My 2001 773 has a bizzar heater motor problem. Intermittantly it will just quit working. In the winter or summer (Northern Minnesota) but seems to be more prevalent in the Winter months. Some days I can start the machine turn the fan on back it out of the shed with a 3 inch drop and the blower will stop never to start again for the entire day. Other times it will run all day with no problems. I have already replaced the fan speed switch. What do you guys think? A relay bad and where? Bad ground or power wire? The machine only has 250hrs. Seems that when the machine is cold and started the fan will always start working but can only guess for how long. Once it quits working I can shut the machine off (warm) restart it but the blower fan will not start again until the machine is shut down and cooled off totally. Any good thoughts out there? Thanks and Best Regards.