Einführung
This instruction manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your Generac 6821 1.5-inch Clean Water Pump. Please read this manual thoroughly before assembly, operation, or maintenance to ensure proper use and to prevent injury or damage.
The Generac 6821 is a robust, gas-powered clean water pump designed for various water transfer applications, featuring a 79cc engine and a comprehensive accessory kit for immediate use.
Sicherheitshinweise
WARNUNG: Die Nichtbeachtung dieser Sicherheitsanweisungen kann zu schweren Verletzungen oder zum Tod führen.
- Always read and understand the entire manual before operating the pump.
- Operate the pump in a well-ventilated area to avoid carbon monoxide poisoning. Never operate indoors.
- Halten Sie Kinder und Haustiere vom Betriebsbereich fern.
- Do not operate the pump with damaged hoses, connections, or if any parts are missing or broken.
- Tragen Sie geeignete persönliche Schutzausrüstung (PSA), einschließlich Augenschutz und Handschuhe.
- Stellen Sie sicher, dass die Pumpe während des Betriebs auf einer stabilen, ebenen Fläche steht.
- Do not refuel the engine while it is running or hot. Allow it to cool before adding fuel.
- Keep flammable materials away from the pump during operation.
Packungsinhalt
Vor Beginn der Montage oder des Betriebs prüfen Sie, ob alle Teile vorhanden sind:
- Generac 6821 1.5-inch Clean Water Pump
- 10-foot Suction Hose
- 25-foot Discharge Hose
- Sieb
- Motoröl
- Öltrichter
- Handle Kit (and potentially wheel kit, depending on specific model variant)
- Benutzerhandbuch (dieses Dokument)
Aufstellen
1. Auspacken und Inspektion
Carefully remove all components from the packaging. Inspect for any shipping damage. If any parts are damaged or missing, do not operate the pump and contact customer support.
2. Griffmontage
Attach the carrying handle to the pump frame using the provided hardware. Ensure it is securely fastened for safe transport.

Image: The Generac 6821 Clean Water Pump shown with its orange handle securely attached to the top of the engine frame, ready for transport.
3. Motoröl hinzufügen
The engine is shipped without oil. Before starting, add the supplied engine oil using the oil funnel. Locate the oil fill cap/dipstick, remove it, and slowly pour oil until it reaches the upper mark on the dipstick. Do not overfill.
4. Kraftstoff hinzufügen
Fill the fuel tank with fresh, unleaded gasoline (minimum 87 octane). Do not use E85 fuel. Ensure the fuel cap is securely tightened after filling.

Bild: Eine Draufsicht view of the Generac 6821 pump, highlighting the orange fuel cap on the engine and the black pull-start handle.
5. Schläuche anschließen
Connect the suction hose to the pump's inlet port (often color-coded, e.g., blue for inlet). Attach the strainer to the end of the suction hose. Connect the discharge hose to the pump's outlet port (often color-coded, e.g., green for outlet). Ensure all connections are tight to prevent air leaks, which can affect priming and pump performance.

Abbildung: Seite A view of the Generac 6821 pump, clearly showing the green-colored discharge port where the outlet hose connects.

Abbildung: Eine Vorderseite view of the Generac 6821 pump, highlighting the blue-colored suction port where the inlet hose connects.
6. Die Pumpe vorbereiten
The Generac 6821 features a custom funnel design for quick and easy priming. Remove the prime cap located on top of the pump housing. Fill the pump housing with clean water until it overflows. Replace the prime cap securely. The pump must be primed before each use to ensure it can draw water effectively.

Bild: Eine Nahaufnahme view of the orange cap labeled 'Prime' on the top of the pump housing, indicating the fill point for priming the pump.
Bedienungsanleitung
1. Starten des Motors
- Ensure the pump is properly primed and all hoses are connected.
- Place the suction hose with the strainer into the water source.
- Drehen Sie den Kraftstoffhahn in die Position „EIN“.
- Den Chokehebel in die Position „CHOKE“ bringen (wenn der Motor kalt ist).
- Den Motorschalter in die Position „EIN“ drehen.
- Den Seilzugstarterhebel fest und gleichmäßig ziehen, bis der Motor anspringt.
- Sobald der Motor anspringt, bewegen Sie den Chokehebel allmählich in die Position „RUN“.
2. Während des Betriebs
Monitor the pump for consistent water flow and listen for any unusual noises. Ensure the suction hose remains submerged in water to prevent the pump from running dry, which can cause damage.
3. Abstellen des Motors
- Den Motorschalter in die Position „AUS“ drehen.
- Drehen Sie den Kraftstoffhahn in die Position „AUS“.
- Allow the engine to cool before handling or storing.
Wartung
Regelmäßige Wartung gewährleistet optimale Leistung und verlängert die Lebensdauer Ihrer Pumpe.
Motoröl
Check the engine oil level before each use. Change the oil after the first 5 hours of operation, and then every 50 hours or annually, whichever comes first.
Luftfilter
Inspect the air filter regularly and clean or replace it as needed, especially when operating in dusty conditions.
Zündkerze
Inspect the spark plug annually or every 100 hours. Clean or replace if necessary, ensuring the correct gap.
Pump Housing and Impeller
Periodically inspect the pump housing and impeller for debris or wear. Clean out any blockages to maintain efficient flow.
Lagerung
For long-term storage, drain the fuel tank and carburetor. Remove the spark plug and pour a small amount of engine oil into the cylinder, then pull the recoil starter a few times to distribute the oil. Clean the exterior of the pump and store it in a dry, protected area.
Fehlerbehebung
| Problem | Mögliche Ursache | Lösung |
|---|---|---|
| Motor startet nicht | No fuel, old fuel, low oil, choke position incorrect, engine switch off, fouled spark plug | Add fresh fuel, check oil level, adjust choke, turn engine switch ON, clean/replace spark plug |
| Pump not moving water | Not primed, air leak in suction hose, clogged strainer, suction hose not submerged | Prime pump, check hose connections, clean strainer, ensure suction hose is fully submerged |
| Reduzierter Wasserdurchfluss | Partial blockage in hoses or impeller, air leak, worn impeller | Inspect and clear blockages, check hose connections, contact service for impeller inspection |
| Motor läuft unrund | Veralterter Kraftstoff, verschmutzter Luftfilter, falscher Zündkerzenabstand | Drain and replace fuel, clean/replace air filter, adjust/replace spark plug |
Technische Daten
- Marke: Generac
- Modellnummer: 6821
- Energiequelle: Gasbetrieben
- Motor: Generac 79cc
- Produktabmessungen (L x B x H): 17.2" x 12.1" x 16.5"
- Artikelgewicht: 44 Pfund
- Maximale Durchflussrate: 80 Gallonen pro Minute
- Maximale Hubhöhe: 26 Fuß
- Material: Stainless Steel (pump components)
- UPC: 696471068214

Image: The Generac 6821 Clean Water Pump with its key dimensions (length, width, height) clearly indicated in inches.
Garantie
This Generac 6821 Clean Water Pump is covered by a 1 Jahr Herstellergarantie from the date of purchase. Please retain your proof of purchase for warranty claims. The warranty covers defects in materials and workmanship under normal use. It does not cover damage due to misuse, neglect, unauthorized modifications, or normal wear and tear.
Unterstützung
For technical assistance, parts, or warranty inquiries, please contact Generac customer support. Refer to the official Generac webDie aktuellsten Kontaktdaten finden Sie auf unserer Website oder in Ihren Kaufunterlagen.
Online-Ressourcen: www.generac.com