Birdhunter1
Veteran Member
i do't know about the AC 5020 but all the AC's I have ever been around have been reliable. As for the 135 it is a great tractor, I currently have one. There are two things I would look over real well. (1) Which engine does it have, you said it was a gas which means it could be a Continental Z-145ci engine or a 134ci. If it is a deluxe model and has multipower then it has the Z-145 engine which is a great running engine. The 134 is too but it doesn't have as much power as the 145. Both will power a 6 ft. BH and will handle the same loads but the 145 will do it with slightly less strain. (2) Check the hydraulic system over real well. If it has multipower and has a high amount of hours on it then you may have hydraulic problems in the future related to the multipower system that the easy fix for is to take of the multipower system ($400-. $500 to take off or else $2000+ to repair correctly). I have had this problem on mine and now the multipower is coming off, I mainly use it for mowing now and will not justify the extra expense just to have it. Keep in mind though that my 135 has had a lot of use (close to 4000 hours) and the hydraulic system and multipower have been heavily used although the machine as a whole has been taken care of well it has been used.