Yamaha TDM 900 проблема со стартером

There is a problem, when starting engine, sometimes starter don't work. In doing so all electrical equipment (even clock on dashboard) are switching off. But after the second attempt to start engine - engine will start properly. (Battery is ok) I have assumption, that problem may be with starter. For example brushers are worn out or something else. I decided to do take off the starter and resolve the problem. But during the solving of this problem I got some new troubles :) 0:00 Problem description 2:30 Starter unmounting 4:52 Disassembling of starter 13:54 Starter mounting and testing 15:50 Troubleshooting 24:10 Conclusions