Yamaha YZF-R125 Service Manual: Faulty front fork legs

Leaking oil

- Bent, damaged or rusty inner tube

- Cracked or damaged outer tube

- Improperly installed oil seal

- Damaged oil seal lip

- Incorrect oil level (high)

- Loose damper rod assembly bolt

- Damaged damper rod assembly bolt copper washer

- Cracked or damaged front fork cap O-ring

Malfunction

- Bent or damaged inner tube

- Bent or damaged outer tube

- Damaged fork spring

- Worn or damaged outer tube bushing

- Bent or damaged damper rod

- Incorrect oil viscosity

- Incorrect oil level

    Poor braking performance
    - Worn brake pad - Worn brake disc - Air in hydraulic brake system - Leaking brake fluid - Faulty brake caliper kit - Faulty brake caliper seal - Loose union bolt - Damaged brake hose - Oil or ...

    Unstable handling
    Handlebars - Bent or improperly installed right handlebar - Bent or improperly installed left handlebar 1. Steering head components - Improperly installed upper bracket - Improperly installed low ...

    Other materials:

    Installing the rear wheel (disc)
    1. Install: Rear brake disc NOTE: Tighten the brake disc bolts in stages and in a crisscross pattern. 2. Check: Rear brake disc Refer to "CHECKING THE REAR BRAKE DISC" on page 4-33. 3. Lubricate: Rear wheel axle Contact surface of rear wheel hub and rear wheel Whee ...

    Checking the clutch boss
    1. Check: Clutch boss splines Damage/pitting/wear Replace the clutch boss. NOTE: Pitting on the clutch boss splines will cause erratic clutch operation. Checking the pressure plate 1. Check: Pressure plate Cracks/damage Replace. Checking the clutch push lever and short clutch push ...

    Avoid Carbon Monoxide Poisoning
    All engine exhaust contains carbon monoxide, a deadly gas. Breathing carbon monoxide can cause headaches, dizziness, drowsiness, nausea, confusion, and eventually death. Carbon Monoxide is a colorless, odorless, tasteless gas which may be present even if you do not see or smell any en ...

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