Yutacorex Gear Head Assembly for Echo SRM-225 SRM-225i SRM-2620 SRM-3020 - Direct-Fit OEM Replacement, Heavy-Duty

Yutacorex P021046670 is a direct-fit replacement gear head for compatible Echo straight-shaft string trimmers and brushcutters, engineered to restore reliable power transfer and smooth line feeding.

This heavy-duty gear head is designed for Echo models including SRM-225, SRM-225i, SRM-2620, SRM-3020 and a wide range of related straight-shaft trimmers and edgers. It replaces part numbers such as P021008182 and P021053950 and is built to match OEM fitment, so you can swap the worn gear assembly without modifying your tool. Note that this unit does not accept a protective cover; verify model compatibility before ordering.

Will this gear head fit my Echo trimmer model?

If your trimmer is listed among the supported Echo models and serial ranges, this Yutacorex assembly is a compatible replacement. Check the part numbers and serial ranges printed on your original gear head or in your owner’s manual to confirm match. When in doubt, compare the mounting holes and shaft shape to ensure a perfect fit.

• Replaces OEM numbers P021008182, P021053950, P021008181, P021044540
• Compatible with SRM-225, SRM-225i, SRM-2620, SRM-3020 and many SRM/PE series models
• Works with straight-shaft trimmers and some edger variants with listed serial ranges
• Not compatible with models that require a protective cover on the gear head

How hard is it to install the replacement gear head?

Installation is straightforward for anyone comfortable with basic small-engine maintenance. You’ll remove the old assembly from the straight shaft and transfer any necessary retaining clips or shims, then bolt the new gear head into place. Use common hand tools and follow safety steps like disconnecting the spark plug before starting work.

• Requires basic hand tools: wrenches, screwdrivers, pliers
• Transfer any original seals, shims, or retaining parts from the old unit
• Follow the trimmer’s service guide for torque settings and alignment
• Disconnect spark/ignition before servicing for safety

What performance can I expect from the Yutacorex assembly?

This gear head restores the mechanical connection between the engine and cutting head, so expect consistent rotation and proper line feed when installed correctly. The assembly is made to OEM dimensions to maintain factory gear meshing and reduce wobble or vibration caused by a worn unit. Proper lubrication and correct installation improve longevity.

• OEM-dimension design for accurate gear alignment
• Improves smoothness and reduces drivetrain vibration
• Requires correct lubrication and periodic inspection for best life
• Not compatible with protective cover-equipped models

Which parts and serial ranges are covered in the compatibility list?

The listing covers many Echo SRM and PE series machines across specific serial ranges and model revisions. It includes both early and later SRM-310/3100 variants, multiple PE edger versions, and numerous SRM-260/261/311 family members. Carefully review the provided serial ranges in the product details to confirm your exact model version.

• Includes SRM-310, SRM-3100, SRM-311 variants with specified serial ranges
• Supports PE-2400, PE-260 and other edger models within listed SN windows
• Extensive backward and forward compatibility across SRM series
• Always verify your trimmer’s serial number against the item description

Who is this for: This replacement gear head is aimed at homeowners, landscapers, and small-equipment technicians who need a reliable OEM-form-fit replacement for Echo straight-shaft trimmers and edgers. If you own one of the supported Echo models and are experiencing drivetrain slippage, excessive vibration, or damaged gear teeth, this Yutacorex assembly provides a cost-effective route to restore function without replacing the entire tool.