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Scooters - 125 to 300 => People s200 => Topic started by: quochuy on November 08, 2022, 01:27:49 PM

Title: Front brake stopped working after changing fork oil
Post by: quochuy on November 08, 2022, 01:27:49 PM
So I followed the other post to change my fork oil but for some reason after putting all back together the front brake stopped working. The brake lever is all soft and would travel all the way towards the handle bar. It does apply a tiny amount of brake but I could still move the wheel by pushing it a bit.

What’s happened?
How can I fix this?

Thanks
Huy
Title: Re: Front brake stopped working after changing fork oil
Post by: Iahawk on November 08, 2022, 02:06:09 PM
sounds like you have air in the system (or you somehow lost your brake fluid?). I would bleed your front brake to make sure the air is out and it's full of fresh fluid. Make sure you didn't somehow loosen your banjo bolt or bleed nipple on caliper.

Bleeding the brake requires separating the front headlight cover to access the front master cylinder. 4 screws and 2 small bolts down on either side must be removed, along with the front turn signals (unbolt them and move them out of the way).

The headlight cover remains fixed, the rear part that includes the instrument panel is what will be pulled back toward you, exposing the brake master cylinder. I'm sure there are some threads detailing this process.

Lots of knowledgeable folks on this forum to provide help.
Title: Re: Front brake stopped working after changing fork oil
Post by: quochuy on November 09, 2022, 07:32:44 AM
Hmm trying to access the master cylinder but cannot get the cover out
Title: Re: Front brake stopped working after changing fork oil
Post by: quochuy on November 09, 2022, 10:55:32 AM
All good now. Bleeder the system. Brakes are working now
Title: Re: Front brake stopped working after changing fork oil
Post by: Neil955i on November 09, 2022, 11:31:16 AM
All good now. Bleeder the system. Brakes are working now

Well done, good to read!
Title: Re: Front brake stopped working after changing fork oil
Post by: Iahawk on November 09, 2022, 12:56:55 PM
Great to hear! Separating the headlight covers is one of the more difficult jobs with this particular scooter.

My fork oil change improved the ride significantly. Did you notice a big difference?
Title: Re: Front brake stopped working after changing fork oil
Post by: quochuy on November 10, 2022, 03:54:21 AM
I only had to separate the dashboard and the cover it's attached to. I had to unscrew the speedometer rod out of it to be able to move it out enough to access the master cylinder. Definitely more challenging the process to change the fork oil.

When I changed my stock rear suspensions with YSS ones, I did notice the stock ones were old and were very hard to push down while the YSS were very smooth.
When I removed the fork suspensions, they seemed quite smooth already so I was sceptical that changing their oil would help with anything but I did it anyway. The oil that came out was all black and stinky so it's a good thing anyway. However, when I went for a test ride, it did improve it, going on small bumps on the road would jerk the scooter up while it's a lot smoother now. Will be definitely better for the wrists as well. Worth the effort.
Title: Re: Front brake stopped working after changing fork oil
Post by: Iahawk on November 10, 2022, 01:21:19 PM
yes, the fork oil change makes such a big difference for such a small cost and amount of work. It made my scoot enjoyable to ride, again.

What YSS shocks did you get? Do you have a part number? I don't recall hearing of anyone changing their rear shocks on this scoot. Feel free to post a picture of your scoot with the new shocks, I'd love to see that!
Title: Re: Front brake stopped working after changing fork oil
Post by: Neil955i on November 11, 2022, 08:04:25 AM
I’ve now switched to YSS shocks on two of my scooters Hawk and found it to be beneficial on both occasions!
Title: Re: Front brake stopped working after changing fork oil
Post by: quochuy on November 11, 2022, 11:57:44 AM
It was YSS 40028 with a length of 330mm.

Next time I change them, I'll go for a gas one, maybe their G-Sport.
Title: Re: Front brake stopped working after changing fork oil
Post by: Iahawk on November 11, 2022, 01:49:32 PM
good looking scooter! I see you have the non US, led tail light, where are you located?
Title: Re: Front brake stopped working after changing fork oil
Post by: Stig / Major Tom on November 12, 2022, 04:44:56 PM
A 200 with a kick start ?!?

I didn't know they made those.

Stig
Title: Re: Front brake stopped working after changing fork oil
Post by: Iahawk on November 13, 2022, 01:44:00 AM
A 200 with a kick start ?!?

I didn't know they made those.

Stig

yep, mine has it, too. I think the carb'd bikes have kick starts?
Title: Re: Front brake stopped working after changing fork oil
Post by: quochuy on November 14, 2022, 10:31:30 PM
good looking scooter! I see you have the non US, led tail light, where are you located?

I'm from NSW, Australia.
Title: Re: Front brake stopped working after changing fork oil
Post by: Iahawk on November 14, 2022, 10:40:49 PM
I'm from NSW, Australia.

welcome to the forum! (not sure if we've given you a proper welcome?)

One of my favorite youtube moto vloggers is Danny Hayes (aka The Million Dollar Bogan). He lives in Melbourne and has ridden various bikes all over Australia. I always enjoy seeing the different parts of Australia, beautiful country!
Title: Re: Front brake stopped working after changing fork oil
Post by: quochuy on November 14, 2022, 10:41:16 PM
Took her out for her first real ride (25min one way) to a local cliff by the ocean. The work on the suspensions was all worth it. No back pain so far.
Title: Re: Front brake stopped working after changing fork oil
Post by: quochuy on November 14, 2022, 10:43:12 PM
welcome to the forum! (not sure if we've given you a proper welcome?)

One of my favorite youtube moto vloggers is Danny Hayes (aka The Million Dollar Bogan). He lives in Melbourne and has ridden various bikes all over Australia. I always enjoy seeing the different parts of Australia, beautiful country!

I don't think I did introduce myself either 😱.
Anyway, thank you :-)

I'll check Danny's channel out.
Australia is indeed a beautiful place.
Title: Re: Front brake stopped working after changing fork oil
Post by: Iahawk on November 14, 2022, 10:48:40 PM
great pic of your scoot! I've always been partial to red vehicles. Our resident photographer, Stig, would approve of the pic!
Title: Re: Front brake stopped working after changing fork oil
Post by: Stig / Major Tom on November 15, 2022, 02:28:20 AM
Wonderful photo!
 Big big fan of night shots!
Also, envious of your absence of light pollution in your night sky!
Curious....taken with what camera, or cell phone?
Please keep shooting..and posting!

Stig
Title: Re: Front brake stopped working after changing fork oil
Post by: quochuy on November 15, 2022, 03:31:09 AM
Wonderful photo!
 Big big fan of night shots!
Also, envious of your absence of light pollution in your night sky!
Curious....taken with what camera, or cell phone?
Please keep shooting..and posting!

Stig

Thank you :-D
Oh the light pollution was there, just not in that direction. Behind that hill in the background is the Pacific Ocean.
The shot was taken on an iPhone 13 Pro, disabled flash, let the camera app switched to slow shutter (3 seconds). To stabilise the shot, I rested the side of the phone against a lamp post.

Here the view 90 degrees to the left.