vitality 50 2t 4t 1 Manuel atelier : Page 160

          11. CRANKCASE/CRANKSHAFT                                                      VITALITY 50

 SERVICE INFORMATION
 GENERAL INSTRUCTIONS
 · This section covers crankcase separation to service the crankshaft. The engine must be removed
   for this operation.
 · The following parts must be removed before separating the crankcase.
   -Cylinder head ( Chapter 6 (2-stroke))
   -Cylinder/piston ( Chapter 7)
   -Drive and driven pulleys ( Chapter 9)
   -A.C. generator ( Chapter 8)

 SPECIFICATIONS (2-Stroke)
                              Item                       Standard (mm)      Service Limit (mm)
             Connecting rod big end side clearance                                  0.6
  Crankshaft Connecting rod big end radial clearance                               0.04
             Run out A/B                                                         0.1/0.15

 SPECIFICATIONS (4-Stroke)
                              Item                       Standard (mm)      Service Limit (mm)
             Connecting rod small end free play            0.050.4                  0.6
  Crankshaft Connecting rod big end radial clearance        00.008                 0.05
             Run out                                                               0.10

 TORQUE VALUES
 Crankcase bolt                       0.81.2kgf-m
 Cam chain tensioner slipper bolt     0.81.2kgf-m (4-Stroke)


 SPECIAL TOOLS (2-stroke)
 Crankcase puller                               E026
 Universal bearing puller                       E030
 Crankshaft install tool                        E016
 Crankcase assembly tool                        E024
 Oil seal and bearing install tool              E014


 TROUBLESHOOTING
 Abnormal engine noise
 · Excessive crank journal bearing play
 · Excessive crankpin bearing play
 · Excessive transmission bearing play



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