Fuel selector switch (pointer) removal

[rwiseman]

I am replacing the fuel selector  placard that is under the selector knob in the floorboard between the front seats of  a 82 J.  That requires that the selector switch be removed from its shaft. What holds the knob  on the shaft?  Is that a pin, an Allen screw, or what?  The service manual shows a vertical screw going through the knob into the shaft.  That is not the case here.  It is something else horizontal through the shaft and extremely small.  
Thanks. 
 

[rwiseman]

Self-answered.  Amazing what ChatGPT AI comes up with.

”In the 1982 Mooney M20J, the fuel selector knob is secured to the shaft using a set screw that is often a small Allen head or hex screw. Here’s a more detailed breakdown of how it typically works:

    1.    Knob Design: The fuel selector knob has a hole or a recess that fits over the selector shaft. The knob is usually made of a durable material like metal or reinforced plastic.
    2.    Shaft: The selector shaft has a flat side, which provides a surface for the set screw to press against. This flat side prevents the knob from rotating freely on the shaft and ensures positive engagement.
    3.    Set Screw: The set screw is inserted through a threaded hole in the knob. When tightened, the set screw presses against the flat side of the shaft. This creates a frictional hold that keeps the knob securely in place. The set screw is usually tightened using an Allen wrench or hex key.
    4.    Installation and Removal: To install the knob, you align the knob hole with the shaft and tighten the set screw until it is firmly against the shaft. To remove or adjust the knob, you loosen the set screw, allowing the knob to be repositioned or removed.

If you need to replace or adjust the set screw, ensure you use the correct size and type of screw specified in the aircraft’s maintenance manual to maintain the integrity and safety of the fuel selector assembly.”

[Fly Boomer]

I thought I just read this.  Is MooneySpace serving up the same post multiple times when requesting "next unread"?