I have a Scotts mower 16HP 42" cut. It is a Kohler command engine. I have been jumping it off for some time without any problem however it is now shutting down shortly (seconds) after disconnecting the jumper cables. As mentioned earlier I have been jumping the mower off for probably over a year and it would run fine. Wondering if this might be a carburetor/fuel issue as it is idling a little rough or worn safety switch?