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Hello Scooter Doc Community,

my name is Phil and I just signed up because I experienced really weird issues with my front brake today.
Quick Fact: I bought this 150cc scooter last week. The lady I was buying it from told me that she had the scooter at a mechanic and he checked/fixed everything there before selling it. Everything is documented so I guess that's correct. However, she also said that her mechanic told her that the brake cylinder needs to be replaced soon. The main brake cylinder for the front break (located on the right handle bar). I did a test drive, everything felt smooth. The front end however was a bit shaky, I thought of the brake cylinder and didn't really bother much more.

So today I took the scooter on my way to work and after I filled my gas tank, the front brake felt like it would lock a little bit. After a little while, it went from bad to worst and it literally locked my front wheel. I could feel it when I was taking off from standing, I had to accelerate a lot in oder to get it going. Also, the brake on the handle bar was not usable anymore. It was stiff as a piece of solid metal. That moment I felt I can't go any further and so did my scooter. I was rolling when suddenly the front wheel just locked completely and I was sliding over my front wheel and put that baby down.

After getting my scooter back to my apartment, I ordered a brake cylinder but I still don't exactly know if that was the issue. I checked on the break fluid (opened the box where the fluid is in, fluid looks clean, good and also on a good level), opened the screw at the bottom of the break to get any sort of air out, closed it again and also checked the brake disk + brake lines. all of that looks good to me. The only concern I found was that the brake disk looks pretty close to the part where the brake pads are in. I don't know if that should be this close tho. I can make a picture for you guys if you think it's worth checking.

When I had the scooter at home, I used the brake a bunch of times and then tried to move the wheel. It was really hard to keep the wheel going so I realized I still have the same issue. After opening the brake lines and putting everything together again it at least looks like the wheel doesn't lock up anymore if I use the brake a bunch of times and then spin the wheel.

I'm not sure if it's the cylinder or if something's not right with that little space I have between brake disk to that part where the brake pads are in. I hope anybody of you can help me out here

Thanks a lot for your time and can't wait to hear your opinions.