×
Description
4226 641 6500 STIHL Plug Screw – Genuine OEM Part
The STIHL Plug Screw (4226 641 6500) is a genuine OEM sealing and fastening screw used in a wide range of STIHL hedge trimmers, long-reach trimmers, Kombi attachments, and battery-powered units. This plug screw is commonly installed in gear housings, angle drives, blade drive gears, and cutter bar assemblies, where it helps seal lubrication points and maintain proper internal lubrication.
A properly installed plug screw prevents grease leakage, contamination, and loss of lubrication, which are critical for long service life and smooth operation of gear-driven components. A missing, damaged, or improperly tightened plug screw can lead to premature wear, overheating, or gear failure.
Manufactured to STIHL factory specifications, this OEM plug screw ensures correct thread pitch, sealing performance, and reliable fit across multiple professional applications.
Product Details
-
OEM Part Number: 4226 641 6500
-
Brand: STIHL (Genuine OEM)
-
Part Type: Plug Screw
-
Application: Gear housing, angle drive, blade drive, cutter bar sealing
-
Condition: New Genuine OEM Part
Function
This OEM plug screw is designed to:
-
Seal lubrication ports in gear housings and angle drives
-
Retain grease within gear and blade drive assemblies
-
Prevent contamination from dust and debris
-
Replace stripped, damaged, or missing plug screws
-
Maintain proper lubrication and component longevity
⚠️ A loose or missing plug screw may cause grease loss, overheating, or premature gear failure.
Verify Fitment (Recommended)
Before ordering, confirm:
-
OEM part number 4226 641 6500
-
Application matches the specific gear housing or angle drive
-
Fitment corresponds to your STIHL illustrated parts diagram
⚠️ Plug screw size and torque requirements vary by application — always verify by OEM part number and torque specification.
Compatibility
This OEM plug screw fits a wide range of STIHL equipment and assemblies, including but not limited to:
Hedge Trimmers (Gear Housing / Cutter Bar)
-
HS 74 (Gear housing, Cutter bar 420 mm / 17")
-
HS 75 (Gear housing)
-
HS 80 (Gear housing)
-
HS 85 (Gear housing)
-
HS 81 R / HS 86 R / HS 82 R / HS 87 R (Gear head)
-
HS 81 T / HS 86 T / HS 82 T / HS 87 T / HS 81 TC-E (Gear head)
Long-Reach Hedge Trimmers / Angle Drives
-
HL 45 / HL 45-D (Blade drive gear – 24.2005)
-
HL 56 K (Gear head 0° – 500 mm)
-
HL 73 / HL 73 K (Blade drive gear)
-
HL 75 / HL 75 K (Angle drive 30° – 24.2005)
-
HL 94 / HL 94 K / HL 94 KC-E (Angle drive adjustable thru 145° – 600 mm)
-
HL 100 / HL 100 K (Angle drive 0° / 30° – 24.2005)
-
HL 145° (Tightening torques)
-
HL 0° / HL 0°-90° (Angle drive configurations)
Kombi & Angle Drive Attachments
-
HL-KM 0° / 30° / 145°
-
HL-KM 0°-90°
-
FH-KM 0°-90° / FH-KM 145°
-
FH 0°-90° / FH 145°
Battery Hedge Trimmers
-
HSA 60.0 / HSA 60.1 / HSA 60.1 SET (Gear head, electric motor, cutter bar)
-
HSA 94 R / HSA 94 T (Gear head)
-
HSA 100.0 / HSA 100.1 (Gear head, electric motor, cutter bar)
-
HSA 130.0 R / HSA 130.0 T (Gear head)
Long-Reach Battery Units
-
HLA 135 / HLA 135 K / HLA 150.0 (Angle drive adjustable thru 145° – 600 mm)
(Exact application depends on configuration and production version — always verify using OEM parts diagram.)
Installation Notes
-
Clean the threaded port before installation
-
Apply grease as specified for the gear or angle drive
-
Install the plug screw and tighten to STIHL torque specification
-
Check for leaks after operation
⚠️ Do not over-tighten. Incorrect torque may damage threads or compromise sealing.
Maintenance Tips
-
Inspect plug screws during routine lubrication service
-
Re-torque to specification if grease seepage is observed
-
Replace damaged or stripped plug screws immediately
-
Use only STIHL-approved grease and OEM sealing components
-
Always follow STIHL torque specifications
