timing belt 80 series

The short answer is you can't tell, unless it's about to fall apart.
I believe it is not a really big deal on that engine (the diesel, I presume)
So maybe just change and then you know for sure.
Cheers

Perhaps you could ask to see a receipt for the job. I just changed the timing belt in my Hilux after 150,000 klm (the recomended period for the 5L motor) and the belt looked brand new, slightly shiney on the tensioner side. I replaced tensioner pulley, idler pulley and water pump at the same time. The water pump looked like it had just come out of the box. It was shiney alloy with no trace of corrosion. Gotta love that red Toyota inhibitor!

any repair shop would have put a sticker on the timing belt cover. "If it's not there I'd spend the money and have it done anyway

Hi
Take the cover off yourself and have a look at the belts condition...it should look new...if its got any wear on it at all, pop another on....the fact your light is not on, is a good indication it was changed, but if you dont have a receipt...its $40 to ensure you dont have to spend 12000.
Andrew

Ring previous owner, if no luck change the timing belt, Replaced on on the 80 series years ago and at 100000 looked like new till you lined it up with the new one and saw how far it had stretched, it is not worth the risk. I would change it very cheap insurance.
Ray

just bought an 80 with 204 k and was told the belt had been changed and was shown the reciept along for some other work. You are right to be suss if he new he was selling it is concievable he turned the light off coz it is easy

Hey, congrats on getting an 80 series with 110 000 km on it. Not a great deal to change the belt so do it anyways. Theres nothing like peace of mind.