1. Introduzione
This manual provides detailed instructions for the installation, operation, and maintenance of the ECHO Speed-Feed 400 Universal Trimmer Head (Model 99944200907). This genuine ECHO replacement part is designed for efficient line loading and reliable performance. Please read this manual thoroughly before use to ensure safe and correct operation.
2. Informazioni sulla sicurezza
ATTENZIONE: la mancata osservanza di queste istruzioni di sicurezza può provocare gravi lesioni.
- Indossare sempre occhiali di sicurezza per proteggere gli occhi dai detriti volanti.
- Wear long pants and sturdy shoes to protect your legs and feet.
- Be cautious of the trimmer's line to avoid cut hazards. Keep hands and feet away from the rotating head.
- Ensure the trimmer engine is off and cooled before performing any installation or maintenance.
- Refer to your main trimmer's owner's manual for additional safety guidelines specific to your power tool.
3. Contenuto della confezione
The ECHO Speed-Feed 400 Universal Trimmer Head package includes:
- One (1) ECHO Speed-Feed 400 Universal Trimmer Head (Model 99944200907).
- Pre-loaded with .095 inch diameter Cross-Fire trimmer line.
Note: Adapter bolts or additional hardware may be required for specific trimmer models and are not always included. Please check your trimmer's manual for compatibility and required mounting hardware.
4. Configurazione e installazione
Proper installation is crucial for safe and effective operation. Always consult your trimmer's owner's manual for specific instructions regarding trimmer head replacement.
- Preparare il trimmer:
Ensure the trimmer engine is completely off and cooled. Disconnect the spark plug wire to prevent accidental starting.
- Remove Old Trimmer Head:
Follow your trimmer's manual to safely remove the existing trimmer head. This usually involves locking the shaft and unscrewing the head.
- Install Speed-Feed 400 Head:
Align the new Speed-Feed 400 head with the trimmer shaft. Depending on your trimmer model, you may need specific adapters (not always included). Thread the trimmer head onto the shaft securely. Ensure it is tightened according to your trimmer's specifications.

Image 1: The ECHO Speed-Feed 400 Trimmer Head, top view with line extending from both sides.
- Verifica installazione:
Gently pull on the trimmer head to ensure it is firmly attached and does not wobble. Reconnect the spark plug wire.
5. Istruzioni per l'uso
5.1. Loading Trimmer Line (Speed-Feed System)
The Speed-Feed system allows for quick and easy line loading without disassembling the head.
- Allineare gli occhielli:
Rotate the trimmer head until the arrow on the top aligns with the eyelets on the side. This positions the internal spool for straight-through line feeding.

Immagine 2: Lato view of the ECHO Speed-Feed 400 Trimmer Head, illustrating the line exit points. This image shows the side profile of the trimmer head with the orange line visible.
- Inserisci riga:
Take a length of .095 inch diameter trimmer line (approximately 20 feet for a full load). Push one end of the line straight through one eyelet and out the opposite eyelet until an equal amount of line extends from both sides of the head.
- Linea del vento:
Hold the trimmer head firmly. Rotate the knob on the top of the head clockwise to wind the line into the spool. Continue winding until only about 6-8 inches of line extend from each eyelet.
5.2. Operazione di rifinitura
Once the head is installed and line is loaded, operate your trimmer according to its owner's manual. The Speed-Feed 400 head is designed for efficient cutting and line advancement.
- Avanzamento di linea: To advance the line, tap the trimmer head gently on the ground while the engine is running at operating speed. The centrifugal force will feed out more line.
- Tecnica di taglio: Use the tip of the line to cut. Avoid digging the head into the ground, which can cause excessive wear and line breakage.
6. Manutenzione
- Pulizia regolare: After each use, clean the trimmer head to remove grass, dirt, and debris. This prevents buildup that can hinder performance.
- Ispezionare per danni: Periodically inspect the trimmer head for cracks, excessive wear, or other damage. Replace the head if it shows signs of significant wear or damage.
- Tipo di linea: Use only .095 inch diameter trimmer line as specified. Using incorrect line sizes can damage the head or affect performance.
- Magazzinaggio: Store the trimmer head in a clean, dry place when not in use.
7. Risoluzione Dei Problemi
| Problema | Possibile causa | Soluzione |
|---|---|---|
| Line does not feed out |
|
|
| Eccessiva rottura della linea |
|
|
| Trimmer head wobbles |
|
|
8. Specifiche
- Modello: 99944200907
- Marca: ECO
- Tipo: Universal Trimmer Head
- Diametro della linea: .095 inch (Cross-Fire line pre-loaded)
- Colore: Nero
- Compatibilità della fonte di alimentazione: Gasoline-powered trimmers (check your trimmer's manual for specific compatibility)
9. Garanzia e supporto
For warranty information or technical support regarding your ECHO Speed-Feed 400 Universal Trimmer Head, please refer to the documentation provided with your original ECHO product or visit the official ECHO webluogo. Conserva la ricevuta di acquisto per eventuali richieste di garanzia.
For further assistance, contact ECHO customer service.