This is accomplished with the depth control of the tiller. Most if not all have a feature that allows depth to be regulated in about 1" increments
Most should do it, some easier than others, but ts certainly within the spec of a garden tiller
Should also present little problems, might be a bit rough to start, but it would be no worse than unbroken packed soils
See #1 above
Dependss. There are some tillers out there that do not have wheels that have any drive ability. You have to hold back against the machine, and use a sprag that digs in to help hold it, and let the tines pull forward and let them dig in. STAY AWAY from these back breakers, they are trouble and not worth the hassle if they were giving them away for free. Some machies are forward rotating tines and some are couter rotating. Does not make too much difference to me which way they operate, except for at the end of a row, one will make a depression the other will not, other than that they both do a good job of tilling. The machines weight and the drive wheels are what holds the machine in place and sets the pace for tilling. The tines buck the motion of the wheels, and in the process till up the ground, with little need to hold the machine back or help push it forward.
same principal as forward rotating tines, they work against the drive and hold the machine in place at the pace set by the speed selected.
I would not call a Troybuilt a super tiller, there are others out there cheaper that work just as good and some even better. But even if it does not have a PTO and the ability to disconnect the tiller portion and install another attachment, you can always disengage the tiller tine drive and attach a snow blade or make a hitch and pull a wagon etc. Just look at it as a sort of 2 wheel tractor with limitations.
I have an Atlas brand 8hp tiller that is built just like a Troy built pro model horse, but new it cost me only $695.00 at the local co-op. It can do what a Troy built does, has all the same features and at better than 50% of the cost of a Troybuilt. Its easy to work on if need be, tills up to 8" deep, has a hiller / furrower attachment and uses tines that look just like Troybuilts. It has proven to be trouble free in the years I have owned it (about 5 so far) Prior to this I bought a Troybuilt horse, pro model, and had lots of problems with reverse engage and belt slipping, then the Kohler magnum 7hp motor started to skip and miss, and I found out it had a broken cam shaft. All this i only 1 year of ownership. I sold it, and bought the Atlas, and its just been great. Never had the first glitch or problem, and I normally plant a 75 x 150 patch, plus use it to do a multitude of odds and ends, like drag a shank to make a ditch to lay wire or pipe in etc. Honda and BCS both make great tillers as do others. Just look for a unit with drive wheels, and don't worry if their gear or enclosed or chaian drive. They all work fine, and will last with reasonable care. My Troy had to be a lemon, but it was enough to turn me off of any further troybuilt products.
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