Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Did you slip it up on the shaft far enough? If you turn tiller by hand, do you feel the shaft turning? The flex shaft should be locked, and would only turn when the engine is running. Have you used it before? Shaft is not damaged on the tiller end?
Se manual link above.
Thanks, ***** ***** to be a coupling problem, just not up far enough.