The STIHL Screw Plug – 4226 641 6500 is a genuine STIHL threaded plug designed to seal lubrication, grease or housing ports on compatible STIHL hedge trimmers and long-reach trimmer/brushcutters. Its precision-cut metal threads ensure a tight seal that helps prevent oil/grease leaks and keeps dust, debris, and moisture out of internal gear housings — helping protect key components and maintain smooth operation.

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Key Features

• OEM Genuine STIHL Part – Built to original equipment specifications for correct fit and dependable sealing.

• Metal Construction – Durable against vibration, wear and outdoor environments.

• Sealing Plug – Stops leakage from grease or oil ports and protects internal gear housings.

• Direct Replacement – Replaces worn, stripped or missing plug with an exact match.

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Fits These STIHL Models

This screw plug (4226 641 6500) is used across a wide range of STIHL hedge trimmers and long-reach tools, including but not limited to:

• HS Series Hedge Trimmers: HS 72, HS 74, HS 75, HS 76, HS 80, HS 81 R/RC, HS 82, HS 85, HS 86, HS 87

• HL Series Long-Reach Trimmers/Cutters: HL 0, HL 30, HL 45, HL 56 K, HL 73, HL 75, HL 91 K/C, HL 92 C, HL 94 C, HL 100 (and “K” variants)

• FH / FH-KM Kombi Attachments: FH 75, FH-KM0-90, FH-KM145, etc.

• HSA Series: HSA 94 R, HSA 94 T

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Typical Applications

This screw plug is commonly used to:

• Seal grease ports or gear head access holes on hedge trimmers and kombi attachments

• Prevent oil/grease seepage from gear housings

• Protect internal components from dust, moisture and grit

• Replace damaged or missing plugs during maintenance or repair

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Technical Notes

• Part Number: 4226 641 6500

• Type: Threaded sealing plug / grease plug

• Brand: STIHL OEM

• Application: Gear-head or lubrication port sealing on hedge trimmers and combi tools

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Why Replace This Plug

A missing, worn or stripped plug can allow grease or oil to escape, introduce contaminants into gearboxes, and accelerate wear on bearings and gears. Using a correct OEM plug like the STIHL 4226 641 6500 ensures a proper seal and helps extend the life and reliability of your STIHL equipment.