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

PROBLEM

 

CAUSE

CORRECTION

Does not start

9.

Control bar defective.

9.

Replace control bar.

(continued)

10. Fuel valve lever (if so

10. Turn fuel valve lever

 

 

equipped) in OFF position.

 

to the ON position.

 

11. Weak battery (if equipped).

11. Charge battery.

 

12. Disconnected battery

12. Connect battery to engine.

 

 

connector (if equipped).

 

 

 

 

 

 

 

Loss of power

1.

Rear of mower housing or

1.

Raise cutting height.

 

 

blade dragging in grass.

 

 

 

2.

Cutting too much grass.

2.

Raise cutting height.

 

3.

Dirty air filter.

3.

Clean/replace air filter.

 

4.

Buildup of grass, leaves,

4.

Clean underside of mower

 

 

and trash under mower.

 

housing.

 

5.

Too much oil in engine.

5.

Check oil level.

 

6.

Walking speed too fast.

6.

Cut at slower walking speed.

 

 

 

 

 

Poor cut –

1.

Worn, bent or loose blade.

1.

Replace blade. Tighten

uneven

 

 

 

blade bolt.

 

2.

Wheel heights uneven.

2.

Set all wheels at same

 

 

 

 

height.

 

3.

Buildup of grass, leaves

3.

Clean underside of

 

 

and trash under mower.

 

mower housing.

 

 

 

 

 

Excessive

1.

Worn, bent or loose blade.

1.

Replace blade. Tighten

vibration

 

 

 

blade bolt.

 

2.

Bent engine crankshaft.

2.

Contact a Husqvarna or other

 

 

 

 

qualified service center.

 

 

 

 

 

Starter rope

1.

Engine flywheel brake is on

1.

Depress control bar to

hard to pull

 

when control bar is released.

 

upper handle before

 

 

 

 

pulling the starter rope.

 

2.

Bent engine crankshaft.

2.

Contact a Husqvarna or other

 

 

 

 

qualified service center.

 

3.

Blade adapter broken.

3.

Replace blade adapter.

 

4.

Blade dragging in grass.

4.

Move lawn mower to cut

 

 

 

 

grass or to hard surface.

 

 

 

 

 

Grass catcher

1.

Cutting height too low.

1.

Raise cutting height.

not filling

2.

Lift on blade worn off.

2.

Replace blade.

(If so equipped)

3.

Catcher not venting air.

3.

Clean grass catcher.

 

 

 

 

 

Hard to push

1.

Grass is too high or wheel

1.

Raise cutting height.

 

 

height is too low.

 

 

 

2.

Rear of mower housing or

2.

Raise rear of mower housing

 

 

blade dragging in grass.

 

one (1) setting higher.

 

3.

Grass catcher too full.

3.

Empty grass catcher.

 

4.

Handle height position not

4.

Adjust handle height to suit.

 

 

right for you.

 

 

 

 

 

 

 

Loss of drive

1.

Belt wear.

1.

Check/replace drive belt.

or slowing of

2.

Belt off of pulley.

2.

Check/reinstall drive belt.

drive speed

3.

Drive cable worn or broken.

3.

Replace drive cable.

 

4.

“Loose” drive control system.

4.

Adjust drive control.

 

 

 

 

 

18

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Image 18
Husqvarna 6521RS Worn, bent or loose blade Replace blade. Tighten, Blade bolt, Bent engine crankshaft, Upper handle before
Page 17 Page 19

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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