Neighbor is out mowing his lawn, once in awhile he runs his tractor through my yard and mows my lawn... in exchange I run my snowblower across his driveway to break up the plow-bank during the winter.
I'm listening to the mower run here this afternoon while playing with my mill-lathe-drill... Trying to figure out if I can face-mill stuff with it or if it's "beyond" the ability of the machine I think I got it figured out for the most part. More on that later.
Mower is making that laaaaaaaaaaaaaawn moooooooowweeeeerrr sound then all of a sudden BANG *HOAKR* BANG BANG *sputter* DIE *silence*
I run outside and see the neighbor waving huge clouds of smoke away, and I grab the CO2 thing assuming the worst. By the time I got over the smoke was clear and he's got the hood up.
Long story short, this model has a plastic fuel pump that consists of a couple of diaphragms, springs and a pressed in check valve thingy. Over time the plastic body cracked in such a way that the engine flooded though the "suction drive" port, resulting in a spectacular engine shutdown.
I help him get the thing into the garage, he starts draining the oil out and I'm looking at the pump... he's draining the oil out I'm looking at the pump. I put the pump down to help him with the heavy oil pan, then I pick up the pump again... and it happens: "Teh Machinist" kicks in. "I can make this."
Hour later I present him with an aluminum version of the faulty part, sans crack. Reassembled the pump with the original springs diaphragms and valve.
Engine is up and running again making that wonderful lawnmower sound. Just for giggles I looked up the cost of a replacement part at the local Engine Shop, $55 dollars plus labor... and that just gets you another plastic bauble.
I bet if I put my mind to it I could duplicate the rest of the pump out of aluminum (not just the damaged part) and it would outlast the rest of the tractor.