Black & Decker 90637808 Guard Assembly – Genuine OEM Replacement 14" String Trimmer Guard

Part Number: 90637808
Category: Outdoor Power Equipment Parts → String Trimmer Parts → Trimmer Guards
Type: Black & Decker 90637808 Guard Assembly – Genuine OEM Replacement 14" String Trimmer Guard

The Black & Decker 90637808 Guard Assembly is a genuine OEM replacement safety component designed for compatible Black & Decker 14-inch string trimmers. Installed around the cutting head, this guard helps deflect grass clippings, dirt, and lightweight debris away from the operator while supporting the proper cutting-line length. Manufactured to original equipment specifications, it provides a direct replacement for a cracked, warped, broken, damaged, loose, or missing trimmer guard.

Key Features & Benefits

• Part Number: 90637808
• Genuine OEM Black & Decker replacement part
• Replacement guard assembly for compatible 14-inch string trimmers
• Helps deflect grass clippings, dirt, and lightweight debris
• Provides a protective barrier around part of the cutting head
• Supports safer and more controlled trimming
• Helps maintain the intended cutting swath
• Ideal for replacing a cracked, warped, broken, or missing guard
• Direct-fit OEM replacement
• Manufactured to original equipment specifications

Technical Specifications

• Part Number: 90637808
• Manufacturer: Black & Decker
• Product Type: String Trimmer Guard Assembly
• Cutting Swath: 14 Inches
• Application: Cutting-head protection and debris deflection
• OEM Part: Yes
• Quantity: Sold Individually

Compatible Applications

The Black & Decker 90637808 Guard Assembly is designed for compatible Black & Decker 14-inch string trimmers that use this specific guard configuration.

Always verify your string trimmer model, type number, cutting swath, mounting configuration, parts diagram, and original part number before ordering to ensure proper compatibility.

Function of the Trimmer Guard

The 90637808 Guard Assembly is a string trimmer safety component used to:

• Deflect grass clippings and lightweight debris
• Provide a barrier around part of the rotating cutting line
• Help protect the operator during trimming
• Support the intended 14-inch cutting swath
• Help maintain proper cutting-line length where applicable
• Protect surrounding components from direct line contact
• Restore the trimmer’s original guarding functionality

A properly installed guard helps reduce exposure to flying debris and supports safe, controlled string-trimmer operation.

Common Signs Replacement Is Needed

Replace or inspect the guard assembly if you notice:

• Guard is cracked, split, or broken
• Guard is warped or distorted
• Mounting points are worn or damaged
• Guard becomes loose during operation
• Line-cutting blade is damaged or missing, where applicable
• Excessive debris is directed toward the operator
• Guard contacts the spool or cutting line improperly
• Original guard is missing
• Improvised or incorrect guard components are installed

A damaged, loose, or missing guard can reduce operator protection and interfere with proper cutting-head operation.

Installation & Service Notes

Disconnect the string trimmer from its power source before installing or removing the guard. Remove the battery from cordless models or unplug the power cord from electric models. Allow the cutting head to stop completely.

Remove the damaged guard and mounting hardware according to the manufacturer’s instructions. Clean grass and debris from the mounting area and inspect the attachment points for damage. Position the Black & Decker 90637808 Guard Assembly in the correct orientation, install the required hardware, and tighten it securely without damaging the guard.

Important: Never operate a string trimmer without the correct guard securely installed. Wear gloves when working near the cutting head or line-cutting blade. Always verify the trimmer model, type number, cutting swath, and original part number before ordering.

Maintenance Recommendations

• Disconnect the power source before inspecting the guard
• Remove grass and debris from the guard after use
• Inspect the guard for cracks, warping, and damaged mounts
• Confirm that all mounting hardware is secure
• Check the line-cutting blade for damage where applicable
• Replace a loose, cracked, or incomplete guard promptly
• Avoid striking curbs, fences, and hard objects with the guard
• Use genuine OEM replacement parts to maintain proper fit and operator protection