While I have the tank off the GL650 to replace the petcock and deal with the weepy valve cover gasket, I thought I'd check clearance on the valves. But, I'm not finding the spec in the FSM.
The service schedule in the GL650 addendum points to page 3-7 in the GL500 section. Are the specified clearances the same as the 500? I had thought they were different.
There is no excuse for anyone on this forum not having the FSM for any of these bikes when they are in the Wiki and on Motofaction and I am a big believer in teaching people how to find the answer instead of handing it to them.
Randall is pretty good at looking things up but couldn't find it. I told him where to look so he will know for next time.
On my high mileage engines I found they run quieter at 3 thou and 4 thou , never have had a valve tighten up but usually find a exhaust valve a couple of thou loose . It would be safer of course to go to 4 and 5 if you have a freshly rebuilt or extremely low mileage motor as in parts will be seating in and ocassionly take up the clearance, happy riding