Safety first: Unplug opener before adjusting. Do not adjust torsion springs unless you are a trained technician.

Steps to resolve:

Check door movement by hand: Pull the emergency release and lift the door manually. If it is heavy or stops before fully open, the springs may be weak or broken. Contact a garage door professional for spring replacement.
Inspect tracks and hinges: Look for bent track, loose hinge bolts, or damaged rollers. Tighten loose hardware and replace damaged components.
Lubricate moving parts: Apply a silicone-based or garage door lubricant to metal rollers, hinges, and the torsion spring (lightly).
Adjust up travel limit: On the Motorlift opener head, locate the UP travel adjustment screw or digital setting. Increase the up travel so the door opens fully without hitting the stop bolt.
Adjust up force (if available): Slightly increase the UP force setting, following the Motorlift manual. Do not exceed recommended settings.
Test operation: Reconnect the trolley, restore power, and run a full open/close cycle, watching for smooth travel.

Garage door will not open fully or stops partway; opener light flashes four times.

Possible Causes