743

[bahmi]

Do any readers know where to start when fixing a heater motor? Mine on the 743 is not working. Detailed infomation is appreciated. thanks, all Mike

 

[thetool]

First, check fuses in your dash. One is for the start circuit, the other is for everything else.
I think there's an in-line fuse and relay in an add-on harness for cab heat under the cab-check that.
Then, your motor is inside the box to your left as you sit in the seat. If you remove the cover, you can probe wires going to your switch and motor.
I usually see the switch unplugged or worn out before I see a bad motor.
Good Luck