Topic: Head Light Vibrates

[Tree]

The Headlight lens on my '77 CB550K is vibrating and making an annoying "buzzing" sound when the engine rev's.  If I put my hand on the headlight lens it stops.    It's an aftermarket version as in the pictures below.  I wondered if anyone else has had a similar problem and what I might to about it. 

Thanks.

[Roach]

check and see if your adjustment screw isnt soo loose that its vibrating?

[MCRider]

Assuming its not something loose in the sealed beam, tighten the 2 minnie screws that hold the 2 rings together. Then experiment with the 2 that have the cotter pins in them. can't tighten them too tight as it won't be able toadjust. But somewhere in between...