I always have the service manual within reach, but it didn't touch on the removal or installation. It might've been feasible if I had removed the reed block as well. The fact that you've never had to do it speaks for itself as to how great these old 175s are. They are my favorites. I have one from 70, 71, 75,and 76. And I am ALWAYS in the market to fill in the missing years. I also have a 77 which turned out to be a Frankenstein bike with an MX125 engine. Oh well. Nothing is exempt from my Yamaha Rescue Shelter. 🤓