1. Produto acabadoview
The Stihl Brush Knife 300-3, part number 4119 713 4100, is a genuine Stihl OEM replacement blade designed for heavy-duty clearing applications. This 3-bladed knife is specifically engineered for thinning and removing tough, tangled grass, scrub, and thorny bushes.
Uso pretendido: This brush knife is intended for use with compatible Stihl brushcutters to clear dense vegetation. It is not designed for cutting wood or other hard materials.
Compatibilidade: This blade is suitable for the following Stihl brushcutter models: FS160, FS220, FS280, FS290, FS300, FS310, FS350, FS400, FS450, FS480.

Imagem 1.1: The Stihl Brush Knife 300-3. This image shows the Stihl Brush Knife 300-3, a durable metal blade designed for heavy-duty clearing tasks. It features three sharp cutting edges and a central mounting hole.
2. Informações de segurança
AVISO: Always read and understand the safety precautions and operating instructions in your brushcutter's owner's manual before installing, operating, or maintaining this brush knife.
- Equipamento de Proteção Individual (EPI): Always wear appropriate PPE, including eye protection, hearing protection, head protection, heavy-duty gloves, long pants, and safety boots, when handling or operating the brush knife.
- Desligar: Before performing any installation, maintenance, or inspection, ensure the brushcutter engine is switched off and the spark plug cap is removed to prevent accidental starting.
- Arestas afiadas: The brush knife has sharp edges. Handle with extreme care and always wear heavy-duty gloves to prevent injury.
- Instalação segura: Ensure the brush knife is correctly and securely installed according to the brushcutter's manual. An improperly installed blade can detach and cause serious injury.
- Inspecione antes de usar: Before each use, inspect the blade for cracks, bends, or other damage. Do not use a damaged blade; replace it immediately.
- Área de trabalho limpa: Ensure the work area is clear of bystanders, pets, and obstacles that could be struck by the blade or ejected debris.
3. Conteúdo da embalagem
Seu pacote deverá conter o seguinte item:
- One (1) Stihl Brush Knife 300-3 (Part No. 4119 713 4100)
4. Configuração e instalação
Installation of the Stihl Brush Knife 300-3 requires careful attention to detail to ensure safe operation. Always refer to your specific Stihl brushcutter's owner's manual for detailed, model-specific instructions and diagrams.
- Prepare Brushcutter: Ensure the brushcutter engine is switched off and cool. Remove the spark plug cap to prevent accidental starting. Place the brushcutter on a stable, flat surface.
- Use EPI (Equipamento de Proteção Individual): Put on heavy-duty gloves and eye protection before handling the blade.
- Remove Existing Attachment (if applicable): If an existing cutting attachment is installed, follow your brushcutter's manual to safely remove it. This typically involves using a locking pin or tool to secure the shaft and then unscrewing the retaining nut.
- Install Brush Knife: Place the Stihl Brush Knife 300-3 onto the brushcutter's gearhead shaft, ensuring the central hole (20mm diameter) aligns correctly. The blade should sit flush against the support washer or plate. Ensure the cutting direction indicated on the blade (if any) matches the rotation direction of the brushcutter.
- Lâmina Segura: Install the necessary washers, clamping plates, and retaining nut as specified in your brushcutter's manual. Tighten the retaining nut securely using the appropriate tools. Do not overtighten.
- Verificar instalação: After installation, manually rotate the blade to ensure it is properly seated and spins freely without wobbling. Check that all fasteners are tight.
- Verificação final: Reattach the spark plug cap.
5. Instruções de operação
The Stihl Brush Knife 300-3 is designed for efficient clearing when used correctly. Always operate your brushcutter according to its owner's manual.
- Verificação pré-operação: Before starting the brushcutter, ensure the blade is securely attached, free from damage, and the work area is clear.
- Starting the Brushcutter: Follow the starting procedure outlined in your brushcutter's manual.
- Técnica de Corte: Use a sweeping motion to cut through dense vegetation. Allow the blade to do the work; do not force it. Maintain a firm grip on the brushcutter handles.
- Manter distância: Keep a safe distance from the cutting attachment and ensure bystanders are well away from the operating area.
- Evite obstáculos: Be vigilant for rocks, metal objects, or other hard obstacles that could damage the blade or be ejected.
- Stopping the Brushcutter: Follow the stopping procedure outlined in your brushcutter's manual. Allow the blade to come to a complete stop before setting the machine down.
6. Manutenção
Proper maintenance extends the life of your Stihl Brush Knife 300-3 and ensures safe operation.
- Limpeza: After each use, clean the blade thoroughly to remove sap, dirt, and debris. Use a stiff brush and appropriate cleaning agents if necessary. Ensure the blade is dry before storage.
- Inspeção: Regularly inspect the blade for signs of wear, cracks, bends, or missing teeth. Even minor damage can compromise safety and performance.
- Afiação: The 3-bladed knife can be sharpened. Use a suitable file or grinding tool, maintaining the original blade angle. Ensure all three blades are sharpened evenly to maintain balance. If unsure, consult a Stihl authorized dealer.
- Substituição: Replace the blade if it is severely damaged, bent, or excessively worn. Using a damaged blade can lead to serious injury or damage to the brushcutter.
- Armazenar: Store the brush knife in a dry place, protected from moisture and corrosion. Consider applying a thin layer of oil to prevent rust. Keep out of reach of children.
7. Solução De Problemas
If you encounter issues with the brush knife, consider the following:
- Lâmina não corta eficazmente:
- Verifique se a lâmina está cega e precisa ser afiada.
- Inspect for damage (e.g., bent or chipped edges).
- Ensure the blade is installed with the correct cutting direction.
- Excessive Vibration During Operation:
- Verify the blade is securely and correctly installed.
- Inspect the blade for damage or imbalance (e.g., a bent blade). A damaged or unbalanced blade must be replaced.
- Ensure the brushcutter's gearhead is functioning correctly (refer to brushcutter manual).
- Blade Detaches During Use:
- IMMEDIATELY STOP OPERATION. This indicates a severe safety hazard.
- Check if the retaining nut was properly tightened during installation.
- Inspect the blade and mounting hardware for damage. Do not reuse damaged components.
- Consult a Stihl authorized dealer for inspection and repair.
8. Especificações
| Recurso | Especificação |
|---|---|
| Nome do produto | Brush Knife 300-3 |
| Número da peça | 4119 713 4100 |
| Diâmetro da lâmina | 300 mm (11.8 polegadas) |
| Número de lâminas | 3 |
| Diâmetro do furo de montagem | 20 mm (0.79 polegadas) |
| Peso do item | 1.59 libras (0.72 kg) |
| Dimensões da embalagem | 12.8 x 11.61 x 0.28 polegadas (32.5 x 29.5 x 0.7 cm) |
| Fabricante | Stihl |
9. Garantia e Suporte
As a genuine Stihl OEM part, this brush knife is manufactured to high-quality standards. For specific warranty information, please refer to the warranty policy provided with your original Stihl brushcutter or contact an authorized Stihl dealer.
For technical support, replacement parts, or service, please contact your local authorized Stihl dealer or visit the official Stihl website. Always provide the full model number of your brushcutter and the part number of the brush knife (4119 713 4100) when seeking assistance.





