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Mirror threads

  • Thread starter Thread starter james750tz
  • Start date Start date
J

james750tz

Guest
Maybe I am nutz, but I was always under the impression that Suzukis, Hondas, and Kawz all used right hand threads on both mirrors. My bike (GS750T) has Yamaha OEM mirrors on it which are obviously not stock. The mirror mounts a perch that is mounted on the master cylinder and it has reversed threads! The master cylinder sure looks like the stock one, so what gives? The Yamaha mirror on the right side should not work in the factory location because of the threads if it were the stock cylinder. Do any of you 80s GSers have the same setup?

-james
 
I rebuilt the front master cylinder on my my '81 750E yesterday. Mirrors and M/C are original with the bike. Right mirror mounts to the M/C clamp and has right-handed threads.

A pic of what you have might help.
 
Yamaha runs left-handed threads on their left hand mirrors, right-hand on the right-hand mirrors. (or did in the 70s & 80s, dunno if they still do)
 
Plooker said:
Yamaha runs left-handed threads on their left hand mirrors, right-hand on the right-hand mirrors. (or did in the 70s & 80s, dunno if they still do)
Click to expand...

I think you have that backwards. The right hand mirror has LH threads and the left hand mirror has RH threads.

Anyway, I'll take a pic of my master cylinder and you guys see what you think is going on here.

-james
 
I've worked on Yamahas that have normal (ie RH thread) M10 threaded mirrors - may be around late 80s / early 90s onwards.
 
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