[Lifetime Warranty] Chain Tensioner Kit 1123 007 1000 Adjuster Nut Kit - Compatible with 019T 021 023 025 MS210 MS250 MS230 Chainsaw - Replacement 1123-007-1000 11230071000 Adjuster Tensioner with Bar Nuts

Chain Tensioner Kit 1123 007 1000 Adjuster Nut Kit

Key Features

• Complete assembly for precise chain tension adjustment.
• Includes tensioner screw, slide, and required mounting nuts.
• Constructed from durable materials for reliable operation under engine vibration.
• Engineered for consistent fitment and mechanical alignment.

Replaces / Cross-Reference Part Numbers

• Stihl: 1123 007 1000
• Stihl: 1123-007-1000
• Stihl: 11230071000

Compatibility & Fitment

• Stihl Chainsaws: 019T, 021, 023, 025, MS171, MS180, MS181, MS190T, MS191T, MS210, MS211, MS230, MS250.
• Stihl Electric Saws: E160.
• Verify your specific model serial number prior to purchase to ensure compatibility.

When to Replace

• Difficulty adjusting chain tension or the adjustment screw spinning freely.
• Visible stripping or wear on the tensioner screw threads.
• Binding or failure of the tensioner slide to move the guide bar.
• Missing or damaged mounting hardware that prevents the bar from being held securely.

Installation Tips

• Ensure the chainsaw is turned off and the spark plug wire is disconnected before servicing.
• Clean the bar mounting area of wood chips and oil debris to ensure smooth slide movement.
• Lightly lubricate the tensioner screw threads to reduce friction during adjustment.
• Align the tensioner pin carefully with the hole in the guide bar before tightening the side cover nuts.
• Do not overtighten, as this may damage the adjustment mechanism or lead to excessive chain wear.