While my bible doesn't address axle seals by themselves, it does show them installed in the axle housing. Held in by 3 screws. Now the bad news. The axle must come out of the housing to get at the screws and seals. The axle is held in place by a snap ring on the inside of the drive gear. To get at this snap ring the whole 75lb brake housing must be removed.(after you remove the tire, ROPS, fender etc) How badly is it leaking? Is it a cosmetic problem on the yellow wheel or is it polluting the ground as it pours out?