I have 2 kawasaki td40 for the farm. I just had 1 unit rebuilt myself, it got worn clutch, bearings and piston rings.. For 5yrs of use, Its best value for the money and its very easy to rebuild too,parts comes in kit. You could replace the strings of any size that would fit the holder, strings are cheap from the fishing supply..

I also have a goat. They are choosey, luvs to eat the mangoes but doesnt want the cogon. I use metal blades for thick shrubs but its best practice to uproot by using the plow before de- weeding.