Hi guys, first off, great site! I have a Husky 4818 with a Briggs and Stratton 18 HP. I just got it last month. It ran great but he had the choke rigged because the cable is frozen up. So, I unrigged it, and got the cable working. Yes, I am fully open on the choke. Anyway, mowed great, put it up, 2 weeks later, I go to start it this morning. It starts fine, and I go to mow, and when I kicked the blades on, it black smoked and is running rich. It wont run very well, but when I kick the blades off, it clears up. I undid the cable and zip tied the choke wide open and no difference. It looked like a nightmare to pull the carb, since the bolts come in from the back. Can anybody tell me what is going on? Thanks.