How-To: YZ250F Top End Replacement

Share This Post


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.


Service Manual

I have a post here where you can download the the OEM service manual for FREE in pdf format. I have several years available.



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



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



(Links are affiliate and help support this site)

Torque wrench 1/4″

Torque wrench 3/8″

Flywheel puller



(Links are affiliate and help support this site)

There are many options/brands on what parts you can reassemble with. Many stick with OEM while others go aftermarket. Click the Rocky Mountain ATV/MC link below to shop for your needs. - 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. Save yourself some money and take pride in maintaining your own bike! The video is hosted through Gumroad and can be streamed from any device. Guaranteed or your money back! Enjoy!

Buy Now



Has this video helped you with your top end maintenance? Comment below. Feel free to ask any questions.


Like my articles and How-To videos? Enter your name and email to get notified when new content becomes available.
No spam. No BS. No sharing email.
Liked it? Take a second to support Matthew on Patreon!