Motorcycle Questions? Ask a Mechanic.
Hello, what year model is it? Is it the engine with three carbs and blue paint on engine?
Thanks, it's most likely the fuel pump is faulty. On this model it's basically a rubber diaphragm that's operated via vacuum. If you've checked all hoses going to it for cracks or breaks then the diaphragm is most likely faulty, which is very common.
Polaris discontinued this pump and what I've found works better than gambling on used pumps is to purchase the Mikuni kit and retrofit it in. I'll post a link to it here.
If it's been sitting for a while and the fuel was not ethanol free or treated ethanol, I would recommend pulling the carbs and having them rebuilt as well.