Honda CB125 CB160 (1972) [19/139] Caution

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3 2 CYLINDER HEAD AND CYLINDER I Disassembly Caution required during disassembly and assembly a The work area should be arranged orderly and the following items should be prepared One set of general standard tools One set of CB 125 and 160 special tools Cleaning solvent gasoline and oil Measuring instruments Gaskets and packing for the particular engine b Disassembly should be performed in a systematic Fig 3 13 Cylinder head cover nuts and bolts manner c A complete vehicle inspection must be made 1 Remove the cylinder head cover Refer to Fig 3 13 2 Remove the generator cover CAUTION In the 6X18 x point screw for securing the generator cover a 5 5X1 50 ring is inserted If the ring is not used oil leakage results 3 By turning the A C generator rotor locate the cam chain joint and remove it near top dead center Refer to Fig 3 14 If a thin string or wire is attached to the cam chain at this time later operation becomes easier 4 By removing the cam chain the cylinder head can be removed from the stud bolts Refer to Fig 3 15 5 The spark plug should be disconnected from the the high tension terminal Fig 3 15 Removing cylinder head CAUTION a After removal bf the cylinder head the gasket surface should be inspected b Carbon in the combusion chamber should be reined Refer to Fig 3 16 c Usually gaskets and packing are used only once When disassembled they should be thoroughly inspected if any scar is found repla cement should be made Fig 3 16 Removing carbon 13

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