What was found
LEFT MAIN GEAR DOWN INDICATOR LIGHT DOES NOT ILLUMINATE WITH GEAR DOWN AND LOCKED. GEAR EMERGENCY EXTENSION KNOB PULLED AS PRECAUTION. FOUND GEAR INDICATION LIGHT BURNED, REPLACED LIGHT BULB, PERFORMED OPERATIONAL CHECK GOOD. RESET BLOW DOWN BOTTLE AND PNEUMATIC OVERRIDE VALVE, JACKED AIRCRAFT AND BLED HYDRAULIC GEAR SYSTEM, PERFORMED GEAR SWINGS ALL CHECKED GOOD. WORK DONE IAW CESSNA 750 CHAPTER 32-00-01 AND 32-60-00.