MAINTENANCE

ENGINE

LUBRICATION

Use only high quality detergent oil rated with API service classifi cation SF-SJ. Select the oil's SAE viscosity grade according to your expected operating temperature.

NOTE: Multi-viscosity oils (5W30, 10W30 etc.) improve starting in cold weather, and you should check your engine oil level frequently to avoid possible engine damage from running low on oil.

Change the oil after every 25 hours of operation or at least once a year if the lawn mower is not used for 25 hours in one year.

Check the crankcase oil level before starting the engine and after each fi ve (5) hours of continuous use. Tighten oil plug securely each time you check the oil level.

TO CHANGE ENGINE OIL (See Fig. 12)

NOTE: Before tipping lawn mower to drain oil, drain fuel tank by running engine until fuel tank is empty.

1.Disconnect spark plug wire from spark plug and place wire where it cannot come in contact with spark plug.

2.Remove engine oil cap; lay aside on a clean surface.

3.Tip lawn mower on its side as shown and drain oil into a suitable container. Rock lawn mower back and forth to remove any oil trapped inside of engine.

4.Wipe off any spilled oil from lawn mower or side of engine.

5.Fill engine with oil. (See “ADD OIL” in the Operation section of this manual).

6.Reconnect spark plug wire to spark plug.

OIL FILLER CAP/DIPSTICK

UPPER

LIMIT

LOWER

LIMIT

FIG. 12

AIR FILTER

Your engine will not run properly and may be damaged by using a dirty air fi lter. Replace the air fi lter every 100 hours of operation or every season, whichever occurs fi rst. Service air cleaner more often under dusty conditions. See the maintenance section of your engine manual.

MUFFLER

Inspect and replace corroded muffl er as it could create a fi re hazard and/or damage.

SPARK PLUG

Replace spark plug at the beginning of each mowing season or after every 100 hours of operation, whichever occurs

rst. Spark plug type and gap setting are shown in the “PRODUCT SPECIFICATIONS” section of this manual.

CLEANING

IMPORTANT: FOR BEST PERFORMANCE, KEEP MOWER HOUSING FREE OF BUILT-UP GRASS AND TRASH. CLEAN THE UNDERSIDE OF YOUR MOWER AFTER EACH USE.

CAUTION: Disconnect spark plug wire from spark plug and place wire where it cannot come in contact with spark plug.

Clean the underside of your lawn mower by scraping to remove build-up of grass and trash.

Clean engine often to keep trash from accumulating. A clogged engine runs hotter and shortens engine life.

Keep fi nished surfaces and wheels free of all gasoline, oil, etc.

We do not recommend using a garden hose to clean lawn mower unless the electrical system, muffl er, air fi lter and carburetor are covered to keep water out. Water in engine can result in shortened engine life.

CLEAN UNDER DRIVE COVER

Clean under drive cover at least twice a season. Scrape un- derside of cover with putty knife or similar tool to remove any build-up of trash or grass on underside of drive cover.

12

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Husqvarna 5521CH owner manual Engine, Cleaning

5521CH specifications

The Husqvarna 5521CH is a versatile and powerful lawn mower designed for homeowners who seek efficiency and ease of use when maintaining their lawns. This 21-inch walk-behind mower is equipped with a range of features and technologies that enhance its performance and user experience.

One of the standout features of the Husqvarna 5521CH is its reliable Honda engine which provides ample power for tackling grass of various heights and densities. The Honda engine is known for its durability and fuel efficiency, allowing users to mow longer without frequent refueling. With a cutting width of 21 inches, this mower can cover large areas efficiently, making it an ideal choice for medium to large lawns.

The Husqvarna 5521CH incorporates an adjustable cutting height system, allowing users to select from six different height positions, ranging from 1 inch to 4 inches. This flexibility enables the mower to adapt to different grass types and seasonal growth patterns, ensuring a clean and professional-looking cut every time.

The mower features a sturdy steel deck that is built to withstand the rigors of mowing while also providing a smooth and even cut. The Rust-resistant finish on the deck helps improve the mower's longevity while reducing maintenance needs. Furthermore, the rear bagging system effectively collects grass clippings, allowing for easy disposal and promoting a neat lawn appearance.

Ergonomics play a crucial role in the design of the Husqvarna 5521CH. The adjustable handle provides comfortable operation for users of varying heights, while the foldable design allows for easy storage and transport. This is particularly advantageous for those with limited garage space.

The Husqvarna 5521CH is also equipped with innovative technologies such as the Auto Walk self-propel system. This feature enhances maneuverability, allowing users to maintain a comfortable walking pace without exerting extra effort. The mower's design minimizes vibrations, ensuring a more pleasant mowing experience.

In summary, the Husqvarna 5521CH is a robust and efficient lawn mower that combines power, versatility, and user-friendly technology. With its durable construction, adjustable cutting height, and ergonomic design, it stands out as an excellent choice for homeowners looking to maintain their lawns effortlessly and achieve professional results.