RancherRider

Thanks everybody for being so helpful. A lot of good info. I rode it yesterday for a couple hours and no problems, trying to run some of the fuel out but it hasn't even dropped a bar. I'm going to carry a multi meter with me when I ride it incase it does it again. But it just seems so probable that the previous owner let it sit with ethanol gas in it, especially with toodeep saying that wasn't the original battery. So I just got to know what that fuel filter and pump look like. I'm going to go ahead and buy a new filter and get around to pulling the pump to assess it. Is there a possibility of cleaning the pump? Anybody have a favorite video to goes through the pulling and inspection of the fuel pump?

So just an update for anyone interested. Haven't really messed with it anymore, but did turn the key on without that diode in place and got no power at all. So that tells me it's not why the fuel pump was not coming on. It's something else. Makes me think that once the fuel pump has been running for a while it starts doing this shut down, because the other day once I had let it sit for a minute it started working again. Either that or by taking that diode out it did some sort of reset... idk. Gonna be nice tomorrow so I'm gonna ride it hard and see if I can get it to do it again.

YTX14-BS is the exact battery it listed on the parts diagram, which this one is. I can't be sure if this is the original, but it doesn't seem to lag on the power output at all. No hesitation on starting.

Thank you for the quick replies guys. Here is a picture of what I assumed to be the correct relay, the fuse box where it's located, and the battery. The manual describes the identity of each fuse, but not the black relay. I'll def hit it with the dielectric grease before returning it. From your experience do the relays just die, or do they go in and out before dying? I have a multimeter, I going to look up how to test one, never done it before. I'm just hoping this is what it is, because I'm not real excited about pulling the fuel pump out. Edit: I just found it on a parts diagram and it says DIODE ASSY., THREE WAY (SUMITOMO) 31730-MAS-601. So maybe it's not a relay at all. It listed several other actual relays but did not define them.

So I bought this a couple months ago used with 79 hours on it. Looks brand new. Has run perfect, then yesterday while way out on a trail I started it and hit the gas and just died down. Then crunk right back up but died. I noticed that I no longer would hear the fuel pump prime when I turned the key on. So I went in the fuse box (all fuses were good), and took out the single relay which I assumed ran the fuel pump. So after taking it out fiddling with it and putting it back in, I turned the key and heard the fuel pump turn on, so I jumped on and took off! My question is, is that even the right relay for the fuel pump or was that just a coincidence? Or do you think this ATV is old enough that the previous owner could have left it sitting with ethanol gas in it and destroyed the fuel pump? I have run only non-ethanol through it, but maybe only half a tank so far. I can post a pic of the relay. Thank you