I did my homework. Found a thread on here that said the oil plug threads for a 87 trx250r should be m14x1.25. I ordered a plug for my wheeler and it didn’t fit. Mine is smaller. I also tried a m12. Didn’t fit. I don’t have any taps that size otherwise I would have tried running a tap through it to determine the size. Any ideas what size plug I need to get? I wouldn’t be going through all this trouble but my wheeler didn’t have an oil plug in it when I bought it. Thanks for any help.