Whirlpool Genuine OEM WPW10395126 Range Vent Hood Rotary Switch.
This part works with the following brands: Whirlpool, Maytag, Admiral, Kenmore, KitchenAid, Magic Chef, Roper, Modern Maid, Estate, Caloric, Crosley, Inglis, Hardwick, Jenn-Air, Sears, Amana, & Norge.
Possible Repair Solution For:

Will not start, fan will not turn, turns too slow, turns too fast.
 
Please Note: This is intended as a guideline only, as other items can cause the same symptoms.