Cylinder Head And Valve - LONCIN LC2V80FD Maintenance Manual

Chapter V Disassembly & Repair

5-2-7 Cylinder head and valve

Disassembly/assembly
Flange bolt M6 × 25
Torque: (8 ~ 12) N•m
Cylinder-head
cover
Cylinder-head
cover sealing
gasket
Spark plug
Torque: (25 ~ 30) N•m
Assembly: clean
adjust the spark plug
prior to installation.
Oil stopper
and
Cylinder-head part
Assembly:
Remove the carbon deposition in
combustion chamber and check the
touching status of valve seat prior to
installation.
Measure the pressure of cylinder
after assembly.
Flange bolt M10 × 65
Torque: (50 ~ 55) N•m
Assembly/disassembly:
Loosening and fastening of bolt must be done by
way of crossing, especially when fastening the bolt.
Each bolt must be gradually tightened evenly to the
specified torque.
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Air guide sleeve
Cylinder-head
sealing gasket
Locating pin