DR-Z 125 will not start!

That is why I told you to have a friend do it. If you had the throttle held on during that test and you know the gauge works i think its time to check for s bent valve and or jumped timing.
 
That's fine. you need to take off the valve cover and the ignition cover. So top of head and the cover with the brand name on the lower left side of the engine.
 
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