I'm not religious about saving this crap. If I remember then I toss the old ones in the bucket. I don't know why. Many just end up in the trash can on the other side of the bench and as I look at this pic I realize how stupid it is to be saving these. I think I'll empty the bucket tomorrow.
Here is the bucket of carbs. What makes a carb bad and not rebuildable? Here is my rule of thumb. If a carb won't prime and it's not the fault of the purge bulb, fuel lines or filter, then it gets tossed in the bucket. These carbs have check valves in them that get plugged or damaged. When I say damaged, many times it's from someone using compressed air to "blow out" the passages. Many times they blow out these check valves ruining them and then you have a carb that won't prime or run right. A carb kit doesn't usually come with new check valves so rebuilding is a waste of time. Besides that when you add the cost of a kit and labor, it is cheaper to just replace. In the pic below is a black Murray(MTD) trimmer. It's getting a new $19.99 carb. You just can't rebuild them for less.
Today the boss walked up to my bench and asked me if I could do something for him when I got caught up.
I told him I'd do it for him now because I didn't know when I'd get caught up and I was leaving for vacation the third week of august either way. This mess is just the "in progress" pile. Yep.