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 front brake caliper
    1. Check: Brake caliper pistons "1" Rust/scratches/wear Replace the brake caliper assembly. Brake caliper body "2" Cracks/damage Replace the brake caliper assembly. Brake fluid delivery passages (brake caliper body) Obstruction Blow out with compressed air. ...

    Checking the oil pump
    1. Check: Oil pump drive gear Oil pump driven gear Oil pump housing Oil pump housing cover Cracks/damage/wear Replace the defective part(s). 2. Measure: Inner-rotor-to-outer-rotor-tip clearance "a" Outer-rotor-to-oil-pump-housing clearance "b" - Oil-pump-housing-to-inn ...

    Installing the steering head
    1. Lubricate: Upper bearing Lower bearing Bearing races 2. Install: Lower ring nut Rubber washer Upper ring nut Lock washer Refer to "CHECKING AND ADJUSTING THE STEERING HEAD" on page 3-22. 3. Install: Upper bracket Steering stem nut NOTE: Temporarily tighten t ...

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