Sorting the little tractor mower out. The 'go' peddle was only working, when it was almost at the limit of its travel, but strangely - the biting point seemed to vary.
So drop the cutting deck down, release it, then heave the tractor over, onto its right-hand side. Rolled onto its left, oil spills into the carb, and fuel leaks out the fuel tank.. Took the opportunity, to blow all the grass cuttings from the entire under-side, with the compressor - it makes it so much easier to see what's going on.
Exploring that, I spotted that two of the three PTO clutch bolt nuts were absentia, so I took the clutch off, to find that was metal on metal, with the three bolt heads, once welded to the plate, completely adrift - they have the clutch springs on them. Welded the three back in their holes, cut some clutch friction material from some gasket material, superglued that, to a plate, then after struggling to match the two missing nut threads (USA mower), then reassembled the PTO, refitted, and check the PTO drive locked up when the lever was turned - it did.
Next, I found a spring flapping about loose, which was supposed to tension the drive for the deck, the end of which had snapped, so heat up the end, to soften it, and form a new loop.
Then finally investigate why the 'go' peddle was near the bottom limit of its travel, before the tractor would move. It uses two belts for the drive - one from engine to mid-point, where the DAF type variable speed pulley is located. Then a second one, to drive the diff, at the rear. The first belt, had two opposing pulleys, one of which was attached to the 'go' pedal. Press go, and the pulley tightens the belt, release and the belt just slips on the engine pulley.
Both belts looked OK, I couldn't find any reason for the go peddle needing to be pressed so far down, but I did find an adjustment between the pedal, and the pulley, set at near maximum length, so I shorted that.
Next I have to reassemble it all, and test it - I'm just taking a break indoors, from the heat out there...
[EDIT] Just finished the reassembly, and it works absolutely fine. I also learned a bit of a trick, for more easily getting the heavy citting deck back in place....
Do all the mechanical connections first, then finally put the drive belt on the PTO pulley - pulling against the spring, and turning the engine pulley. Much easier way..
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