I've got a late eighties JD 165 lawn tractor with a Kawasaki FB460V 12.4hp engine. It will only start IF you prime it with a little gas or starting fluid. Once running, it runs fine and stays running. However, once shut off it will not start again without a prime of fuel. It's been suggested that the choke is the problem. IF it were the choke, wouldn't that be irrelevant in the situation where the engine is hot from running? If it were the fuel pump, then I'll assume it wouldn't stay running like it does? Anyone have any adjustment procedures for the carb/choke? Looks like the choke is automatic. Thanks for any help.