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In Reply to: Re: JD 316, Onan B43E, will not start posted by Bill on Thursday, November 19, 2009:
Bill,
The fuel pump is vacuum operated.
One thing you can try is to take the fuel line running from the fuel pump to the carb. off of the fuel pump and take a small funnel (if you don’t have that small of a funnel take a plastic water bottle, and poke about an 1/8” hole in the cap and squirt the fuel in the fuel line) and pour fuel into the line to charge the float bowl of the carb. It should hold about a quarter cup of fuel.
Try starting the engine without priming the carb with fuel. If it doesn’t want to start try priming the carb with a cap full of gas as you did before and see if it will keep running until it uses all the fuel that you put in the carb through the fuel line (at least a minute maybe longer). The idle circuit in the carb is the first to get plugged so keep it about half throttle.
I am not in favor of a lot of additives but if you get a can of Sea Foam (this stuff cut’s gasoline varnish and is not harmful to hoses or engine components) available at most parts stores and mix it with the gas you are using, you might get lucky and not have to disassemble and clean the carb.
Good luck.
I will keep checking if you have any questions.
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