Showkahn

Howdy gents,

my Speedo is not reading any speed at all. I tested the cable with a drill and it works like it’s supposed to. However, when I screw it back in to the gear adapter, it doesn’t do anything. Could this just mean that I need to replace the gear or should I look elsewhere? Thanks in advance.

VROOM VROOM AMF

joe_padavano

Rather than resurrecting a thread that's well over a decade old, here's your very own thread. Since you've verified that everything from the cable to the speedo head is working, the problem is obviously in the trans. About the only possible failure is that either the drive or driven gear has stripped it's teeth, or the square drive in the end of the driven gear has worn out and no longer grips the cable. In any case, you'll need to pull the speedo drive adapter out of the trans and inspect the gears. You didn't tell us which trans you have, but the driven gears are all plastic. The drive gear on the transmission output shaft can be either metal or plastic. Inspect the teeth on both. Also inspect the square drive feature in the end of the driven gear. Note that the primary cause of these gears wearing out is that the cable has worn, increasing friction, so consider a new cable and sheath as well, or at least lube the cable inside the sheath, to avoid recurrence.

Showkahn

Awesome. Thanks for the help. I’m not really sure what trans I have but the square hole is worn out so I need to get a new speedo gear.

joe_padavano

How about we start with manual or automatic?

Showkahn

It is an automatic.

joe_padavano

So here's how to figure out which.

Showkahn

Thanks for the help. It’s a TH 350