You go to servicing
next to the brake fluid reservior
From the factory yes it would have a hydraulic clutch ! If not it has been modified at a later date .
Yes. Hydraulic pull type
mazda doesnt rx7 anymore :(
Clutch master cylinder might be blown out. this is located in the engine bay, the top right.
The Mazda Rx7 has the Wankel Rotary Engine in it
Go to www.banzai-racing.com , it will tell you how to get the error codes and what they are.
Check for bad clutch master cylinder or slave cylinder.
R134a just like all newer cars