NicholasM20

I needed to use it as my engine runs rough near the ocean, that’s when the cable broke when I pulled on it…

The connection is fragile, just a bolt and nut to squeeze the steel cable to secure to the lever arm. Why couldn’t the design be more like throttle/mixture/prop where it’s secured, considering this is a critical component to prevent carb icing…?

Thanks! A local A&P helped me out by reconnecting it like this post. The cable was broken, so it's a bit short, thus the valve didn't open all the way (to allow carb heat to get out) when carb heat is off. The fix worked and was able to fly home safely. Will need to replace the cable.

Aircraft left at the airport and rented a car to drive 4 hours home Yesterday when I used the card heat at 5500ft, i could pull the control rod in the cockpit out more than it used to, but engine runs fine and landed safely. Did a quick test, carb heat no longer affects RPM. Opened up the side cowling and found the problem...the cable is no longer connected to the level arm.. Looking at the O360 doc online, although not the same setup, looks like the cable is passed through the level arm bolt and bend 90 degrees, and tighten the bolt. I’d like to find an A&P and address it, a couple options: 1. as simple as passing the remaining cable through the bolt to secure it and bend 90 degrees 2. or somehow safety wire the carb heat lever arm to make the butterfly valve open all the time, so i can fly home to fix it I would appreciate if you have other thoughts and suggestions!

(First time lurker posting after recently bought my first M20C) The trim switch recently became stiff to toggle and got stuck. Took some time to took it off and disassembled it. Turns out the 2 toggle switches are 7105 C&K SPDT switches. 7105P4D9ZQE is the exact fit but it's not available on Mouser/Digikey. 7105P4YZQE is the next close enough switch that are in stock and can be shipped immediately! Eagerly waiting for it to arrive This is the datasheet for anyone who likes to learn more. On the disassemble process, attached some images with some key components, the 4 small screws can be removed using T5 screwdriver. Figured I'd share this info for anyone who'd like to avoid buying the entire expensive switch! Cheers Nicholas