Husqvarna 28cc Gas Line Trimmer "drill spinning bit" Questions

...can i put in a drill bit to start this? DO NOT DO THAT!!! If you are not able to repair your unit, buy a new one! Take it to a small engine clinic or something! Do not put yourself in ...

...looking piece on bottom of shaft. spin that around tell you find a hole on the side put a drill bit or small punch in hole this will lock the shaft up so you can tighten or loosen the head or ...

...drill an 1/8th in hole through the bottom of the plastic nub and then assemble nub and spring and secure putting a screw through the hole in the bottom of the black cup, securing the nub. All you are ...

...spinning. Then when tilt the cutter toward the sky it slips back into gear. So how far up the drive shaft should I put that little clamp and how do I tighten it correctly so the drive shaft does not ...