Originally Posted by Yachtie
Where can I find the diaphragms?
Look at your carbs. The round, dome part on top holds the diaphragm. Undo the 4 screws SLOWLY. There is a spring under there that will push the top off. I usually hold the carb top down with one hand and remove the 4 screws with the other. Then slowly let the spring push the top up and remove it. Look at the diaphragm and how it fits in the carb body. The outer lip should seat in a grove and the diaphragm will have an indexing mark on one side that will fit in a corresponding grove. Make sure you see this, you'll need this info to reassemble correctly. Other than that, lift it out and take a look.