This last week and half I've been trying to figure out what to write to wrap up this thread, but it turns out this tractor isn't done being difficult yet.
I've been running it every day, letting it warm up and then driving around the neighborhood trying to get the engine broken in. I thought I had the RPM range set correctly three times now. I'll have to just describe what's going on.
It starts up ok. It usually takes two tries to get it started. Put it at half throttle. The first time choking it, it starts, runs a couple of seconds and then the RPMs go down until it quits. The second time choking it, its turns over fine. The RPMs stays the same for a couple of seconds, then revs up and stays there but as the engine warms up the revs slowly come back down again.
After this, I take it out for a drive if I throttle it up, even once, and then throttle it back down, the engine doesn't throttle back down to where it was when it started. After it warms up it settles at about 1900 rpm but after throttling up and then down it never goes below 1700 rpm.
After the second time this happened when I got back from the drive, I reset the min RPMs, ending up have to move the throttle cable to do this. The next day, before taking out for the drive, the min and max were fine, but after the drive, it would not go below 1600 rpm.
I'm not sure what to make of this. Is it normal?
Also, how long before a new engine stops excessively burning oil? I know it burns a little oil when it starts up, the more times I start it the faster the smoke goes away. It used to smoke a couple of minutes after starting before, now maybe not even a minute. I have to add about 4 oz every other time it runs. So far this engine has run about 90 minutes all together.
Looking at the pics of 317s on-line shows that some people paint the grill green and some paint it black. What color is the grill supposed to be? Assuming this tractor lasts all winter, I'm going to give a proper paint job in the spring.
I finally got the user manual. I see the creep in neutral is addressed in there. Looks like I'm going to have get the technical manual to figure which of the four types I have and how to fix it but that's probably going to have to wait for spring.