Bergen Intrepid Magnum Tazer, Manual, Page: 23 / 88

Look at the ears on the tail pinion cage. You’ll notice the vertical slots that
allow for adjustment of the tail pinion mesh to the main gear. In the shaft
you will see a through hole and a divot. Slide the shaft through the rear
bearing with the divot to the front. Slide the brass spacer onto the shaft
inside the cage.
Install the pinion onto the shaft inside the cage, sliding the shaft forward
into the front bearing. Line up one of the threaded holes in the pinion with
the divot on the shaft. Install a 3X3 mm setscrew with loctite into this hole.
It is not necessary to install a setscrew in the other hole, but it won’t hurt
either.
Slide the delrin coupler on to the shaft from the rear.
Using your 1.5mm allen driver, line up the hole in the delrin coupler with the
hole in the shaft. If it’s a little tight, very carefully sand the front of the
delrin coupler, it won’t take much.