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- 5910 890 2306 – STIHL Carburetor Adjustment Screwdriver (Service Tool)
Description
5910 890 2306 – STIHL Carburetor Adjustment Screwdriver (Service Tool)
The STIHL 5910 890 2306 Carburetor Adjustment Screwdriver is a service tool designed for controlled access to carburetor adjustment points on STIHL outdoor power equipment. It is commonly used during routine service and maintenance procedures.
Featuring a narrow shaft and specialized tip, this tool allows proper engagement with recessed carburetor adjustment screws found on various STIHL handheld equipment, including chainsaws, trimmers, and blowers.
Key Specifications
- Part Number: 5910 890 2306
- Tool Type: Carburetor adjustment screwdriver
- Tip Style: Flat head (narrow profile for recessed access)
- Handle: Ergonomic grip for controlled operation
- Function: Provides access to carburetor adjustment screws
- Application: Service and maintenance use
Compatibility
Suitable for use with a wide range of STIHL equipment, including:
- Chainsaws (e.g., MS 170, MS 180, MS 250, MS 391)
- Trimmers and brushcutters (e.g., FS 56 RC-E, FS 91 R)
- Blowers (e.g., BG 50, BR 600)
- Other STIHL handheld equipment with compatible carburetor adjustment screws
(Always refer to your equipment’s service manual for proper procedures.)
Important Notice
This tool is intended for professional service use. Adjustment of carburetor settings and emissions-related components should be performed in accordance with applicable regulations and manufacturer guidelines.
(Always refer to your equipment’s service manual for proper tuning procedures.)

