5.INSPECTION/ADJUSTMENT
5-2
SERVICE INFORMATION
GENERAL INSTRUCTIONS
Camshaft, rocker arm shaft and rocker arm can be serviced with the
engine installed on the frame.
Camshaft lubrication oil is fed to the cylinder head through an oil
control orifice in the engine case.
Be sure this orifice is not clogged and the O-ring and dowel pins are in
place before installing the cylinder head.
During assembly, apply molybdenum disulfide grease to the camshaft
bearings, and pour clean engine oil into the cylinder head.
TORQUE VALUES
Cylinder head bolt
280-300 kgf
·
cm
Cylinder 6mm bolt
140 -180 kgf
·
cm
Cam sprocket
80-120 kgf
·
cm
SPEClFICATIONS
ITEM STANDARD
SERVICE
LIMIT
IN 32.382mm
31.25mm
below
Cam lift
EX 31.987mm
30.87mmbelow
Camshaft
Runout
0.02mm
Rocker arm I.D.
I.D.
10.000
～
10.015mm 10.015mm
above
Rocker arm shaft
O.D.
9.978
～
9.987 mm
9.978mm below
Outer 35.7
～
36.3mm 35mm
below
Free length
Inner 29.7
～
30.3mm 28mm
below
Outer
→
29.65mm 130.5
±
6.5N
→
23.45mm 330.0
±
16N
Valve
spring
Stall length
Inner
→
26.65mm 69.0
±
5.52N
→
20.45mm 236.0
±
11.8N
Valve clearance
(IN)0.06
±
0.02mm
(EX)0.10
±
0.02mm
IN 5.450
～
5.465mm 5.42mm
O.D.
EX 5.430
～
5.455mm 5.40mm
IN 5.475
～
5.485mm 5.50mm
Guide I.D.
EX 5.475
～
5.485mm 5.50mm
IN 0.010
～
0.035mm 0.08mm
Stem to guide
Clearance
EX 0.03
～
0.055mm 0.10mm
Valve
guide
Valve seat width
1.45
～
1.15mm 1.6mm
