I’m in agreement with MichealR. Bought one new – really expensive compared to the two strokes – and has given no trouble at all. Not over-worked but just keeps going. In fact, I bought another – a second hand one at an auction – because I fancied the twin handled type to compare with the ‘hoop’ type. I now tend to leave the (expensive) chain saw attachment on one and the strimmer/brush cutter head on the other. Now over-kill, ‘cos we gave up the 3000m^2 patch (we rented) last year.
I bought a large reel of square nylon strim which lasts well but needs winding on carefully for auto feeding.
Both are straight shaft machines – I would not entertain a bent shaft machine. I have two-stroke machines – cheaper generators and pumps, post hole borer and the Mantis cultivator (a good machine, but I wish I had bought a 4 stroke variant). Messing about with two stroke oil is a pain. Apart from the power to weight ratio, I prefer 4 stroke engines any, and every, day of the week.
Edited By not done it yet on 01/07/2021 19:27:29