9540 hard to start even after gettin engine done up

I purchased a 1979 Agri Power 7000 and from what I have been able to tell from my research is that it was supposedly made by Zetor. I have seen Zetor tractors that look almost identical to this tractor. The tractor is very sound and only had 400hrs on it when I bought it. The gentleman I bought it from tells me that he never had any trouble finding parts or have it worked on at any Zetor dealer. I hope this is true!! I think there are a few dealers in my area (North Texas). Can anyone comfirm that this tractor was made by Zetor and what would be the COMPARABLE ZETOR MODEL??? I am interested in adding a loader and need to know what to look for that will fit my tractor. Also if anyone might know of a place anywhere in Texas that I may be able to find a used loader that would fit it. Thanks!!!!

Agri-power info is hard to find but this might help:

http://www.ytmag.com/orphans/messages/753.html

built 1979.. that would be a 6911 or 6945 then...

Loaders: all you have to watch for, is that it fits a 4 cylinder UR1 tractor. no matter if it has been on a brand new one, or on a 1962 4011. Oh yes, i think your tractor has the old power assisted steering, with rods alongside the left side of the bonnet. So find a loader for a power assist steered 4 pot. Mounting brackets should fit any UR1 tractor, but some newer loaders may collise with the steering rods on older power steering systems.

Thanks for your help gentlemen!! I will probably be checking in from time to time for more expert advice. Cheers.

we have a 9540 which is only after getin its engine done up new pistons+rings head done heater plugs and injectors checked and still hard 2 start theres plenty of smoke when trying but doesnt want 2 fire any help please