6 Pcs 4008 710 4302 Replacement String Heads for S tihl Autocut 2-2 FSA 56 String Trimmers, String Trimmer Spools Line

What It Is

This is a 6-pack of replacement string trimmer heads and spools designed to fit S tihl Autocut 2-2 and FSA 56 battery-powered string trimmers. They are aftermarket replacements for the OEM part number 4008 710 4302, intended for homeowners maintaining grass and light weeds.

Fitment & Compatibility

Before buying, verify your trimmer model is a S tihl Autocut 2-2 or FSA 56 (check the model number on the trimmer housing or manual). These are aftermarket parts, not OEM, so fit may vary slightly. Measure the spool’s inner diameter (should match 4008 710 4302 specs) and ensure your trimmer uses a bump-feed head. They will not fit older Autocut models or gas-powered trimmers. Check that your trimmer shaft diameter is compatible—most FSA 56 use a 25.4mm shaft, but confirm yours.

Key Things to Know

• Quality variance: At 3.7 stars, some users report the line feeds inconsistently or the head cracks after a few uses. Expect shorter life than OEM.
• Installation: Easy to swap—remove the old head, align the spool, and snap the new one on. No tools needed.
• Line thickness: These spools come pre-wound with 2.0mm line. If your trimmer requires thicker or thinner line (e.g., 2.4mm for heavier weeds), these won’t work well.
• Bump-feed issues: Some buyers find the bump-feed mechanism gets stuck or doesn’t advance line smoothly. You may need to manually pull line after each bump.

Should You Buy It

This is a budget-friendly option if you need multiple spools for light trimming and don’t mind replacing heads more often. But if you value reliability and consistent line feed—especially for frequent or heavy use—spend a few dollars more on the OEM Autocut 2-2 head.