checking tillison pop off pressure

[Mel Ruffner]

thanks everyone for the help. I,ve added a few more pics of my tillison carb., what does the m stand for on the inlet cover ?also does any inlet needle and seat work in all model tillisons? or do you have to match with model number.Dave thanks for the offer, but I don,t want to trouble anyone, and besides I learning things about carbs that I didn,t know. Just want to make sure I have a gas carb