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4.Cylinder head/valve
‐
Precautions for operation
General matters
●
This section covers the maintenance of cylinder heads,
valve valves, camshafts and rocker arms.
●
The maintenance of the cylinder head cannot be done while
the engine is still installed on the frame.
Specification
unit
:
mm
Item
Standard
Available limit
Compression pressure
10 ± 1 kg/cm
2
-
Camshaft
Cam height
Intake
29.810
29.440
Exhaust
29.530
29.160
Rocker
Inner diameter of rocker arm
10.000 ~ 10.015
10.100
Outer diameter of rocker shaft
9.966 ~ 9.984
9.910
Valve
Outer diameter of steam
valve stem
Intake
4.975 ~ 4.990
4.900
Exhaust
4.950 ~ 4.975
4.900
Guide bush
5.000 ~ 5.012
5.030
Clearance between valve
stem and guide sleeve
Intake
0.010 ~ 0.037
0.080
Exhaust
0.025 ~ 0.062
0.100
Valve spring free length (outer large spring)
37.000
33.500
Valve spring free length (inside small spring)
35.000
31.500
Flatness of cylinder head joint surface
-
0.050
Torque value
Cylinder head cover bolt 1.0-1.4 kgf-m
Left side bolt of cylinder head 1.0-1.4 kgf-m
Cylinder head nut 1.8-2.2 kgf-m (Threaded part and seat surface coated
with engine oil)
Timing chain automatic tensioner sealing bolt 0.8-1.2 kgf-m
Timing chain automatic tensioner bolt 1.0-1.4 kgf-m
Summary of Contents for A180
Page 2: ......
Page 12: ...ZHEJIANG KAYO MOTOR CO LTD 4 4 1 2 3...
Page 26: ...ZHEJIANG KAYO MOTOR CO LTD 1 Taillight connection cord 2 Taillight 1 2...
Page 41: ...3 3 I Inspect Note When driving in a dusty place it should be cleaned frequently...
Page 75: ...ZHEJIANG KAYO MOTOR CO LTD 8 1 8 9 Generator starting clutch 8 9 1 9 5 Crankshaft axle box 9...
Page 77: ...1 Preparation of information fault diagnosis...
Page 80: ...1 Preparation of information fault diagnosis...
Page 106: ...3 Lubrication system...
Page 108: ...3 Lubrication system...
Page 115: ...Lubrication system Install the starting gear and alternator set See Chapter 8 bolt X2...
Page 128: ...4 Cylinder head valve Do not damage the joint surface of the cylinder head...
Page 157: ...6 V belt drive system...
Page 162: ...Remove the hammer roller from the sliding drive plate Sliding drive plate Hammer roller...
Page 174: ...Use pliers to snap the spring into the groove spring Clutch block...
Page 190: ...8 Alternator Starting clutch Flywheel puller Universal fixator...
Page 213: ......