2004-2009 Honda CRF250R Valve Adjustment Tutorial- FULL LENGTH

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Here in this video I demonstrate the correct procedures, and tools required to properly perform a valve adjustment on the 2004-2009 series Honda CRF250R dirt bike. In this video, our customer stated he had performance issues and his bike was hard to start. After performing a cylinder compression test, I was able to determine that compression was 0 P.S.I. After performing a leak down test, I was able to determine that the intake valves were leaking greater than 30%. I found out that the intake valves were being held open by about .002-.003" and that was enough to have enough compression leakage to have performance loss. I took a guess after measuring the valve shims that were installed, and was able to get all the intake and exhaust valves to the proper clearance the first time. Sometimes I don't always get the proper clearances the first time, and an additional valve adjustment is required in these particular situations, but my experience pulled through and I was able to restore loss power to my customers dirt bike for an affordable price all in the same day. Standard cylinder compression on these dirt bikes is 57 P.S.I @ 800 r.p.m. Due to the fact these engines are high compression, 12.2:1 compression ratio, cylinder and valve blow by should not exceed 3% or this is typically an indication of valve train or power train damage or wear. If you don't have the proper tools or feel confident performing these procedures, avoid doing a valve adjustment on your own, and use this video for educational purposes. And by the way, the bike ended up starting and running great once taken outside and the carburetor was slightly adjusted. She was doing wheelies!