FasTrak 48 with 21HP Koehler

Gas is good. I took off the carb and blew it out as best I could without totally disassembling it. I do not have a wonderful record on getting them back together in the best of shape. I am thinking to just put it back on and see what the scoop is. Is there anything I should try before putting it back on?
 
that carb is fairly simple to take apart, apart from the fact you need a SKINNY, 1/2" wrench to take off the solenoid.
 
OK. So I took it apart and blew it out and reassembled it. In the process of reinstalling it I found a spring that is about 1/2” round by 1/2” high. I suspect it belongs in the fuel pump and went flying when I accidentally blew the back off the other day. If this is the case, where does it go, between the internal plastic and the rubber bladder flap?
 
The pump. When reassembling, should it be glued together?
 

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I glued it. Reinstalled (air filter off). Tested....no joy on normal start attempt. Added starter fluid....bingo. It runs but is rough. Repeated this sequence with the same results a couple of times So there is still something out of whack. If nothing else I can get it running to put on the trailer to take it to the shop.
 
I glued it. Reinstalled (air filter off). Tested....no joy on normal start attempt. Added starter fluid....bingo. It runs but is rough. Repeated this sequence with the same results a couple of times So there is still something out of whack. If nothing else I can get it running to put on the trailer to take it to the shop.
might need actual caburetor cleaner to clean the carb out.
 
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