Move over Fred's Guide, here's Anthony's guide to ruining your moped in 3 easy steps:
Step 1.) Shear the guide pin off of your throttle slide while reassembling your carburetor.
Step 2.) Rather than buying a new throttle slide, J-B weld a piece of scrap metal in place of the guide pin. A harder metal, like steel, works best (this is important for step 3.)
Step 3.) Enjoy the grinding sounds your moped produces as the jury-rigged guide pin breaks off and goes right into your crankcase. Congratulations! Your moped is ruined.
Given that I followed these steps, and my flywheel is now immobile, what are the chances that my engine will work again after I retrieve that guide pin? I guess my cylinder is OK, but the cranks and bearings and possibly the piston are probably shot. :(