King Cutter 4' mower

Trying to compare what "other" KK's will do is pointless, as most brands build several quality levels of rotary cutters. Aparently yours is light duty.

Robert

I wound up buying a heavier well used Bush Hog brand chopper for about same money as new KK, my property is severely overgrown and I grind up some pretty big stuff, bush hog is now super-well used but still doing the job

if you indeed stick to grass or 1 inch or less twigs and keep a proper shear pin in, you should get lots of use out of that KK machine

get into the rocks or big stuff and I think you will wind up needing a gearbox

That said, I let my grass get fairly high and have had no problems with the machine. I have only replaced the belt once....if you get a limb or debris into the belt then expect short life. If you keep the ground speed set to match the mowing conditions you should have no problems mowing grass. When the grass gets a foot or so I switch to my shreader....small weeds are no problem, but if your considering small tough weeds much taller than a foot or so you might be better off with a shreader.....