California gasoline has 10% ethanol, which is bio fuel. The problem with this is that when a scooter or motorcycle, or for that matter anything with a carburetor, sits for awhile, even as little as two months, the carburetor jets get clogged with shellac as the gas evaporates.
There are multiple fuel additives sold to address this issue including Stabil, but I'm not sure that any of them actually work. I would need to see testing or perform my own.
In the meantime, HB Scooters suggests that you ride your scooter once a week for 20 mins to prevent this problem.
-Dave Neighbors, General Manager of HB Scooters
We're a full service motor scooter dealership in Orange County, CA. Expect nothing but the best!