Hello everyone. I just bought a 2003 honda quad. The registration just says trx250. I am having trouble finding a manual on it. I changed the oil. It has been dripping oil underneath. When I took out the plug, I needed 17 mm socket. The closest manual I could find said it should be 12 mm. Also there was no crush washer. The plug looks like someone replaced it with a fine thread bolt. I put it back in and used a crush washer from my motorcycle. Unfortunately it still drips. I want to order an oem plug and washer but I’m not sure if the 12 mm is right or if the thread would be the same. Any ideas?