Husqvarna 6521RS owner manual Other, Fuel System, Engine OIL, Cylinder, Problem Cause Correction

Page 17

Handle pin

SQUEEZE

Handle bracket

ENGINE

FUEL SYSTEM

IMPORTANT: It is important to prevent gum deposits from forming in essential fuel system parts such as carburetor, fuel filter, fuel hose, or tank during storage. Alcohol blended fuels (called gasohol or using ethanol or methanol) can attract moisture which leads to separation and formation of acids during storage. Acidic gas can damage the fuel system of an engine while in storage.

•Empty the fuel tank by starting the en- gine and letting it run until the fuel lines and carburetor are empty.

•Never use engine or carburetor cleaner products in the fuel tank or permanent damage may occur.

•Use fresh fuel next season.

NOTE: Fuel stabilizer is an acceptable alternative in minimizing the formation of fuel gum deposits during storage. Add

stabilizer to gasoline in fuel tank or stor- age container. Always follow the mix ratio found on stabilizer container. Run engine at least 10 minutes after adding stabilizer to allow the stabilizer to reach the car- buretor. Do not empty the gas tank and carburetor if using fuel stabilizer.

ENGINE OIL

Drain oil (with engine warm) and replace with clean engine oil. (See “ENGINE” in the Maintenance section of this manual).

CYLINDER

1.Remove spark plug.

2.Pour one ounce (29 ml) of oil through spark plug hole into cylinder.

3.Pull starter handle slowly a few times to distribute oil.

4.Replace with new spark plug.

OTHER

•Do not store gasoline from one season to another.

•Replace your gasoline can if your can starts to rust. Rust and/or dirt in your gasoline will cause problems.

•If possible, store your unit indoors and cover it to protect it from dust and dirt.

•Cover your unit with a suitable protec- tive cover that does not retain moisture. Do not use plastic. Plastic cannot breathe, which allows condensation to form and will cause your unit to rust.

IMPORTANT: Never cover mower while engine and exhaust areas are still warm.

CAUTION: Never store the lawn mower with gasoline in the tank inside a building where fumes may reach an open flame or spark. Allow the engine to cool before storing in any enclosure.

TROUBLESHOOTING - See appropriate section in manual unless directed to a Husqvarna Parts & Repair Center.

PROBLEM

 

CAUSE

 

CORRECTION

Does not start

1.

Dirty air filter.

1.

Clean/replace air filter.

 

2.

Out of fuel.

2.

Fill fuel tank.

 

3.

Stale fuel.

3.

Empty fuel tank and refill tank

 

 

 

 

with fresh, clean gasoline.

 

4.

Water in fuel.

4.

Empty fuel tank and refill tank

 

 

 

 

with fresh, clean gasoline.

 

5.

Spark plug wire disconnected.

5. Connect wire to plug.

 

6.

Bad spark plug.

6.

Replace spark plug.

 

7.

Loose blade or broken

7.

Tighten blade bolt or

 

 

blade adapter.

 

replace blade adapter.

 

8.

Control bar in released

8.

Depress control bar to

 

 

position.

 

handle.

 

 

 

 

 

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Contents Rotary Lawn Mower Safety Rules Table of ContentsIII. Children General ServiceIV. Safe Handling of Gasoline Do notLimited Warranty WarrantyAccessories Product SpecificationsToremovemowerfromcarton Assembly / PRE-OPERATIONHOW to SET UP Your Mower Operation Meets Cpsc Safety RequirementsKnow Your Lawn Mower Starting a cold engineHOW to USE Your Lawn Mower Side Discharging To Empty Grass CatcherTo Convert Mower Rear BaggingTo Start Engine Before Starting EngineTo Stop Engine Mulching Mowing Tips Mowing TipsLubrication Chart MaintenanceGeneral Recommendations Before Each USELawn Mower AIR Filter EngineMuffler Spark PlugCleaning Service and AdjustmentsRear Deflector To Remove Drive BeltStorage To Adjust HandleCarburetor HandleOther Problem Cause CorrectionFuel System Engine OILCatcher not venting air Clean grass catcher Qualified service centerBelt off of pulley Check/reinstall drive belt Worn, bent or loose blade Replace blade. TightenRepair Parts KEY Part Page KEY Part Description Page 532 41 37-72 Rev 03.27.07 by

6521RS specifications

The Husqvarna 6521RS is a versatile and powerful lawn mower, designed for homeowners who seek an efficient tool for their yard maintenance tasks. This model stands out with its exceptional features, technologies, and characteristics, making it a popular choice for both novice and experienced users.

At the heart of the Husqvarna 6521RS is its robust 163cc engine, which delivers strong power and performance while ensuring fuel efficiency. The engine is designed to start easily and operate smoothly, providing users with a seamless mowing experience. The mower features a 21-inch steel cutting deck, ensuring a wider cutting path that reduces the time spent mowing, perfect for medium to large sized lawns.

One of the standout features of the 6521RS is its Smart Start technology, which ensures that the mower starts quickly and with minimal effort, allowing users to focus on the task at hand without frustration. This technology works in conjunction with an air purge system that removes air from the carburetor and fuel system, promoting easier engine start-up.

The adjustable cutting height on the Husqvarna 6521RS ranges from 1 inch to 4 inches, allowing users to customize their mowing height to achieve the perfect lawn finish. The easy-to-use lever allows for quick adjustments, accommodating various grass types and seasonal changes.

Additionally, the mower is equipped with a rear-wheel drive system, which enhances its maneuverability and traction. This feature is especially beneficial when navigating around obstacles or mowing on uneven terrain, providing better control and stability.

For added convenience, the Husqvarna 6521RS comes with a foldable handle, making it easy to store the mower in compact spaces. This ergonomic design not only saves space but also ensures comfort during extended use, minimizing user fatigue.

The mower's durable construction is designed to withstand the rigors of frequent use. The robust materials and high-quality components contribute to a longer lifespan, making the 6521RS a worthwhile investment for homeowners.

Overall, the Husqvarna 6521RS combines performance, convenience, and durability, making it ideal for anyone looking to maintain a beautiful lawn with minimal effort. Whether you’re tackling a small patch or a larger yard, this mower is equipped to handle the job efficiently.
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