CB750 Speedometer Advice
I need some speedo advice. Its reading incorrectly (too high) on my 74. When I’m going 30 it reads 35, at 70 it reads 80 (compared to GPS). The bike has dual front discs and if I remember correctly there is a modifaction or replacement of something in the front hub related to the speedo drive housing. What do I need to do to get this thing reading correctly?