Thread: 2006 ZS250GS
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Old 04-01-2013, 07:23 PM   #5
FastDoc   FastDoc is offline
 
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Join Date: Mar 2009
Location: Southeastern Washington desert
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For the valves check out Spudr Rider's excellent tutorial. This will directly apply to your bike.

I would estimate normal compression for your bike to be about 160-175. Anything above 150 is probably fine. Anything under 100-125 could keep it from starting.
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