I thought I had seen this issue discussed on this forum but a "search" turned up no results.
Merle,
Search on brake shudder. I had the same problem on my 2010 about 12k miles and fixed it
by installing Galfer rotors. Dealer said Kawasaki knows of no front rotor problems.
Mick
If cleaning doesn't help put a dial indicator and check TIR.
If runout exceeds the service limit, replace the disc.
Disc Runout
Standard: TIR 0.15 mm (0.006 in.) or less
Service Limit: TIR 0.3 mm (0.01 in.)
Mine indicated a TIR of .22
All I did was clean mine with some spray brake cleaner.
Pay particular attention to the buttons that attach the rotor to the carrier.
The rotor should be able to move sideways slightly.
I clean mine about every 10,000 miles and have 44,000 miles on the original rotors with no pulsing since the first occurrence.
Who's your dealer Merle?
Mine were replaced just a couple weeks ago. I have been fighting with mine for a year now. But I took a 8 thousand mile trip through ALL kinds of weather from 33 to 112 degrees. Mine warped because my calipers weren't releasing all the way. I am certain that's what it was. I spent about two hours in California at a NAPA store trying to get them to stop dragging. I never did get them to completely release. I didn't want to break down the calipers and have to bleed the system in a parking lot, bikes loaded, and baking in the sun.
The local Kawi dealer wouldn't even discuss it. He gave me a piece of sand paper and suggested I 'rough' up the rotor. I kept the sand paper, and knew he was cracked. Two days after I got home, the dealer had it. Replaced the warped rotors under warranty.