Just bought a used abu 6000-c and the anti reverse is not catching all the time. Anybody know the fix?

If the button clicks out when you reel like it's supposed to then it's the "stopper" under the plate on the handle side. Not sure of proper term but you'll see it. Sits on top of a gear and only allows the gear to go one way, when you crank the handle. Should click down into the gear and stop it from spinning backwards. It's either damaged and you need a new one or if you get lucky you can turn it up and fix it.

Or send it to turbo Fred for a rebuild and be able to cast a mile smooth.

thanks, gonna look at her innards.

This---

Might just need good cleaning and lube

It's the Anti reverse Dog...simple fix

One of two things, either the prongs of the anti-reverse dog are spread too far apart (bend them together well) or there's a lot of old grease built up on it (clean it).

Fair warning, if you've never opened one up before, pay close attention to where things go and in what order they stack. I made that mistake when I first started using round reels and ended up having to take it to Turbofred to straighten it out. Also, be careful when you take out the spool that the little tubes on the spool brake don't fall off and disappear. Done that too and it's like trying to find a brown grain of sand on the beach.

Thankfully abu usually sends some extras in the box when you buy a new one. Ive don't that a few times as well.

Im betting on old grease gunking something up. Pay attention to how you take it apart get a paper towel or two and put the parts in order and proper direction as you take them off. Lightly grease what is greased and oil what is oiled and reassemble. Would be a good time to clean and grease your drag washers as well, will make it smooth as the day it was new again.