I have just had to tackle SWMBO's hair and her mine, with an old 240v mains 'buzz' trimmer, for which the instructions were lost long ago. On the side of it there are two adjustments, a lever which moves the engagement of one of the blades back and forth with relation to the other blade, then a sort of plastic screw. Its that screw I struggling to work out how to adjust.
Midway through hair cutting, the trimmer began making a tremendous amount of noise, a much louder buzz. Adjusting the screw seemed to affect the buzz, but not fix it.
From memory the moving blade is between two strong springs, one fixed, the pressure of the other adjusted by the screw.
Does anyone know how this screw should be adjusted please?
Both haircuts turned out reasonable, despite the racket from the trimmer.