How-To: YZ250F Top End Replacement

 Year, Make, Model

The model covered in this video is the 2009 Yamaha YZ250F. This video should cover other years and may be useful for the 450’s as well.

Symptoms

None. The owner bought this bike with an unknown history and 120hrs on the meter.

Diagnosis

None. It was running fine before the top end and cam chain were replaced for preventative maintenance reasons.

Tools

(Links are affiliate and help support this site)

Torque wrench 1/4″

Torque wrench 3/8″

Flywheel puller

Rockymountainatvmc.com - Dirt bike & ATV parts

How-To Video

Do you have 40-60hrs on your top end? It’s time to replace it! Below, the full length video is available for purchase which covers top end rebuild, bottom end rebuild, and valve inspection.

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