Yamaha YZF-R125 Owners Manual: Battery

A poorly maintained battery will corrode and discharge quickly. The electrolyte level, battery lead connections and breather hose routing should be checked before each ride and at the intervals specified in the periodic maintenance and lubrication chart.

WARNING


  • Electrolyte is poisonous and dangerous since it contains sulfuric acid, which causes severe burns. Avoid any contact with skin, eyes or clothing and always shield your eyes when working near batteries. In case of contact, administer the following FIRST AID.

  • EXTERNAL: Flush with plenty of water.

  • INTERNAL: Drink large quantities of water or milk and immediately call a physician.

  • EYES: Flush with water for 15 minutes and seek prompt medical attention.

  • Batteries produce explosive hydrogen gas. Therefore, keep sparks, flames, cigarettes, etc., away from the battery and provide sufficient ventilation when charging it in an enclosed space.

  • Take care not to spill electrolyte on the drive chain, as this may weaken it, shorten chain life and possibly result in an accident.

  • KEEP THIS AND ALL BATTERIES OUT OF THE REACH OF CHILDREN.

To check the electrolyte level

  1. Place the vehicle on a level surface and hold it in an upright position.

TIP
Make sure that the vehicle is positioned straight up when checking the electrolyte level.

  1. Check the electrolyte level in the battery.

TIP
The electrolyte should be between the minimum and maximum level marks.


  1. Maximum level mark

  2. Minimum level mark

  1. 3. If the electrolyte is at or below the minimum level mark, add distilled water to raise it to the maximum level mark. NOTICE: Use only distilled water, as tap water contains minerals that are harmful to the battery.

  2. Check and, if necessary, tighten the battery lead connections and correct the breather hose routing.

To store the battery

  1. If the motorcycle will not be used for more than one month, remove the battery, fully charge it, and then place it in a cool, dry place. NOTICE: When removing the battery, be sure the key is turned to "OFF", then disconnect the negative lead before disconnecting the positive lead.

  2. If the battery will be stored for more than two months, check the specific gravity of the electrolyte at least once a month and fully charge the battery whenever necessary.
  3. Fully charge the battery before installation.
  4. After installation, make sure that the battery leads are properly connected to the battery terminals and that the breather hose is properly routed, in good condition, and not obstructed. NOTICE: If the breather hose is positioned in such a way that the frame is exposed to electrolyte or gas expelled from the battery, the frame could suffer structural and external damages.

    Checking the wheel bearings
    The front and rear wheel bearings must be checked at the intervals specified in the periodic maintenance and lubrication chart. If there is play in the wheel hub or if the wheel does not turn ...

    Replacing the fuses
    Replacing the fuses Fuse box Spare fuse Headlight fuse Signaling system fuse Ignition fuse Radiator fan fuse Main fuse The fuse box is located under the rider seat. If a fuse ...

    Other materials:

    Assembling the front wheel
    1. Install: Wheel bearings Oil seal a. Install the new wheel bearings and oil seal in the reverse order of disassembly. CAUTION:Do not contact the wheel bearing inner race "1" or balls "2". Contact should be made only with the outer race "3". NOTE: Use a socket " ...

    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. WARNINGDo not attempt to straighten a bent inner tube as this may dangerously weaken it. 2. Measure: Spring free length "a" Out of sp ...

    Checking the timing chain and timing chain guide
    1. Check: Timing chain Damage/stiffness Replace the timing chain and camshaft sprocket as a set. 2. Check: Timing chain guide (intake side) Damage/wear Replace. Checking the oil strainer 1. Check: Oil strainer Damage   Replace. Contaminants Clean with solvent. ...

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