Was just wondering if anyone could give me any clues as to why an 18 horse kohler would start fine and run good but if you shut it off when the motor is hot it will not start again. This is on a friends stock grass cutter, stock motor. He said The only way to get it to restart is to prime it with gas into the intake. Trying to restart the warm engine the right way and all it will do is crank. Thanks for the help.