LiftMaster K45-50676 Clutch-Cover Thumb Screw / Star Knob — CSW200

The LiftMaster K45-50676 is the star-knob or thumb-screw service reference used in the documented CSW200 clutch-cover arrangement. It secures the intended cover connection and must be matched to the installed operator generation and mating hardware. This small component is different from the clutch-release handle, complete cover and internal clutch assembly. Select it after checking the receiving threads and cover alignment, especially when the original knob has been lost or damaged; a replacement screw cannot restore a stripped mounting point or straighten a distorted cover.

Compatibility — Models, Versions and Exclusions

Inspect the Cover Attachment Before Replacing the Knob

A missing or loose knob should prompt inspection of the cover, receiving threads and surrounding mounting features. A screw that repeatedly loosens may indicate damaged threads or a cover that does not seat correctly. Do not force a replacement into a misaligned connection, and do not use a longer screw merely because it catches the remaining threads.

The manufacturer identifies the star knob separately from the cover and operating linkage. Preserve those distinct functions during the repair. The technician should confirm that the cover fits without interfering with the mechanism and that normal service access remains possible. Follow the specified attachment method; a small fastener is still part of restoring the operator’s intended enclosure and guarding arrangement.

Specifications and Product Identification

Before Ordering

• Identify the full operator and clutch-cover arrangement.
• Match K45-50676 in the applicable parts drawing.
• Inspect the receiving threads and cover seating for damage.
• Confirm the supplied quantity and any additional enclosure repair parts.

Package Contents and Separate Requirements

This offer identifies the K45-50676 star-knob / thumb-screw service item. Confirm quantity supplied and any associated retaining pieces in the current package. A complete clutch cover, release handle, lock, clutch assembly and operator are not promised as included. If the receiving threads or cover are damaged, select those components separately rather than expecting a new knob to complete the entire repair.

Safety Warnings — Read Before Installation or Service

• WARNING: Removing an operator cover can expose moving or energized components. Use qualified gate-service personnel when internal access is required.
• Isolate applicable power and secure the gate before removing or restoring the cover. Keep hands clear of the arm and drive mechanism.
• Do not force mismatched threads or leave a cover loose. Repair damaged attachment points and preserve the intended guarding.
• Verify proper cover seating and normal operator safety functions before returning the entrance to use.

Related Products and Important Differences

• LMRRUL monitored photo eye — a separate protection option only where the exact operator and control revision approve it; not a universal legacy retrofit.
• LMWEKITU monitored wireless edge kit — a separate edge communication system for approved controls and resistive edges; not a replacement for this mechanical or electrical service part.

Frequently Asked Questions

Is this the manual-release handle?

No. It is the separately identified star knob / cover thumb screw.

Does it include the clutch cover?

No complete cover is promised in this item.

Can I substitute any screw that threads in?

Use the specified part; thread engagement and seating must suit the documented assembly.

Will a new knob fix stripped receiving threads?

No. The receiving component needs separate inspection and repair.

Need Help Confirming the Right Product?

Contact Garage-DoorParts.com before ordering. Send the full equipment model, readable part labels and photographs of the installed assembly. Include the dimensions, electrical configuration or accessory details relevant to your project so the listing can be checked against the actual installation.