Main switch/steering lock
Main switch/steering lock
The main switch/steering lock controls the ignition and lighting systems, and is used to lock the steering. The various positions are described below.
ONAll electrical circuits are supplied with power, the meter lighting, taillight, license plate light and auxiliary lights come on, and the engine can be started. The key cannot be removed.
TIPThe headlight comes on automatically when the engine is started and stays on until the key is turned to "OFF", even if the engine stalls.
OFFAll electrical systems are off. The key can be removed.
WARNING Never turn the key to "OFF" or "LOCK" while the vehicle is moving. Otherwise the electrical systems will be switched off, which may result in loss of control or an accident. LOCK
The steering is locked, and all electrical systems are off. The key can be removed.
To lock the steering
Push.
Turn.
- Turn the handlebars all the way to the left or right.
- Push the key in from the "OFF" position, and then turn it to "LOCK" while still pushing it.
- Remove the key.

Push.
Turn.
Push the key into the main switch, and then turn it to "OFF" while still pushing it.
Test yourself
A quick Yamaha YZF-R125 quiz: every answer comes with an explanation and a link to the manual page.