CLEANING

IMPORTANT: For best performance, keep mower housing free of built-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 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 finished 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, muffler, air filter and carburetor are covered to keep water out. Water in engine can result in short- ened engine life.

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

SERVICE AND ADJUSTMENTS

WARNING: To avoid serious injury, before performing any service and adjustments:

1.Release control bar and stop engine.

2.Make sure the blade and all moving parts have completely stopped.

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

8.Turn lawn mower on its side with air filter and carburetor down.

9.Reinstall blade.

LAWN MOWER

TO ADJUST CUTTING HEIGHT

See “TO ADJUST CUTTING HEIGHT” in the Operation section of this manual.

REAR DEFLECTOR

The rear deflector, attached between the rear

wheels of your mower, is provided to minimize Gearcase pulley the possibility that objects will be thrown out

of the rear of the mower into the operator mowing position. If the defl ector becomes damaged, it should be replaced.

TO REMOVE DRIVE BELT

Drive cover

Spring

Belt

1.Remove drive cover.

2.Remove spring and belt keeper.

3.Remove belt from gearcase pulley.

4.Turn lawn mower on its side with air filter and carburetor down.

5.Remove blade, engine pulley and debris shield.

6.Remove engine pulley and belt from debris shield.

TO REPLACE DRIVE BELT

1.Place new drive belt in engine pulley and belt retainer of debris shield.

2.Route the other end of the new drive belt through hole in housing.

3.Reinstall debris shield.

4.Return mower to upright position.

5.Install new belt on gearcase pulley.

6.Reinstall belt keeper and spring.

7.Reinstall drive cover.

NOTE: Always use factory approved belt to assure proper fit and long life.

Belt retainer

15Debris shield

keeper

Belt

Engine pulley

Drive belt

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Husqvarna 6521RS Service and Adjustments, Cleaning, Rear Deflector, To Remove Drive Belt, To Replace Drive Belt
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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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