drilling

Has anyone ever tried to drill the main jet on a fixed jet carb? And if so what size did you drill it to, and did you have any success?

or maybe speed? it seems a little restrictive. :grind::grind::hammer::hammer: just a few holes :innocent:

Has anyone ever done this freehand ?? I just bought an 8hp tecumseh w/3/4 shaft for one of my Super Broncs and it isn't drilled or tapped , but I need it to be. I didn't really want to take it apart or take it to the mower shop, so I was wandering if anyone knows the best way to do it. Do they...

I drilled out the main jet in my stock clone carb to .035 which is supposed to be a size 89 or 90 jet size. after I installed the jet back in the engine would not run wide open. It was running very rich puffing black smoke and running rough almost like the choke was 1/2 open. The only mods to...

Hi: I have a new 72 tooth sprocket on order with no holes. I want it to replace an odd-ball 60 tooth that has only three bolt holes. Does anyone know the best way to assure accurate drilling out of the new bolt holes? I guess just align them using the center 1.375" holes in each and trace the...

Hello I purchased a MQ Power JF 200 clone. I had an extremely difficult time starting this engine whether cold or hot. After reading I found that an idle jet drilled to 0.025 is the fix. Here is what I did and the engine starts very easily not and doesn't need choke or gas when warm...