Yamaha YZF-R125 Service Manual: Checking the front brake master cylinder

Yamaha YZF-R125 Service Manual / Chassis / Front brake / Checking the front brake master cylinder

1. Check:

  • Brake master cylinder Damage/scratches/wear Replace.

  • Brake fluid delivery passages (brake master cylinder body) Obstruction Blow out with
    compressed air.

2. Check:

  • Brake master cylinder reservoir Cracks/damage Replace the brake
    master cylinder.
  • Brake master cylinder reservoir diaphragm Damage/wear Replace.

3. Check:

  • Brake hose Cracks/damage/wear Replace.

Assembling the front brake master cylinder

WARNING
  • Before installation, all internal brake components should be cleaned and lubricated with clean or new brake fluid.
  • Never use solvents on internal brake components.
    Removing the front brake master cylinder
    NOTE: Before removing the front brake master cylinder, drain the brake fluid from the entire brake system. 1. Disconnect: Front brake light switch 2. Remove: Brake hose union bolt Copp ...

    Installing the front brake master cylinder
    1. Install: Brake master cylinder "1" Brake master cylinder holder "2" NOTE: Install the brake master cylinder holder with the arrow mark "a" pointing forward. Align the end of the br ...

    Other materials:

    Specifications
    Dimensions: Overall length: 2015 mm (79.3 in) Overall width: 660 mm (26.0 in) Overall height: 1065 mm (41.9 in) Seat height: 818 mm (32.2 in) Wheelbase: 1355 mm (53.3 in) Ground clearance: 155 mm (6.10 in) Minimum turning radius: 3100 mm (122.0 in) Weight: With oil and fuel: 138.0 k ...

    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 ...

    Troubleshooting details
    This section describes the measures per fault code number displayed on the FI diagnostic tool. Check and service the items or components that are the probable cause of the malfunction following the order given. After the check and service of the malfunctioning part have been completed, re ...

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