14073 – Trimmer Head Replacement 25-2 (OEM-Spec Equivalent for STIHL 4002-7) The 14073 Trimmer Head (25-2) is a high-quality replacement designed to meet or exceed OEM performance standards for string-trimmer cutting heads. Engineered as a direct fit for STIHL part 4002-7, this replacement trimmer head provides smooth line feeding, durable construction, and reliable operation for a variety of grass-cutting and trimming tasks. Built for both homeowner and professional use, the 14073 trimmer head helps maintain efficient cutting performance and extended service life on compatible rotary string trimmers. Product Details Manufacturer Part Number: 14073 Replacement For: STIHL 4002-7 (OEM trimmer head) Brand: Aftermarket / OEM-Spec Replacement Part Type: Trimmer Head Assembly Feed System: Bump or automatic (model specific; matches STIHL specification) Line Capacity: Up to 25-2 cutting line (number and diameter per STIHL spec) Material: Heavy-duty composite housing with wear-resistant feed components Application: Grass and light brush trimming on string trimmers Function Houses the cutting line and provides controlled feed Delivers smooth line release during operation Supports efficient cutting and trimming performance Helps maintain balanced head rotation to minimize vibration Compatible With The 14073 Trimmer Head (25-2) is compatible with: STIHL string trimmers originally equipped with part 4002-7 Trimmers requiring a 25-2 style head and line capacity Units that use bump/feed or equivalent STIHL trim head attachment Because compatibility varies by specific trimmer model and year, always verify fitment using your equipment’s parts diagram or manual before ordering. How It’s Used Install the 14073 trimmer head directly onto the trimmer shaft in place of the existing head. Typical installation steps include: Turn off the trimmer and disconnect the spark plug (gas) or power source (battery/cordless). Remove the old trimmer head per the manufacturer instructions. Thread or snap the replacement head onto the shaft according to the trimmer’s attachment system. Secure the head using the appropriate nut, bolt, or locking mechanism. Test the line feed operation before cutting to ensure smooth rotation and feeding. Correct installation preserves balanced operation, reduces vibration, and supports efficient trimming. Suggested Maintenance Keep the head free of debris buildup Replace cutting line before it becomes too short or worn Inspect feed mechanism for smooth operation Clean feed ports and spool area periodically The 14073 Trimmer Head Replacement (25-2) is an OEM-spec equivalent built to match the fit and function of STIHL 4002-7, providing dependable line feed, balanced cutting, and long-lasting durability—ideal for maintaining efficient trimming performance on compatible rotary string trimmer equipment.
