE
Measure the widest width on the plastigauge.
0.030 – 0.069 mm
No.1
(0.0012 – 0.0027 in)
0.060 – 0.099 mm
No.2 – No.5
(0.0024 – 0.0039 in)
6) If the measurement exceeds the service limit, replace the
camshaft holder, rocker shaft holder and the cylinder head
as a set. Recheck the camshaft oil clearance.
If the measurement still exceeds the service limit, replace
the camshaft.
10-14
STANDARD SERVICE LIMIT
0.15 mm
(0.006 in)
0.15 mm
(0.006 in)
[1]
PLASTIGAUGE
[1]
SCALE
[2]
PLASTIGAUGE