So a buddy had a Polaris 50 predator that he had me work on for him a couple months back. It sat for awhile and just needed the carb cleaned and it ran like a champ. My 4 yr old took to it like a duck to water. He had a trx70 but it was too big for him and he couldn't reach brake levers or foot pegs too well. He never really liked riding due to the fact the Honda was too big. So I decided I needed a Predator 50 and as luck would have it a mint 06 popped up about 30 mins from me so I grabbed it up. His bday was a couple weeks ago and he got a new predator 50. It starts great and runs great when it has a new plug, but it continues to eat plugs.
I am running the factory NGKBRP7 and even tried a couple hotter 6's with no difference. A member on here was nice enough to get me a copy of the factory service manual and the way I read it a #75 main jet is supposed to be stock. My predator has a #77.5, which I highly doubt was added because like I said it is mint and has zero mods. Still had jumper on cdi when I brought it home so I don't think anybody was messing with the jetting. Also when I got on rockymountain to look at jets they have the 77.5 listed as the stock main jet. At first my thought was I needed to just go with the #75 main jet since I thought that was the stock jet, but I'm not sure now that the #77.5 isn't the stock jet.
I've already leaned the needle one clip and that didn't seem to make a difference either, also air filter is clean as new. I'm sure the best bet would be to delete the auto oil injection but if I can fix this another way I'd rather not delete the oil injection. When I change plugs they are black as coal with carbon so it seems to definitely be rich. I tore the carb apart and it looked new clean, I also removed choke plunger and seen nothing wrong with it. Do you guys think dropping the main jet would be the right move or what should I try?
I am running the factory NGKBRP7 and even tried a couple hotter 6's with no difference. A member on here was nice enough to get me a copy of the factory service manual and the way I read it a #75 main jet is supposed to be stock. My predator has a #77.5, which I highly doubt was added because like I said it is mint and has zero mods. Still had jumper on cdi when I brought it home so I don't think anybody was messing with the jetting. Also when I got on rockymountain to look at jets they have the 77.5 listed as the stock main jet. At first my thought was I needed to just go with the #75 main jet since I thought that was the stock jet, but I'm not sure now that the #77.5 isn't the stock jet.
I've already leaned the needle one clip and that didn't seem to make a difference either, also air filter is clean as new. I'm sure the best bet would be to delete the auto oil injection but if I can fix this another way I'd rather not delete the oil injection. When I change plugs they are black as coal with carbon so it seems to definitely be rich. I tore the carb apart and it looked new clean, I also removed choke plunger and seen nothing wrong with it. Do you guys think dropping the main jet would be the right move or what should I try?

