94 trail Boss 250 Master Cylinder?

I have ordered a mc rebuild kit for my 94 Polaris Trail Boss. I am having trouble trying to remove the piston. I have tried compressed air with no movement of the piston. How can one remove the seal that is around the piston. Looking for help in how this piston is removed from the master cylinder.
Appreciate any help for this situation.

Attached Thumbnails

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Name:	Polaris MC piston.jpg
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94 trail Boss 250 Master Cylinder?

I have ordered a mc rebuild kit for my 94 Polaris Trail Boss. I am having trouble trying to remove the piston. I have tried compressed air with no movement of the piston. How can one remove the seal that is around the piston. Looking for help in how this piston is removed from the master cylinder.
Appreciate any help for this situation.

Attached Thumbnails

Click image for larger version

Name:	Polaris MC piston.jpg
Views:	N/A
Size:	47.5 KB
ID:	25297