Yamaha YZF-R125 Service Manual: Checking the front fork legs

Yamaha YZF-R125 Service Manual / Chassis / Front fork / Checking the front fork legs

The following procedure applies to both of the front fork legs.

1. Check:

  • Inner tube
  • Outer tube Bends/damage/scratches
    Replace.
WARNING

Do not attempt to straighten a bent inner tube as this may dangerously weaken it.

2. Measure:

  • Spring free length "a" Out of specification Replace.

Checking the front fork legs


3. Check:

  • Damper rod Damage/wear   Replace.


    Obstruction  Blow out all
    of the oil passages with compressed air.

  • Oil flow stopper Damage Replace.

CAUTION:

When disassembling and assembling the front fork leg, do not allow any foreign material to enter the front fork.

    Disassembling the front fork legs
    The following procedure applies to both of the front fork legs. 1. Remove: Rubber cap Clip "1" Front fork cap "2" (with O-ring) Fork spring NOTE: Push the front fork cap in the direc ...

    Assembling the front fork legs
    The following procedure applies to both of the front fork legs. WARNING Make sure the oil levels in both front fork legs are equal. Uneven oil levels can result in poor handling ...

    Other materials:

    Lubrication diagrams
    Clutch push lever Main axle Drive axle Crankshaft Oil filter Oil pump assembly Oil strainer To cylinder head Camshaft Crankshaft Main axle Drive axle ...

    Installing the piston and cylinder
    1. Install: Top ring "1" 2nd ring "2" Oil ring expander "3" Lower oil ring rail "4" Upper oil ring rail "5" NOTE: Be sure to install the piston rings so that the manufacturer marks or numbers face up. 2. Install: Piston "1" Piston pin "2" Piston pin clips "3" NOTE: ...

    Checking the brake fluid level
    Front brake Front brake Minimum level mark Rear brake Rear brake Minimum level mark Insufficient brake fluid may allow air to enter the brake system, possibly causing it to become ineffective. Before riding, check that the brake fluid is above the minimum level mark an ...

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