14-11-12, 08:49 PM
I was answering the question about the need to replace both seals if only one is leaking. If it isn't leaking it leave it alone. Fork seals usually leak for a reason. Impact, pitting fork legs, stone chipped fork legs or seal inners rusted are the usual reasons. I am still on my first day seals after 73000miles, certainly at your low mileage you should not have seal problems.
Is there any sign of impact damage anywhere on the bike. I was on bike run some years ago and the bike behind me went down on gravel in a corner and when he rode it home one for seal started to leak. When we stripped we found the seal on the side it fell on was slightly deformed yet the other was perfect.
How soon after the replacement did the seal leak??? If it was immediate then it is one of two things the seal has the incorrect inner diameter of the seal was put on dry over a pitted section of the fork leg which damaged the inner seal lip. If it was after a 50 or more miles then it is most likely a problem with the fork leg. I would suggest that you inspect the fork leg closely to ensure there is no surface damage. If necessary remove both legs clean them with something non abrasive (I always use a soft cloth soaked in WD40) and compare them. check for pitting in the area between the yolks where the yolks clamp and pitting & stone damage between the dust cap and the yolk. If all is ok replace the leaking seal and dust cap with genuine yamaha ones preferrably(this will rule out dodgy seals).
Good Luck
Is there any sign of impact damage anywhere on the bike. I was on bike run some years ago and the bike behind me went down on gravel in a corner and when he rode it home one for seal started to leak. When we stripped we found the seal on the side it fell on was slightly deformed yet the other was perfect.
How soon after the replacement did the seal leak??? If it was immediate then it is one of two things the seal has the incorrect inner diameter of the seal was put on dry over a pitted section of the fork leg which damaged the inner seal lip. If it was after a 50 or more miles then it is most likely a problem with the fork leg. I would suggest that you inspect the fork leg closely to ensure there is no surface damage. If necessary remove both legs clean them with something non abrasive (I always use a soft cloth soaked in WD40) and compare them. check for pitting in the area between the yolks where the yolks clamp and pitting & stone damage between the dust cap and the yolk. If all is ok replace the leaking seal and dust cap with genuine yamaha ones preferrably(this will rule out dodgy seals).
Good Luck