Kerlista gearbox assembly for Ryobi trimmer fit, smooth operation and easy replacement.
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Kerlista

Kerlista Replacement Gearbox Assembly 308210009+309562007 for Ryobi, Homelite, Craftsman & More

High-performance patio lawn and garden made for confident daily results

$33.13

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Why customers choose Cera Garden

Overview

Restore smooth operation and steady cutting with the Kerlista replacement gearbox assembly. This kit combines a rugged gearbox and a ready-to-use trimmer head, designed to work with a wide range of string trimmers from Ryobi, Homelite, Craftsman, MTd and other brands. Built for durability and precise fit, the parts are machined for reliable engagement and consistent performance through everyday yard work. Expect a refreshed feel with improved line feeding and reduced hesitation when starting a new cut, all without promising guaranteed results since real-world outcomes depend on your tool’s overall condition and proper installation.

What’s in the box

  • 1 Gearbox assembly
  • 1 Trimmer head

Key specifications

  • Replacement part numbers: 308210009 / 308210002 / 308053004 / 984244001
  • Teeth: 10 teeth
  • Shaft: M8 x 1.25 LH, square shaft
  • Thread length: 0.59 inches
  • Nut adapter: 5/16 inch right-hand

Fitment and compatibility

This gearbox is designed to fit a broad spectrum of Ryobi, Homelite, Craftsman and MTd trimmers. If the aluminum tube on your tool has an outside diameter near 25.4 mm, this assembly is likely compatible. Always verify your model’s shaft size and thread type before swapping to ensure a smooth install.

Real-world use and feel

When installed, the gearhead delivers a solid, precise engagement between shaft and head. The rugged housing and well-machined gears offer a reassuring heft, while the included trimmer head helps maintain consistent line advancement. In practice, users notice smoother feeding during edging, fewer interruptions for worn parts, and a more predictable cutting experience across varying vegetation.

Installation tips

Prepare with basic hand tools and follow your tool’s service manual. Remove the old head, align the square shaft, and secure with the 5/16 inch right-hand nut adaptor. Always disconnect power before servicing and confirm compatibility with your specific model to ensure the best results.

FAQ

Q: Is this gearbox compatible with Ryobi, Homelite and Craftsman trimmers?

A: Yes, it fits a broad range of models; verify your shaft size and thread type before installation.

Q: What is included in the package?

A: One gearbox assembly and one trimmer head for a quick replacement.

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