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The O-ring at the top of the primer is brand new and came with the new shaft and plunger and rubber gasket at the bottom to scoop up the gas. I think I am going to drill out a little hole in the lead shot opening that was used I presume to drill the passage between the primer and the Venturi...

What is the “primer line?” The carb bowl is full of gas and the bottom end of the primer shaft descends into it. As I said once I give the mower a shot of starter fluid it runs like new. This is not a mower with a primer bulb set up. Rather it’s a pump right on the carb.

OK, I've got a D402 model lawn boy. Supposedly it used to be a "commercial model." Recently it had spark and then fuel problems, but now if I use a shot of starting fluid, it runs like a top on the first pull. The problem I have is with the primer pump on the carburetor. According to the LB...

Well I re-cleaned the points though they were new, and I reset the air gap for the coil and I checked the wires for shorts and could still find none, but now I have spark. Perhaps it’s only temporary. The question I still have is this: is a .7 ohms reading in the primary coil normal?

I've got an old push mower on a magnesium base. I've got a D-400 engine on it and it's run well. I think the engine was originally a "commercial engine" but of the D-400 variety. It's been acting up lately and today it just died. The compression is good. I've just gone through the carb and it's...

I'm currently using a LawnBoy that my dad owned. It's from the early 70's a Mag 21. Runs great. Mowed the lawn with it this past week and it ran beautifully.