people 125 Werkstatthandbuch : Seite 74

          7. CYLINDER HEAD/VALVES                                                          PEOPLE 125/150

 SERVICE INFORMATION
 GENERAL INSTRUCTIONS

 · The cylinder head can be serviced with the engine installed in the frame.
 · When assembling, apply molybdenum disulfide grease or engine oil to the valve guide movable
   parts, valve arm and camshaft sliding surface for initial lubrication.
 · The camshaft is lubricated by engine oil through the cylinder head engine oil passages. Clean the
   oil passages before assembling the cylinder head.
 · After disassembly, clean the removed parts and dry them with compressed air before inspection.
 · After removal, mark and arrange the removed parts in order.         When assembling, install them in
   the reverse order of removal.

 SPECIFICATIONS

                                               Standard (mm)                  Service Limit (mm)
                    Item
                                            125cc             150cc          125cc           150cc
                               IN            0.10              0.10
 Valve clearance (cold)
                               EX            0.10              0.10
 Cylinder head compression pressure      13 (kg/cm)         15 (kg/cm)

 Cylinder head warpage
                               IN          29.7064            29.803          29.3           29.4
 Camshaft cam height
                               EX          29.4251           29.4388         29.15           29.05
                               IN              10.000-10.015                         10.10
 Valve rocker arm I.D.
                               EX               10.00-10.015                         10.10

 Valve rocker arm shaft        IN               9.972-9.987                          9.91
 O.D.                          EX               9.972-9.987                          9.91
                               IN                     1.0                             1.8
 Valve seat width
                               EX                     1.0                             1.8
                               IN               4.975-4.990                          4.90
 Valve stem O.D.
                               EX               4.975-4.990                          4.90
                               IN               5.000-5.012                          5.30
 Valve guide I.D.
                               EX               5.000-5.012                          5.30

 Valve stem-to-guide           IN                0.10-0.037                          0.08
 clearance                     EX               0.030-0.057                          0.10


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