Yamaha YZF-R125 Service Manual: Removing the swingarm

Yamaha YZF-R125 Service Manual / Chassis / Swingarm / Removing the swingarm

1. Stand the vehicle on a level surface.

WARNING

Securely support the vehicle so that there is no danger of it falling over.

NOTE:

Place the vehicle on a suitable stand so that the rear wheel is elevated.

2. Measure:

  • Swingarm side play
  • Swingarm vertical movement

a. Measure the tightening torque of the pivot shaft nut.


b. Measure the swingarm side play "A" by moving the swingarm from side to side.

c. If the swingarm side play is out of specification, check the spacers, bearings, and dust covers.


Removing the swingarm


3. Remove:

  • Pivot shaft nut
  • Pivot shaft
  • Swingarm "1"
  • Swingarm adjusting collar "2"

a. Loosen the pivot shaft nut.

b. Fully turn in the swingarm adjusting collar so that it contacts the frame "3".

c. Remove the pivot shaft nut, washer, pivot shaft and swingarm.

Removing the swingarm


    Swingarm
    ...

    Checking the swingarm
    1. Check: Swingarm Bends/cracks/damage   Replace. 2. Check: Pivot shaft Roll the pivot shaft on a flat surface. Bends Replace. WARNINGDo not attempt to straighten ...

    Other materials:

    Checking the clutch housing
    1. Check: Clutch housing dogs "1" Damage/pitting/wear  Deburr the clutch housing dogs or replace the clutch housing. NOTE: Pitting on the clutch housing dogs will cause erratic clutch operation. 2. Check: Bearing Damage/wear Replace the bearing and clutch housin ...

    Troubleshooting method
    The engine operation is not normal and the engine trouble warning light comes on. 1. Check: Fault code number a. Check the fault code number displayed on the FI diagnostic tool. b. Identify the faulty system with the fault code. Refer to "Self-Diagnostic Function table". c. Identi ...

    Shifting
    Shifting Shift pedal Neutral position Shifting gears lets you control the amount of engine power available for starting off, accelerating, climbing hills, etc. The gear positions are shown in the illustration. TIP To shift the transmission into the neutral position, press the ...

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