1. Úvod
This manual provides detailed instructions for the installation, operation, and maintenance of your WFLNHB 799866 carburetor. This replacement carburetor is designed to restore optimal fuel delivery to your lawn mower engine, ensuring efficient performance. Please read this manual thoroughly before attempting any installation or maintenance procedures.

Image: Key features of the WFLNHB carburetor, highlighting convenience, durability, and quality.
2. Kompatibilita a uložení
The WFLNHB 799866 carburetor is a direct replacement for various lawn mower models and part numbers. Verify your engine's part number or model to ensure proper fitment.
Kompatibilní čísla dílů:
- 790845
- 799871
- 799866
- 796707
- 794304
Compatible Engine Models (Toro, Craftsman, and others):
- Toro 6.5, 6.75, 7.0, 7.25, 7.5HP Recycle Mower 190cc (22" models)
- Craftsman 6.5hp engines
- 124T02, 124T05, 124T07, 126M02
- 129700, 129800, 123H00, 123J00, 124H00, 125H00
- 12G700, 12G800, 12J700, 12J800, 12J900
- 12L800, 12U800, 12V800, 12C700, 12C800, 12D800 4 Cycle Small Engines
- Toro Mower models: 16401, 20716, 20712, 20713, 20714 Walk Behind Mower
- Stens part numbers: 50-657, 520-966

Image: A lawn mower illustrating the application of the WFLNHB carburetor, with fitment information.
3. Obsah balení
Your WFLNHB 799866 carburetor package typically includes the following components:
- 1 x WFLNHB 799866 Carburetor
- 1 x Mounting Gasket
- 1x O-kroužek

Image: The WFLNHB 799866 carburetor shown with the accompanying mounting gasket and O-ring.
4. Bezpečnostní informace
Always prioritize safety when working with fuel systems and internal combustion engines. Failure to follow these safety guidelines may result in serious injury or property damage.
- Odpojení zapalovací svíčky: Před zahájením jakékoli práce vždy odpojte kabel zapalovací svíčky, abyste zabránili náhodnému nastartování motoru.
- Práce v dobře větraném prostoru: Výpary benzínu jsou hořlavé a nebezpečné. Zajistěte dostatečné větrání.
- Žádné otevřené plameny: Keep all ignition sources, such as sparks, open flames, and smoking materials, away from the work area.
- Používejte ochranné pomůcky: Use safety glasses, gloves, and appropriate clothing to protect yourself.
- Zacházejte s palivem opatrně: Drain fuel into an approved container. Avoid spilling fuel. Clean up any spills immediately.
- Nechte motor vychladnout: Never work on a hot engine. Allow it to cool completely before servicing.
- Zajištění sekačky: Ensure the lawn mower is stable and cannot move during the installation process.
5. Instalační příručka
This section outlines the general steps for replacing a carburetor. Specific procedures may vary slightly depending on your lawn mower model. Refer to your mower's service manual for detailed instructions.
Požadované nástroje:
- Sada nástrčných klíčů
- Sada šroubováků
- Kleště
- Palivové potrubí třamp
- Approved fuel container
Instalace krok za krokem:
- Příprava sekačky: Ensure the engine is cool. Disconnect the spark plug wire. Place the mower on a stable, level surface.
- Vypuštění paliva: Použijte palivovou hadici clamp to pinch off the fuel line. Disconnect the fuel line from the carburetor and drain any remaining fuel into an approved container.
- Demontáž sestavy vzduchového filtru: Carefully remove the air filter cover and air filter. Disconnect any hoses or linkages attached to the air filter housing.
- Odpojení spojovacích prvků a hadic: Note the position of all linkages (throttle, choke) and hoses connected to the old carburetor. Take photos if necessary for reassembly. Carefully disconnect them.
- Demontáž starého karburátoru: Loosen and remove the mounting bolts that secure the carburetor to the engine. Carefully remove the old carburetor, ensuring any gaskets are also removed.
- Čistý montážní povrch: Clean the engine's mounting surface to ensure a proper seal with the new gasket.
- Instalace nových těsnění: Place the new gaskets in their correct positions. Ensure they are properly aligned.
- Instalace nového karburátoru: Position the new WFLNHB 799866 carburetor onto the mounting studs. Secure it with the mounting bolts, tightening them evenly to the manufacturer's specifications (refer to your mower's manual).
- Znovu připojte propojení a hadice: Reattach all throttle and choke linkages, ensuring they move freely. Reconnect the fuel line and any other hoses. Remove the fuel line clamp.
- Znovu namontujte sestavu vzduchového filtru: Znovu nainstalujte vzduchový filtr a kryt vzduchového filtru.
- Doplnění palivové nádrže: Add fresh, clean gasoline to the fuel tank.
- Znovu připojte zapalovací svíčku: Znovu připojte kabel zapalovací svíčky.
Video: Overview of the WFLNHB 799866 carburetor, demonstrating its components and providing key measurements for fitment verification.
6. Operation After Carburetor Replacement
After successful installation of the new carburetor, follow these steps to start your engine:
- Naplňte motor (pokud je to relevantní): Some engines have a primer bulb. Press it several times until fuel is visible in the bulb or fuel line.
- Nastavte tlumivku: Move the choke lever to the 'Choke' or 'Start' position.
- Startovací motor: Pull the starter rope firmly or engage the electric starter. The engine should start within a few pulls.
- Nastavení sytiče: Once the engine starts, gradually move the choke lever to the 'Run' position as the engine warms up.
- Zkontrolujte netěsnosti: While the engine is running, carefully inspect for any fuel leaks around the carburetor and fuel lines. Address any leaks immediately.
Allow the engine to run for a few minutes to ensure proper operation and fuel flow through the new carburetor.
7. Údržba
Proper maintenance extends the life of your carburetor and ensures consistent engine performance.
- Používejte čerstvé palivo: Always use fresh, clean gasoline. Stale fuel can cause deposits and clog carburetor passages. Consider using a fuel stabilizer if storing fuel for extended periods.
- Výměna palivového filtru: Regularly check and replace the fuel filter according to your mower's maintenance schedule. A clogged fuel filter can restrict fuel flow to the carburetor.
- Čistý vzduchový filtr: A dirty air filter can restrict airflow, leading to a rich fuel mixture and poor engine performance. Clean or replace the air filter as recommended.
- Sezónní skladování: Before long-term storage, drain the fuel system or run the engine until it runs out of fuel to prevent gum and varnish buildup in the carburetor.
8. Řešení problémů
If you encounter issues after installing the new carburetor, consider these common troubleshooting steps:
| Problém | Možná příčina | Řešení |
|---|---|---|
| Motor nenastartuje | Žádné palivo, ucpaný palivový filtr, nesprávné nastavení sytiče, problém se zapalovací svíčkou | Check fuel level, replace fuel filter, adjust choke, check/replace spark plug. |
| Motor běží nepravidelně nebo se zastavuje | Dirty air filter, old fuel, vacuum leak, carburetor adjustment needed | Clean/replace air filter, use fresh fuel, check for loose connections/gaskets, consult a professional for carburetor adjustment. |
| Úniky paliva | Loose connections, damaged gaskets, float bowl issue | Tighten fuel line connections, replace damaged gaskets, inspect float bowl for proper sealing. |
| Motor nemá výkon | Clogged fuel passages, dirty air filter, improper carburetor adjustment | Ensure fuel is clean, clean/replace air filter, professional carburetor tuning may be required. |
If these steps do not resolve the issue, it is recommended to consult a qualified small engine mechanic.
9. Specifikace
Key specifications for the WFLNHB 799866 Carburetor:
- Značka: WFLNHB
- Číslo modelu: 799866 (Replacement for various models)
- Typ příruby: Bolt On
- Typ paliva: Benzín
- Doporučená použití: Sekačka na trávu

Image: Detailed dimensions of the WFLNHB carburetor, including inlet and outlet measurements.
10. Záruka a podpora
For warranty information or technical support regarding your WFLNHB 799866 carburetor, please refer to the product packaging or contact WFLNHB customer service directly. Keep your purchase receipt as proof of purchase.
Kontaktní údaje: Please visit the official WFLNHB website or refer to your product documentation for the most current contact details.