Panari SRM 225 Speed Feed 400 Trimmer Head for Echo Straight-Shaft | Quick Line Changes, Bump-Feed Compatible

Panari SRM 225 Speed Feed 400 is a drop-in replacement trimmer head designed to fit many straight-shaft Echo-style string trimmers, offering quick line changes and reliable cutting performance.

Whether you're maintaining a professional fleet or upgrading a home unit, the Panari SRM 225 Speed Feed 400 trimmer head provides a practical alternative to OEM heads. It’s built to accept standard bump-feed lines and is compatible with a wide range of Echo and similar straight-shaft models when paired with the correct bushings and mounting hardware.

Which trimmers will this Speed Feed 400 work with?

The Panari Speed Feed 400 fits many straight-shaft string trimmers from Echo and other brands that use the same mounting pattern. It’s commonly used on Echo SRM and PAS series machines and also suits models from Honda, Husqvarna, Maruyama, RedMax, Shindaiwa, and some Stihl trimmers when the shaft and thread match.

• Direct Echo compatibility: SRM210, SRM211, SRM225, SRM260, SRM261, SRM2100, SRM2400 series.
• PAS series support: PAS210, PAS211, PAS225VP, PAS231, PAS260, PAS261, PAS265, PAS266, PAS280, PAS2100, PAS2400, PAS2601.
• Fit note: designed for straight-shaft models only; not for curved-shaft trimmers.
• Bushing requirement: 10mm x 1.25 left-hand long bushing often required for proper fit.

How do I install the Panari SRM 225 head on my trimmer?

Installation is straightforward: remove the old head and transfer the original nut or replace it with the supplied nut as needed. If your machine used a different nut, simply swap the nut from the old head to the Panari head so the threading and locking match your model.

• Remove spark plug and follow safety procedures before working on the trimmer.
• Unscrew the old head and fit the Panari Speed Feed; use the original nut if it fits.
• Attach required bushing (10mm x 1.25 LH) when specified by your model.
• Ensure guard clearance and torque nut to manufacturer recommendations.

What replacement parts and part numbers correspond to this head?

The Panari SRM 225 speed feed is offered as a compatible alternative to several Echo part numbers and common OEM references. If your machine calls for a specific shield or bushing, order those parts separately to complete the installation.

• Replaces Echo part numbers such as 99944200907 and 99944200902.
• Also compatible with legacy references like 78890-30000, 78890-11000, 78890-18001, 78890-18000.
• Echo users may need shield p/n C550000032 in some setups.
• Confirm you have a straight-shaft trimmer and the required bushing before purchase.

Why choose this aftermarket Panari replacement instead of an OEM head?

The Panari Speed Feed 400 offers a cost-effective option for trimmer owners who want quick line replacement and broad cross-brand compatibility. It retains the functional benefits of bump-feed heads while being an economical spare or upgrade for compatible machines.

• Lower-cost alternative to OEM while maintaining similar bump-feed convenience.
• Works with standard trimmer lines and common mounting standards.
• Easy to install by swapping existing nut or using the included hardware.
• Suitable for both home users and maintenance crews with compatible machines.

Who is this for: The Panari SRM 225 Speed Feed 400 is ideal for homeowners, landscapers, and rental fleets that use straight-shaft Echo or Echo-compatible trimmers and need a fast, reliable replacement head. Choose this when you want a dependable bump-feed head, cost savings over OEM parts, and straightforward installation — just verify shaft type, thread direction, and any required shield or bushing before ordering.