What was found
AIRCRAFT IN BASE MAINTENANCE: RIGHT HAND NUMBER 2 SLIDING WINDOW EXTERNAL HANDLE FAILS OPERATIONAL CHECK. WINDOW UNLOCKS BUT DOES NOT SLIDE OPEN FREELY WHEN EXTERNAL HANDLE IS PULLED. REMOVED AND REINSTALLED FIRST OFFICER NUMBER 2 SLIDING WINDOW. PER B737MAX AMM 56-12-11, ACCOMPLISHED SATISFACTORY ADJUSTMENT OF SLIDING WINDOW AT THE VERTICAL POSITION OF THE WINDOW ASSEMBLY, PER B737MAX AMM 56-12-11. ACCOMPLISHED SATISFACTORY OPERATIONAL CHECK OF THE EMERGENCY EXIT EXTERNAL RELEASE, PER B737MAX AMM 56-12-11. ACCOMPLISHED SATISFACTORY PRESSURIZATION LEAK CHECK OF FIRST OFFICER NUMBER 2 SLIDING WINDOW, PER B737MAX AMM 05-51-91.