Hung rev counter

[toycollector10]

Hi, my tacho is sitting at 2000 RPM when the engine is off. When I am riding the bike the revs fluctuate between 2000 and 5000 RPM. No higher. If I tap the face of the tacho the needle slowly jerks down to the zero stop. I'm reluctant to cut into the chrome band to have a look inside and I'm also not keen to squirt lubricant into the back of it in case it weeps up and out onto the face. I have only put about 6000 miles on a brand new tacho cable so I don't think that's the problem.

Any ideas?

[z1bman]

i would say you have only got two options. get the one you have got professionally re furbished or replace with a new replica

[Mark Tiller]

With a small screwdriver you can open the band up by working your way round with it face down

[mick znone]

the damping fluid has gone south, they can be fixed by those in the know, i believe there is also a magnet inside that looses its strength. best to get it fixed by a pro, its a closely guarded secret what fluid should be used.

i have heard that the repro units are very inaccurate, nut havnt tried one myself. also, thy do not have the ND on the face so are easily recognised as a repro, unless you put an original face on a repro clock, but this would cost as much as having yours fixed. hope this helps.

[KeithZ1R]

Al Marshal 's your man