I see where the valve is located, but how am I supposed to set it? All I got was a Parts Manual and a manual for the engine. PT didn't send me any kind of instructions beyond one page in the Parts Manual that doesn't even mention the draft control, much less how I'm supposed to adjust it. Was I supposed to get a separate operator's manual?
I apologize. It isn't in my manual, either. I was sure it was. Swiss cheese for brains I guess.
As far as I know, there is only one PT manual, and yes, it isn't as good as it could be. I consider the PT forum and the archives here to be the best manual. The Deutz came with two manuals, both of which are available online in PDF form, and there is an amazingly detailed shop manual, but it is not cheap.
Just FYI: I have learned a lot from information in the older threads. I find it useful to browse them occasionally, as I learn things in the related posts.
As a general rule, try your favorite search engine, or Google, with something like this;
"power-trac" "draft control" "adjust" site:tractorbynet.com
Today, hit #3 is this one;
Post in thread 'Draft Control'
Draft Control
It is the method that I use.
I find that if try to put too much pressure in the draft control system, (or put differently, trying to transfer too much weight to the tractor), the mower has a tendency to hit a bump and float up for a bit. I also notice that if I do the initial adjustment when the hydraulic oil is cold, I sometimes need to tweak it again when the oil has warmed up and thinned out a bit.
With the implement on and the tractor running, I think that adjusting the draft setting is a quick adjustment when you get the hang of it.
I can say that when the draft control is set properly, I find that the draft control is a big help in traction for things like mowing, especially slope mowing over uneven terrain. The extra weight on the tractor helps traction, and the mower casters are less likely to drag or dig in because they are carrying less weight, helping the mower float over the terrain better.
All the best,
Peter