These are 2 of the parts that have to be modified to build a pulling carb. The hole in the seat(the top piece on the right) has to be bored out larger so more gas can get through it. If you don't make it larger, then, sometimes you will run out of gas when the tractor is under the most load at the end of the pull. After boring the needle it has to be polished on the inside so the needle will not stick closed. The needle is the piece on the top left with the black neoprene tip.
The bottom piece is the discharge tube which mounts in the well of the carb and sticks up into the bottom of the venturi. The gas is sucked up this tube by the vacuum that is created when the engine is running. I bore out the bottom 2 holes 3-5 drill sizes so more gas can be pulled into the air stream that goes into the engine.
These 2 pieces have been modified and are ready to be put in the carb.
Thats all for now!
Southeast Tractor Parts, Carbs for fun times!!
8 hours ago