I APPLY MECHANICAL MANUAL NISSAN TIIDA 2009

Hello:

I just bought a 2009 Nissan Tiida (Mexico), but after three weeks, the clutch pedal started acting up; it seems the system is losing pressure. I'd like to see the owner's manual because the dealership says they have to drop the transmission, and I want to understand what they're going to do and if this will cause future wear and tear on the clutch system and the transmission itself. Hopefully, someone has this information. Thanks.