Sluggish Tachometer and other Gauges

[buickyouth]

So the instruments on this XS750SE that I picked up a few weeks ago are weak at best. I wrote it off to old/bad cables and bought some new ones from parts n more (tach, clutch, throttle).

However, when I swapped out the tach cable, I'm still getting really sluggish readings. It seems to register the idle speed if I leave it alone for a little bit. But the tach doesn't really do anything when I roll the throttle back.

I'm not sure where I should be looking next. The gauge or where the cable attaches to the engine.

Any help troubleshooting and directing me to what I should be checking is greatly appreciated.

Sidenote: The speedometer also seems to have a similar sluggishness to it.

Thanks,
Ian

[cywelchjr]

That's not unusual when they've sat a long time. They will often clear up over time, but otherwise what you can do is sprits a bit of wd40 up into the innards (carefully) to free things up. On my XS400 that made things work almost too well (it got almost twitchy there for a while before it settled down).

[buickyouth]

How crucial is using something like cable lube?

Would that have an impact on it?

[cywelchjr]

In my experience, cable lube will keep the cables from breaking, but doesn't have any impact on the gauges being sluggish.