The tach on my 75 never worked since i got the bike. Goes up and up and never comes down. Tried tach from recent 74 bike recently added to garage and it worked fine just connected to new cable (not mounted). When I switched out tachs in mounting it worked at first. Went t5o start and go for a burn and it would not work. That tach is now doing something similar to original. The only thing left is the gear drive in the head. Any thoughts?
Thanks
