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The HUSQVARNA FOREST GARDEN 966674401 is the T25 Tap Advance string trimmer head, a semi-automatic line advancement system designed for gas-powered and compatible electric string trimmers. The T25 uses a tap-to-advance mechanism, meaning the operator bumps the head against the ground to feed additional line without stopping the machine. This trimmer head is a direct OEM-style replacement unit suited for professional landscapers and groundskeeping crews who demand reliable, consistent line feed during high-volume trimming work.
The T25 Tap Advance head is well suited for residential and light commercial landscaping applications. It is commonly installed on Husqvarna-branded string trimmers that accept the T25 head mounting standard. Typical use cases include turf edging, perimeter trimming around obstacles, and general vegetation management in both open and tight spaces. This SKU ships in a package quantity of 6 units, making it practical for shop stock, fleet servicing, or wholesale distribution.
Designed as an OEM-style replacement trimmer head for compatible Husqvarna string trimmer models that accept the T25 head mounting configuration. Verify the trimmer model accepts the T25 head before ordering.
Installation of a trimmer head should be performed by a qualified outdoor power equipment technician or experienced operator. Disconnect the spark plug wire or remove the battery before servicing any rotating trimmer components. Thread the head onto the trimmer shaft according to the trimmer manufacturer torque and thread-direction specifications found in the unit service manual. Always load trimmer line according to the line diameter and length ratings specified for the T25 head to avoid feed issues or head damage during operation.
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