mxu 50 Workshop-manual : Page 62

          3. INSPECTION/ADJUSTMENT                                                                ATV 50


 SERVICE INFORMATION
 GENERAL

   WARNING
 ·Before running the engine, make sure that the working area is well-ventilated. Never run the
  engine in a closed area. The exhaust contains poisonous carbon monoxide gas which may
  cause death to people.
 ·Gasoline is extremely flammable and is explosive under some conditions. The working area
  must be well-ventilated and do not smoke or allow flames or sparks near the working area or
  fuel storage area.

 SPECIFICATIONS
 ENGINE
 Throttle grip free play : 14 mm (0.04 - 0.16 in)
 Spark plug gap           : 0.60.7 mm (0.024 ­ 0.028 in)
 Spark plug: Standard : NGK: BR8HAS
 Idle speed               : 1800100rpm
 Gear oil capacity (MXU 50/MX'ER 50):
    At disassembly : 0.12 liter (0.11 lmp qt, 0.13 Us qt)
    At change        : 0.09 liter (0.08 lmp qt, 0.1 Us qt)
 Gear oil capacity (MXU 50 REVERSE):
    At disassembly : 0.3 liter (0.26 lmp qt, 0.32 Us qt)
    At change        : 0.25 liter (0.22 lmp qt, 0.26 Us qt)
 Cylinder compression: 1200 kPa (12 kgf/cm,170 psi)
 Ignition timing:
 MXU 50/MX'ER 50: BTDC 22°/2000rpm
 MXU 50 REVERSE: BTDC 13.5°/1500rpm

 CHASSIS
 Front brake free play: 1020 mm (0.4 ­ 0.8 in)
 Rear brake free play: 1020 mm (0.4 ­ 0.8 in)

 TIRE PRESSURE
                       MX'ER 50 (1 Rider)                MXU 50 REVERSEMXU 50 (1 Rider)
      Front        33 kPa (0.33 kgf/cm, 4.7 psi)           28 kPa (0.28 kgf/cm, 3.9 psi)
      Rear         33 kPa (0.33 kgf/cm, 4.7 psi)           28 kPa (0.28 kgf/cm, 3.9 psi)
 TIRE SIZE:
 MX'ER 50:
  Front: 20*7-8
  Rear : 22*10-8

 MXU 50 REVERSE/MXU 50
  Front: 21*7-10
  Rear : 22*10-10



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