Yamaha YZF-R125 Service Manual: Installing the swingarm

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

1. Lubricate:

  • Bearings
  • Spacers
  • Dust covers
  • Pivot shaft

2. Install:

  • Bearings "1"

Installing the swingarm


2. Swingarm

A. Left side

B. Right side

3. Install:

  • Swingarm adjusting collar "1"
  • Swingarm "2"
  • Pivot shaft
  • Pivot shaft nut "3"

a. Install, and then fully turn in the swingarm adjusting collar so that it contacts the frame.

Installing the swingarm


b. Install the swingarm, pivot shaft, washer and pivot shaft nut.

NOTE:

Temporarily tighten the pivot shaft nut.

c. Turn the swingarm adjusting collar out to tighten it and so that it contacts the dust cover on the swingarm.

d. Tighten the pivot shaft nut.


Installing the swingarm


e. Check the swingarm side play.

Refer to "REMOVING THE SWINGARM" on page 4-61.

4. Install:

  • Rear shock absorber assembly
  • Relay arm
  • Rear wheel Refer to "REAR SHOCK ABSORBER ASSEMBLY" on page 4-56 and "REAR WHEEL" on page 4-12.

5. Adjust:

  • Drive chain slack Refer to "ADJUSTING THE DRIVE CHAIN SLACK" on page 3-21.

    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 ...

    Chain drive
    Removing the drive chain 1. Stand the vehicle on a level surface. WARNINGSecurely support the vehicle so that there is no danger of it falling over. NOTE: Place the vehicle on ...

    Other materials:

    Tachometer
    Tachometer Tachometer Tachometer red zone The electric tachometer allows the rider to monitor the engine speed and keep it within the ideal power range. When the key is turned to "ON", the tachometer needle will sweep once across the r/min range and then return to zero r/min ...

    Starting failures
    Engine 1. Cylinder and cylinder head - Loose spark plug - Loose cylinder head or cylinder - Damaged cylinder head gasket - Damaged cylinder gasket - Worn or damaged cylinder - Incorrect valve clearance - Improperly sealed valve - Incorrect valve-to-valve-seat contact - Incorrect valve timi ...

    Checking the cylinder head
    1. Eliminate: Combustion chamber carbon deposits (with a rounded scraper) NOTE: Do not use a sharp instrument to avoid damaging or scratching: Spark plug bore threads Valve seats 2. Check: Cylinder head Damage/scratches   Replace. Cylinder head water jacket Min ...

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