Yamaha YZF-R125 Owners Manual: Starting the engine

In order for the ignition circuit cut-off system to enable starting, one of the following conditions must be met:

  • The transmission is in the neutral position.
  • The transmission is in gear with the clutch lever pulled and the sidestand up.

1. Turn the key to "ON" and make sure that the engine stop switch is set to"".


The following warning lights and indicator light should come on for a few seconds, then go off.

  • Neutral indicator light
  • Turn signal indicator light
  • High beam indicator light
  • Coolant temperature warning light
  • Engine trouble warning light

NOTICE
If a warning or indicator light does not go off, see page 3-2 for the corresponding warning and indicator light circuit check.

  1. Shift the transmission into the neutral position. (See page 5-2.) The neutral indicator light should come on. If not, ask a Yamaha dealer to check the electrical circuit.
  2. Start the engine by pushing the start switch. NOTICE: For maximum engine life, never accelerate hard when the engine is cold!

    If the engine fails to start, release the start switch, wait a few seconds, and then try again. Each starting attempt should be as short as possible to preserve the battery. Do not crank the engine more than 10 seconds on any one attempt.

    Operation and important riding points
    Read the Owner's Manual carefully to become familiar with all controls. If there is a control or function you do not understand, ask your Yamaha dealer. WARNING Failure to familiarize yoursel ...

    Shifting
    Shifting Shift pedal Neutral position Shifting gears lets you control the amount of engine power available for starting off, accelerating, climbing hills, etc. The gear positions a ...

    Other materials:

    Replacing the front brake pads
    NOTE: When replacing the brake pads, it is not necessary to disconnect the brake hose or disassemble the brake caliper. 1. Measure: Brake pad wear limit "a" Out of specification Replace the brake pads as a set. 2. Install: Brake pad support Brake pad spring Brake pads ...

    Checking the turn signal relay
    1. Check: Turn signal relay input voltage Out of specification →The wiring circuit from the main switch to the turn signal relay coupler is faulty and must be repaired. a. Connect the pocket tester (DC 20 V) to the turn signal relay terminal as shown. - Positive tester probe  b ...

    Installing the generator
    1. Install: Woodruff key Generator rotor Washer Generator rotor nut NOTE: Clean the tapered portion of the crankshaft and the generator rotor hub. When installing the generator rotor, make sure the woodruff key is properly sealed in the keyway of the crankshaft. 2. Tighte ...

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