RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)
YOU ARE TURNING THE ENGINE BACKWARDS WHEN CHECKING THE TIMING! You have retarded the timing to the point where the engine will barely run.
The ignition fires when the the magnet leaves the sensor. This can happen in either direction. If you turn the propeller backwards from the direction that the engine runs, your degree measurement will be off by the width of the sensing field of the ignition sensor.
With the sensor on the casting seam, the advance is in the 32-34 degree range. That is about all the advance the engine can stand.