Overview
This 2-piece arborless bump-feed trimmer head set replaces the factory cutting head on Ryobi and Homelite curved-shaft string trimmers. It is an aftermarket replacement for OEM part numbers 311759011, 311759003, 311759013, AC04156, and 313248002. When your original trimmer head cracks, the bump knob stops advancing line, or the spool housing wears out, swapping in a fresh head restores reliable line feeding and cutting performance.
Key specifications
- Quantity: 2 trimmer heads per package
- Head type: Arborless bump-feed (Reel Easy style)
- Shaft type: Curved shaft
- Replaces OEM parts: 311759011, 311759003, 311759013, AC04156, 313248002
Compatibility
Designed for Ryobi curved-shaft trimmers including the RY4CCS (4-cycle, 30cc), RY252CS (2-cycle, 25cc), CS26, RY28020, and RY251PH; Homelite 26cc curved-shaft models such as UT26CSL3, UT33600, and UT33650 series; and Black Max BM25CS curved-shaft trimmers. Confirm your trimmer model before ordering, as straight-shaft units use a different head assembly.
Installation notes
Remove the old head by pressing the locking tabs on the shaft housing and unscrewing the bump knob counterclockwise. Thread the new head onto the drive shaft by hand until snug, then tighten it firmly. Wind fresh 0.080-inch trimmer line onto the spool following the directional arrow before snapping the spool cover back into place.
Common questions
Q: Will this 2-piece arborless trimmer head fit my Ryobi RY252CS or RY252CSVNM 25cc 2-stroke curved shaft trimmer without an adapter?
Yes, this head is made as a replacement for the Ryobi RY252CS and RY252CSVNM, and it is also listed for the RY4CCS curved shaft model. Since it is an arborless style, it installs to the compatible factory mounting setup rather than using a separate arbor adapter, but it’s still smart to compare your original head and part reference before installing.
Q: Can I use this trimmer head in place of part 311759011 on my Homelite UT26CSL3VNM 26cc trimmer?
Yes, this replacement is intended to substitute for part 311759011 on compatible Homelite 26cc models including UT26CSL3VNM. A good technician check is to confirm the shaft style and head connection match your original assembly, especially if your trimmer has had a previous aftermarket head installed.
Q: What is the best way to install and maintain this arborless trimmer head so it feeds line properly?
Before installation, shut off the trimmer, disconnect the spark plug, and remove any old line or debris from the mounting area so the new head seats fully. For best performance, use the correct line size recommended for your trimmer and keep the head cleaned out after use, because packed grass and dirt can affect smooth line feeding and cause extra wear.
