· To do the Prime and cap test, start by pulling the vacuum line off at the intake port on the carb, and blocking it, and the line that connects to it coming from the petcock (Note: just pulling the line will create a HUGE vacuum leak. Prodigy: An expert who has answered questions. ATVs Expert. Answers. Re: Where does the vacuum line on a Arctic Cat go to from the carb - . · Just about all vacuum petcocks have a position labeled "prime". You can bypass the vacuum function by using this setting. Next time the fuel stops flowing, put the petcock in the "prime" position. If you see the fuel start to flow, then your problem is likely in the vacuum line or the diaphram. Read full answer.
Just take apart the diaphragm assembly on the back of the petcock switch the spring to the opposite side of the diaphragm so the spring holds the diaphragm open. Make sure that your vacuum line is re-connected to the proper port on the petcock, or just cap it off with a vacuum cap. Enjoy our tutorial? Support a small business! Check out our Patreon for more content!www.doorway.ru donation helps us make more. Bret Tkacs with Puget Sound Safety explains how motorcycle manual and automatic (vacuum operated) fuel valves work. He also explains the difference between o.
Aug If so, how? The petcock that came with the BIKE had 3 outlets - 1 for gas to carbs, 1 for vacuum to right side carb that connects. Feb Your bike tho', do what you think is best. I just do what Bob suggested. Operate the petcock occasionally, run the tank down into the reserve a. The petcocks purpose is to prevent fuel flow from the fuel tank to the motorcycles carburetors. They have this in part because motorcycles spend a large chunk.
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