This K2 cb750 had a piece of something sticking between the headlight rings. I thought it somehow was wiring. When I removed the light I could see there was a 1/4" rubber hose cap forced in there to hold the rings in place. The two screws that locate the bulb between the pieces were also loose.
What I found was one tin nut was backwards causing it to repeatedly slip rather than tighten, the other side was missing its tin nut. One side had a lock washer, the other side had a flat washer and a rubber washer in addition to the two spring pins.
I raided my old headlight parts tote and found what it needed. The bent-up headlight that I robbed was black on the front, it was asphalt. Dang, that had to be a rough landing.
I knew the PO of this bike, he was a professional mechanic. RIP Dick, he would tell me to pizz off and laugh about it over a beer.
