- Apr 17, 2007
I own a 1999 YZ125. I just changed the gearbox oil for the first time since I bought it. I drained it and filled it up to the check bolt until it started seeping out and tightened it. I went on a ride and when I got back I noticed oil up under my fender and on my swingarm. I checked to see where it came from and it was coming out of the transmission breather tube. I let a little oil out and went on another ride and it did the same thing. It does it everytime I go riding. The oil level seems to go down. What do I do?