1. Introduzione
Welcome to the Troy-Bilt TB400 Gas Leaf Blower instruction manual. This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your new leaf blower. Please read this manual thoroughly before operating the unit and keep it for future reference.

Figura 1: Fronte view of the Troy-Bilt TB400 Gas Leaf Blower, showcasing its red and black design with the blower tube attached.
2. Informazioni di sicurezza
Priurità sempre a sicurezza quandu si utilizanu apparecchiature elettriche. U mancatu rispettu di l'istruzzioni di sicurezza pò causà ferite gravi o danni materiali.
Reguli di sicurezza generale:
- Read and understand all instructions before operating the blower.
- Wear appropriate personal protective equipment (PPE), including eye protection, hearing protection, long pants, and sturdy footwear.
- Do not operate the blower when tired, ill, or under the influence of alcohol or drugs.
- Mantene i zitelli, i passanti è l'animali domestici à almenu 50 piedi (15 metri) di distanza da a zona di funziunamentu.
- Inspect the unit before each use for loose fasteners, fuel leaks, or damaged parts.
- Never modify the blower.
Sicurezza di carburante:
- Use a 40:1 gasoline to 2-cycle oil mixture.
- Mix fuel in a well-ventilated area away from ignition sources.
- Mantene u carburante in un cuntainer appruvatu in un locu frescu è seccu.
- Ùn fume micca mentre manipule u carburante.
- Pulisce immediatamente ogni carburante versatu.
3. Assemblea
The Troy-Bilt TB400 comes mostly pre-assembled. The primary assembly step involves attaching the blower tube.
Attaccà u tubu di u soffiatore:
- Align the blower tube with the outlet on the main unit.
- Push the tube firmly onto the outlet until it clicks into place or is securely seated.
- Ensure the tube is locked in position to prevent it from detaching during operation.

Figura 2: Side view of the Troy-Bilt TB400 Gas Leaf Blower, showing the securely attached black blower tube extending from the red main unit.
4. Setup and Fueling
Fuel Mixture (40:1 Ratio):
This unit requires a mixture of unleaded gasoline and 2-cycle engine oil at a 40:1 ratio. This means for every 40 parts of gasoline, add 1 part of 2-cycle oil.
- Use fresh, clean, unleaded gasoline with an octane rating of 87 or higher.
- Use a high-quality 2-cycle engine oil specifically designed for air-cooled engines.
- Mix the fuel and oil thoroughly in a separate, approved fuel container before pouring into the blower's fuel tank.

Figura 3: Detailed view of the fuel tank cap and engine controls on the Troy-Bilt TB400, including the primer bulb and choke lever.
Riempimentu di u serbatoiu di carburante:
- Pone u soffiatore nantu à una superficia piana è stabile.
- Pulite a zona intornu à u tappu di carburante per impedisce a sporcizia di entre in u serbatoiu.
- Eliminate cù cura u tappu di carburante.
- Pour the pre-mixed fuel into the tank, being careful not to overfill. Leave a small air gap.
- Rimpiazzate bè u tappu di carburante.
5. Operating Instructions
Starting the Engine (Cold Start):
- Set the cruise control lever to the "UP" position.
- Press the primer bulb 10 times until fuel is visible in the return line.
- Set the choke lever to the "START" position.
- Pull the starter rope 5 times. The engine may attempt to start.
- Set the choke lever to the "WARM-UP" position.
- Pull the starter rope 3-5 times until the engine starts.
- Lasciate u mutore à calà per 30-60 seconde.
- Set the choke lever to the "RUN" position.

Figure 4: Close-up of the Troy-Bilt TB400 engine, showing the "TO START" label with step-by-step instructions for cold starting, including primer bulb and choke settings.
Starting the Engine (Warm Start):
- Set the choke lever to the "RUN" position.
- Tirate a corda di starter finu à chì u mutore parte.
Funzionamentu di u soffiatore:
- Tene fermamente u soffiatore cù e duie mani.
- Use the variable speed throttle to control the airflow. The TB400 offers air speeds up to 180 MPH and clearing power of up to 400 CFM.
- Direct the airflow to clear leaves, grass clippings, and other debris from surfaces.
- For extended operation, engage the cruise control feature to maintain a desired speed without continuously holding the throttle trigger.

Figure 5: A person operating the Troy-Bilt TB400 Gas Leaf Blower, effectively clearing autumn leaves from a grassy area, demonstrating its maneuverability.
Arresta u mutore:
- Rilasciate u grillu di l'acceleratore.
- Press and hold the "STOP" button until the engine shuts off.
6. Mantenimentu
Regular maintenance ensures optimal performance and extends the life of your Troy-Bilt TB400. Always disconnect the spark plug wire before performing any maintenance.
Filtru à l'aria:
- Inspect the air filter before each use.
- Clean or replace the air filter as needed. A dirty air filter can reduce engine performance.
Spark Plug:
- Inspect the spark plug annually or every 25 hours of operation.
- Pulite o rimpiazzate a candela s'ella hè sporca o dannighjata.
Sistema di carburante:
- Drain the fuel tank and run the engine until it stops before long-term storage (over 30 days).
- Alternatively, use a fuel stabilizer to prevent fuel degradation.
Pulizia generale:
- Keep the exterior of the blower clean and free of debris.
- Ensure cooling fins are clear to prevent overheating.
7. Risoluzione di prublemi
| Prublemu | Causa Possibile | Soluzione |
|---|---|---|
| U mutore ùn principia micca | No fuel, incorrect starting procedure, fouled spark plug, clogged fuel filter. | Check fuel level and mixture. Follow starting instructions carefully. Clean/replace spark plug. Replace fuel filter. |
| U mutore funziona male / manca di putenza | Dirty air filter, incorrect fuel mixture, old fuel, carburetor issues. | Clean/replace air filter. Ensure correct 40:1 fuel mixture. Use fresh fuel. Consult service center for carburetor adjustment. |
| Fume eccessivu | Too much oil in fuel mixture, incorrect oil type. | Ensure correct 40:1 fuel mixture. Use recommended 2-cycle oil. |
8. Specificazioni
| Feature | Detail |
|---|---|
| Marca | Troia-Bilt |
| Nome di mudellu | TB400 |
| Numero di mudellu | 41BR25BL766 |
| Tipu di mutore | 25cc 2-Cycle Gas Engine |
| A velocità di l'aria | Finu à 180 MPH |
| Volume d'aria | Finu à 400 CFM |
| Fonte d'energia | Funziona à Gas |
| Fattore di forma | Handheld |
| Pesu di l'articulu | 12.2 liri |
| Dimensioni di u produttu | 15.38"L x 10"L x 14.75"A |
| Ratio di carburante | 40:1 (Benzina: Oliu à 2 tempi) |
| Funzione speciale | Lightweight, Variable Speed Throttle, SpringAssist Technology |
9. Garanzia è Support
For warranty information, technical support, or to locate an authorized service center, please refer to the official Troy-Bilt website or contact their customer service. Contact details are typically provided in the packaging or on the product itself.
- Produttore: Troia-Bilt
- Serviziu Clienti (USA): 1-800-828-5500
- Serviziu Clienti (Canada): 1-800-668-1238
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