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Scooters - 50cc => Agility 50 => Topic started by: kingblc on June 24, 2020, 12:36:24 AM

Title: Master Cylinder question
Post by: kingblc on June 24, 2020, 12:36:24 AM

Hello, 
I am new to scooters and have a 2014 Agility 50.  I noticed the diaphragm looking thing on the front seems to be damaged.  What is this thing, and is this a concern?  I have attached a picture with an arrow pointing to what I am talking about

Title: Re: Master Cylinder question
Post by: CROSSBOLT on June 24, 2020, 01:23:49 AM

That is a "sight glass" to let you see what the quantity of brake fluid is inside.

Title: Re: Master Cylinder question
Post by: kingblc on June 24, 2020, 01:27:39 AM

Thank you.  So it being damaged is a bad thing.  I'll have to replace that right away. 

Title: Re: Master Cylinder question
Post by: eamartin on June 24, 2020, 02:05:13 AM

Damaged in what way?  Is it cracked?  Is it leaking?

Title: Re: Master Cylinder question
Post by: kingblc on June 24, 2020, 02:59:21 AM

It is cracked, and looks like it was pushed in.  It is wet around the area, but not leaking.

Title: Re: Master Cylinder question
Post by: eamartin on June 24, 2020, 11:24:25 AM

It could get worse and begin leaking.  If it's not leaking and your brakes are working it would seem you are okay.  Loss of fluid will of course lead to braking issues.  And if brake fluid drips on a painted surface the paint will be damaged.  Some manufacturers list a replacement sight glass for the master cylinder.  Kymco does not show that part as available (only the complete master cylinder).  Keep an eye on it.

Title: Re: Master Cylinder question
Post by: mumof7 on October 03, 2020, 04:33:44 AM

I have the same problem on my 2015 agility..the viewing window has completely disintegrated....looks like a whole new master cylinder.  :-\