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YZ250 Maintenance

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Hi, I'm looking to buy a 07-08 250 2-stroke and heard many good things about the YZ. And I'm wondering what kind of maintenance schedule these bikes need. I'm used to 4-strokes and It's beginning to be that I'm working on my CRF more than riding it. Thanks.

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since you have a X model I am guessing you ride woods. You will need to rebuild the top end on a 2 stroke 250 every 40-80 hours depending on how you ride. A lot of people have got over 100+ hours out of a top end. It is a cheap and easy procedure to perform. Keep the air filter clean and the gearbox oil fresh ( every 5 hours or so ). imo they dont require nearly as much maintenance. ill let someone else chime in some more info

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I actualy ride mostly motocross, and I rebuild my bike ever 50 hours so that's noting. I just want to know everything that needs to be done. As I'm used to 4-stoke maintenance like valve adjusting and that sort of thing.

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Word is that the cast pistons last even longer in these bikes. I changed my original OEM after 60 hours cause compression was getting sorta low. I figure I can go another 60-100 hours before the next one. The two stroke top end job is so easy even I can do it.

I change my gear oil every 4-5 trail rides which are usually 4-6 hours in length. I think the oil needs to look different than new before it comes out.:confused:

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How often do powervalves need cleaning.

If you keep it jetted correctly, they stay clean a LONG time.

I cleaned the pv on my 97 once in 5 years. The new one is more complicated, but expect to forget how to clean it by the time you have to.

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cleanliness is godliness as is on any bike!!! keep filter clean, bearings greased do a topend once yearly as well as fresh suspension fluid and adjust the jetting according to the season and the bike will last a long time!

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