I own the tractor that Eric posted about above. I in the past year have replaced both ignition modules. If you park your tractor in a shed where even the remote possibility of mice is present be very sure that one has not built a nest on top inside the shroud. It can be a bit hard to check but a mirror will allow you to see up in there. I had mouse problems last year and those little chisel toothed buggers had the wires all chewed up there. Just a couple of weeks ago I had to replace the second module and also replaced both spark plugs too. I used mine to vac leaves and it seemed to work fine. Mine has always been a bit hard to start if shut off after use and sits for more than a few minutes. If your engine starts to run rough and one cylinder misses and then comes back, suspect the module. Changing the module requires a bit of tear down behind the engine but is not so hard to accomplish. Set my flywheel clearance at 9 thousandths. Keeping the engine fins clean also helps with heat problems. It is amazing how much crud collects on them. Also be sure the screen around the drive shaft at the rear of the engine is kept clean also as that is the air supply. Another situation with these tractors is be sure to have it running at half throttle or better when you shut it off. Shutting it off at low speed or idle can cause it to blow a head gasket. But then you already knew all that.
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