Yamaha YZF-R125 Service Manual: Faulty clutch

Clutch slips

1. Clutch

  • Improperly assembled clutch
  • Improperly adjusted clutch cable
  • Loose or fatigued clutch spring
  • Worn friction plate
  • Worn clutch plate

2. Engine oil

  • Incorrect oil level
  • Incorrect oil viscosity (low)
  • Deteriorated oil

Clutch drags

1. Clutch

  • Unevenly tensioned clutch springs
  • Warped pressure plate
  • Bent clutch plate
  • Swollen friction plate
  • Bent clutch push rod
  • Broken clutch boss
  • Burnt primary driven gear bushing

2. Engine oil

  • Incorrect oil level
  • Incorrect oil viscosity (high)
  • Deteriorated oil
    Jumps out of gear
    Shift shaft Incorrect shift pedal position Improperly returned stopper lever Shift forks Worn shift fork Shift drum Incorrect axial play Worn shift drum groove Transmission ...

    Overheating
    Engine 1. Clogged coolant passages Cylinder head and piston Heavy carbon buildup 2. Engine oil Incorrect oil level Incorrect oil viscosity Inferior oil quality Cooling system 1. ...

    Other materials:

    Checking the shift shaft
    1. Check: Shift shaft Bends/damage/wear Replace. Shift shaft spring Damage/wear Replace. Checking the stopper lever 1. Check: Stopper lever Bends/damage Replace. Roller turns roughly Replace the stopper lever. Stopper lever spring Damage/wear Replace. ...

    Checking the diode
    1. Check: Diode Out of specification Replace. NOTE: The pocket tester or the analog pocket tester readings are shown in the following table. a. Disconnect the diode from the wire harness. b. Connect the pocket tester ( × 1) to the diode terminals as shown. c. Check the diod ...

    Cast wheels
    To maximize the performance, durability, and safe operation of your vehicle, note the following points regarding the specified wheels. The wheel rims should be checked for cracks, bends or warpage before each ride. If any damage is found, have a Yamaha dealer replace the wheel. ...

    2019 Copyright www.yam-r125.net |