Tach

My newly rebuilt tach with a little over 200 miles crapped out. I need to check the cable and drive but also the tach itself with a drill. I've done it before but I forget does the drill need to be set to turn clockwise or counter clockwise?

A magnetic tach, or speedo, turns in the direction of its input cable. The needle turns CW viewed from top, but CCW when viewed from below ...... Thus cable must turn CCW.

Slick

htown16 said:

My newly rebuilt tach with a little over 200 miles crapped out. I need to check the cable and drive but also the tach itself with a drill. I've done it before but I forget does the drill need to be set to turn clockwise or counter clockwise?

Click to expand...

Who rebuilt it?

htown,
Something to watch out for.
Make sure you don't have a too long stem stick out on the cable at the tach side entry point. That will stop it from working in short order. It will wreck the tack or speedo.
I can't remember the length it needs to be for max. I think 7/16" but don't quote me on that. Some tach and speedo's had cups as spacers surrounding the input threaded cable entry.
Regards,
Thomas

Yes, protrusion length is critical. The drill will have to turn anti-clockwise for those of us in the northern hemisphere. An 'easy out' of the correct size works pretty good, but most drills will not go fast enough, they may get to 20-30mph.

Okay never got a chance to spin it, the inner cable came out in several pieces. At least a new cable is cheaper than a new or rebuilt tach. Going through teething problems with this new rebuild. So far have replaced the clutch discs that wouldn't release, a warped front brake disc, new #19 idle jets and blended in several dings I managed to put in the new paint job. Along with the usual carb adjusting and timing check and retorquing the head and resetting the valves and oil and filter changes. There's a long path from a bike that sits there all gleaming and looks done and something you can ride down the highway reliably. But once you get there it's a great feeling. For any new guys don't think you can purchase a restoration with zero miles and hop on it and go without having to do any wrenching. Much better to get one that has at least 1K miles on it and let someone else suffer the pain. Even if the pipes are blue.