kxr 50 90 2 Manuel atelier : Page 110

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          7. CYLINDER HEAD/VALVES
   (Mongoose/KXR 90)                                            Mongoose/KXR 90/50

                                                                               Nuts
 CYLINDER HEAD
 REMOVE
 Remove the camshaft. (Refer to the
 "camshaft remove" section in the chapter 7)
 Remove the carburetor. (Refer to the
 "CARBURETOR REMOVE" section in the
 chapter 5)
 Remove the exhaust muffler. (Refer to the
 "EXHAUST MUFFLER REMOVE"
 section in the chapter 2)
                                                                   Intake Manifold
 Remove the two nuts and then remove the
 carburetor intake manifold.

 Remove the cooling fan cover. ( 14-8)
 Remove the engine cover bolts and screws.
 Separate the engine cover joint claws.




 CYLINDER HEAD DISASSEMBLY
 Remove the valve spring cotters, retainers,   Valve Cotter   Retainer   Springs Springs Seat
 springs, spring seats, oil seals and valves
 using a valve spring compressor.
 · Be sure to compress the valve springs
      with a valve spring compressor.
    · Mark all disassembled parts to ensure
      correct reassembly.

  Special
 Valve Spring Compressor      E040
                                               Spring Compressor    Oil Seal    Valve
7-9