My bike crossed over 48K miles a couple of weeks ago. I did the easy maintenance items last weekend and saved the big stuff for today.
Drained the coolant at the drain plug, looks like the bike is taking a piss:
Removed the section of coolant hose containing the radiator cap:
Still a lot of crap in the way:
Next removed the coils and tied them back out of the way. No need to disconnect any wires, but good idea to number the plug wires:
Disconnected and tied back the Pairs and Crankcase vent hoses
Used tie wraps to tie back misc wires and hoses that were kinda hanging loose in the way...pretty clear now.
Pull the cover to reveal some blood n guts:
Checked the valve clearances using the procedure in the service manual:
Here's one that's easy to see (#1 Exhaust)
Now the bad news
#2 Intake was on the tight side at 0.004" (Spec is 0.006" +/- 0.001"). This means I had to remove the intake side camshaft and re-shim. Not as bad as it sounds. First I removed the camshaft retainer:
Then the camshaft, and the shim bucket for #2 Intake with the bad reading
Usually the shim will stick to the bucket, so remove it carefully to keep from dropping it into the engine:
Measured the shim that was pulled out at 0.079" wanted to open it up to the high side of the clearance, so the formula in the manual gives you 0.076" for the new shim. New shim installed:
Cam shaft re-installed:
I rechecked the clearances and they were all the same except the bad one was 0.007" which is the high side of the range like I wanted. This is a very opportune time to replace your spark plugs: This is how easy it is to get to #3 with all the crap out of the way:
Iridiums with 16K miles on them:
Valve cover back in place. It helps to prop it up an inch or so, to put some sealant into the half moon areas, then drop it and bolt it up:
Put the hoses, coils, etc back in place, filled up the cooling system, and buttoned everything up. It's always satisfying when it fires right up after having it torn apart. Ran it for a few minutes, topped off the coolant, changed the oil, and a quick wash and she is ready to ride.