Yes, you can manually lift your garage door if spring is broken that normally counterbalances door weight, but it will be very heavy and requires caution and assistance, as broken spring makes door weigh 150 to 300 pounds without counterbalance. To manually lift door with broken spring, first disconnect garage door opener from door by pulling emergency release cord, which is red cord hanging from trolley, down and toward door to disengage trolley, allowing manual operation without opener resistance. Since spring is broken, door will be heavy, so you need at least two people to lift safely, standing on each side of door, lifting evenly from bottom edge with legs not back to avoid injury, as door can cause strain. Lift door slowly and keep it level to prevent it going off-track. Once door is lifted to open position, you must prop it open securely with ladder, clamp on track, or locking pliers to prevent it from falling down rapidly, as without spring door will not stay open and can slam down causing injury or damage to car or person. Do not leave door unattended in open position without securing. To close door, lower slowly with help, controlling descent. Do not use automatic opener to lift door with broken spring, as opener will strain and may fail or gear strip. Manually lifting with broken spring should be temporary to get car out until professional replaces spring costing 200 to 400 dollars for single and 300 to 600 dollars for pair, as operating with broken spring is unsafe and can cause cables to break.
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