How can I manually open my garage door from the outside?

To manually open your garage door from outside when opener fails or power is out and you need access, you need emergency release that disconnects door from opener, though outside access is limited without special lock. If you have an emergency release kit installed, which is a keyed lock cylinder on outside of garage door with cable attached to opener's emergency release cord, insert key, turn, and pull cable to release trolley, then lift door manually from outside. If you don't have outside emergency release kit, you may need to enter garage through side door to access inside emergency release cord, which is red cord hanging from trolley, pull it down and toward door to disconnect, then lift door manually. If you have no side door and opener is locked, you may need to call locksmith or garage door professional to gain entry without damaging door. For security, install emergency release kit costing 20 to 40 dollars if you don't have one, as it allows outside manual opening during power outage. Once released, lift door with both hands from bottom, as door may be heavy if spring is broken, and prop open with vice grips on track to prevent closing. To re-engage opener, pull emergency cord toward opener or run opener until trolley reconnects with door arm. Always ensure door is fully closed before re-engaging to avoid damage. If spring is broken, door will be very heavy and may require two people to lift safely.