Did some pm today on my js400. The steering plate got loose the last time took it out. The circling feature almost was delayed once and I got a little worried. Was able to temporarily tighten enough to keep riding that day.
Thesteering plate was too loose still.
Kawasaki recommends checking and tightening steering after so many hours of riding. The first nut I did no problem, the second same nut use to lock both in place was a trick to tighten down without making the steering plate overly stiff to move. My tech checked steering before putting ski on water and said steering is good and loose. CHECK this adjustment. There appears to be two washers that look semi porous, lightly oiled the steering and these washers , to overcome any inital friction to help ensure self circling starts quickly when off.
Make sure your steering cable moves freely, was it ever oiled w/ light lubricant?. Make sure your handle bar grips are not too large at end , bumping into hydroturf on hull--turn steering both ways w/ pontoon all the way down--simulating ski running w/ rider off. Your steering should turn freely, grips and hydroturf pad should not interfere w/ steering in pontoon down position. Do you have aftermarket parts that interfere w/ steering?
Any Kawasaki techs or engineers that can chime in would be great too.
I'll post reply with my first spring ride on self circling status. I use this feature since where I ski isn't crowded and circling is convenient.
I still not advanced enough to say I don't need this!!!