I have a liquid cooled F935 front mower diesel and an F525 front mower 17 hp Kawasaki gas air cooled. They crank, they start, they move, they hydrostatic, they cut grass really well, they are fun to operate, they tow my Woods leaf vac very well, they run up ramps onto trailers, they fire on all cylinders, new fuel filters from JD dealer, mower clutch works, use a 15/16 socket with breaker bar to remove blade bolts, use Loktite 767 anti-seize when reinstalling, sharpen my own blades, don't use gas with ethanol (especially with the diesel), don't cut hay or run a baler with them, have 72" and 48" decks, use gator blades, have good glow plugs and spark, tires hold air, use ear muffs, have run out of fuel a few times, never bled the injector pump or carburetor, belt flat spotted once when I hit a brick, don't use the discharge chutes, and finally, I read the manuals occasionally when I get constipated.
Now what part of this spewing ain't working for you?