I hope this is how I post. Ok...I have a Briggs engine 125K02-0281-E1 03082559, anyway, I replaced the bottom seal , leaking on blade, . Now, I try to Start it and it won't unless I use starting fluid, just a 1/4th Spray, not a lot, it starts easily then and Runs great. I cleaned the carb, replaced the primer bulb and gasket between filter box and carb,(it pumps Fuel in the carb with 1 pump). I changed the "0" ring connecting the carb to engine, suspecting an air leak. once it is started it will start every time as long as it is hot, (like killing it in thick grass). it starts easily, 1/2 pull. It will not start on "Gas" when it is a cold start. to me, it's like it won't ignite on gas, but does on "Starter fluid".(BTW, a new plug too, tried CJ8, 14,19 seems to make NO difference). HELPPPPP. How do I find my Reply?.. New here and Having problems posting and recieving answers.