On last few rides, the starter motor engaged upon applying front brake. First I thought the starter cut-off relay or starter button is stuck closed. Removed the relay and pulled on brake, the starter turns over. And it was intermittent at that.
Checked wiring diagram and the scooter. And I found the problem was with the newly installed automotive-starter solenoid. The coil was finding a ground source through inner casing and mounting bracket. So, I made sure the solenoid is insulated.
Now, no more problem.
Couple of days ago, I went to a gas station where supposed be selling ethanol free gas. There are faded flags at the station advertising it. Rode up to the pump with 5 gallon tank strapped. The pump has a placard saying it ha 10% of ethanol. ???? WTF. I should have gone inside and ask for detail. But I figured "well, regular gas has been OK so why change?". I left the station and went to Costco for less expensive gas.