This project has reached the point where a
lot of little things need to be addressed. The engine had not been running for some ten years so its no surprise it was reluctant to just start and run as if that kind of down time was without consequences.
First, the reason I parked it all those years ago was its appetite for ignition modules. At $200 Cdn a pop, it was getting expensive to replace them!
Now, with internet shopping I'm able to replace a module for about 30% and I found out the cause - two plugs gapped at .030 firing at the same time is the same as one plug gapped at .060. Running at full throttle for two or three hours while mowing and you get an overheated module with a greatly reduced lifespan. I've reduced the gap to .020 to mitigate this and will experiment with even smaller gaps till I find that "sweet spot" that allows the engine to run smoothly at mid to high rpm's with normal power output.
Second, the valves were not closing enough to create proper compression at first so that even with a new ignition module and fresh sparkers, it refused to start. That eventually cleared up and I got it to run for a few seconds if I primed the carb with a few tablespoons of fuel. Turns out the pulse type fuel pump, another weak link which is a carb - mounted setup, needs a complete rebuild. Time to convert to low pressure electric fuel pump. I "borrowed" one off another garden tractor try it.
Third, Found out the 12 volt feed from the ignition switch no longer functioned reliably. It was more off than on, so, another internet shopping spree. By the time I get the ignition switch and fuel pump, the hydraulic hoses I have on order should be all hooked up. Then I hope to finally get everything tested for the first time.
I have all but one of the hoses hooked up. That last one needs an adapter to complete the circuit. Hope to have it tomorrow. I drove the backhoe out of the shop yesterday and took some pix.
That long pin will be shortened after I determine how I'll attach the chains if needed for helping with dumping out sticky clay that wants to stay in there.