Great find, and at a good deal:thumbsup: It looks to be in good original condition, this is the way I like to find things, I'm not one who is attracted by the gleam of things ,I look beyond and focus on the mechanicals and how well it has been serviced and taken care of
I have a 1700 as well and has been a tough and reliable machine for the 4 1/2 years I've owned it, and believe me when I say I probably put my tractor through more than anyone else here does, I've only run it hot 1 time during some heavy bush-hogging, Luckily there were no engine damages, only a split radiator and I repaired it myself,
So be sure to frequently clean the Radiator screen, as well as the radiator its self,
Your 1700D (4wd) will of-course have a advantage over my 2wd, by it having front wheel drive assist it will ease up on the engine torque requirement for preforming task, ( less wear and tear on the engine ), speaking of engines....... you should also be proud to know your 1700 also has the same engine as many of the big brother tractors the( ym2000), only the 1700 has a smaller cylinder bore, This is how the 1700 can get by without having a water pump, it has thicker cylinder walls to absorb more of the friction/heat, But yes you must keep a check on the thermosyphon cooling system, being sure it has the right amount of coolant/water mixture so it can perk, I say "Perk" because it reminds me on how the Old coffee makers use to work, Would get to a certain heat temperature, perk the water up to the top on the maker and drain back through the coffee grains, Is the best way I know how to explain the thermosyphon system and how it works
