I have about 1200 miles on my '08 SXV 550, engine s/n #5300 something. I decided to check my rear cylinder valve lash (seemed to be the quickest to get to without draining anything). Anyway this is what I found! It looks like a very fine layer of the cam lobe surface is eroded away or peeled off. Hard to tell. I'm referring to the "crack looking thing on the nose of the lobe. It can be felt by fingernail, it is not just visual. Only on that one lobe. I have not opened up the front cylinder, but now will do so as well. I am thinking of running it some more and showing the dealer the pics as I have 4 yr warranty. Something tells me they may not be interested in it until it blows up. Maybe check it again in 500 - 1000 miles. What do you all think??
Next question. The inlet lash was fine. The exaust lash is .003 and .004 which is a little tight. Should I leave it for now? If not, can I slide out the pivot shaft and reset the lash without taking everything else apart?
Thanks for any help with these items. Cal or Amauri, I would appreciate your comments if you read this. Thanks.