I have a 1974 Sears SS16 with a twin Onan and I want to take the carb apart to clean it and replace the float with a brass one. And I would also like to take the fuel pump apart and replace its gaskets and diaphragm. I had a couple questions since this is my first GT and my first time taking a carb apart. I have watched some videos and it seems pretty simple but I want to make sure I'm not missing anything. The motor is model number BF-MS/2666c if that helps.
-As far as replacing the gaskets and the float, its seems to be pretty much "screw off, replace, screw back on". Nothing too intricate or needing any specific tuning. Is that correct?
-Someone recommended I might want to replace the high speed jet while I'm at it. What exactly is that? I have a diagram of all the carb and fuel pump parts in the tractor's manual but it doesnt list that part.
-This tractor has been very well kept but it has been sitting for at least 3 years. Are there any other parts in the carb I should replace when I take it apart?
-Lastly, where would you recommend I find the carb gaskets, brass float, and fuel pump gaskets? I can buy a carb/fuel pump repair kit from Sears but its $273 and it has other parts in it like the float valve assembly and the valve plate assembly for the fuel pump. That's a little pricey since I don't know if I even need those 2 parts. I was just planning on doing the gaskets, diaphragm and float and see how it does.
-Ok, I have one more question but its off topic... My manual says you should change the oil when the engine is warm. Since its been sitting for years, do I really want to run it to get the oil warmed up? I was thinking it would be best just to drain it and change it before I even start it once.
Any advice is much appreciated!