Question about 2004 Yamaha YZ 125

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Yz125 rear shock amount of oil on

Yz125 rear shock, amount of oil on rebuild? Pressure of nitrogen?

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The volume is less than about 1/2 quart - it's usually not measured going in since you fill the shock completely - there's no need to measure. Some guys assemble the entire shock, then fill with oil and cycle the shaft, then install the bladder cap last. My method is to install the shaft and seal head and the bladder, then put about 2 PSI in the bladder, then bleed through the compression cap. My method is a bit more complicated to explain, but it's effective at eliminating ALL the air from the oil and it keeps the bladder from being installed in a collapsed state.

As far as the nitrogen charge - 145PSI is stock. 130-160PSI is typical.

Posted on May 04, 2010

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Posted on Jan 02, 2017

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