Yamaha YZF-R125 Quiz
Periodic maintenance and adjustment

Troubleshooting charts

In this manual: Periodic maintenance and adjustment
Introduction — 1Important manual information — 1Safety information — 9Description — 4Instrument and control functions — 16For your safety - pre-operation checks — 1Operation and important riding points — 6Periodic maintenance and adjustment — 43Motorcycle care and storage — 4Specifications — 1Consumer information — 2
~1min read
Starting problems or poor engine performance
Starting problems or poor engine performance Engine overheating WARNING
  • Do not remove the radiator cap when the engine and radiator are hot. Scalding hot fluid and steam may be blown out under pressure, which could cause serious injury. Be sure to wait until the engine has cooled.
  • After removing the radiator cap retaining bolt, place a thick rag, like a towel, over the radiator cap, and then slowly rotate the cap counterclockwise to the detent to allow any residual pressure to escape. When the hissing sound has stopped, press down on the cap while turning it counterclockwise, and then remove the cap.

Engine overheating TIP
If coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended coolant as soon as possible.

Test yourself

A quick Yamaha YZF-R125 quiz: every answer comes with an explanation and a link to the manual page.