Introduction
Welcome to the user manual for your Shark Stratos Cordless Vacuum, Model IZ840HRW. This guide provides essential information for the assembly, operation, maintenance, and troubleshooting of your vacuum cleaner. Please read this manual thoroughly before using your appliance to ensure safe and efficient operation.

The Shark Stratos Cordless Vacuum in its upright and folded configurations, showcasing its compact storage and included crevice tool. The Clean Sense IQ display is also visible.
Key Features
- Clean Sense IQ: Infrared sensor detects dirt and automatically increases power for up to 50% better dirt pickup.
- HyperVelocity Plus Suction: Delivers ultra-powerful cordless suction performance.
- DuoClean PowerFins HairPro: Two brushroll system for deep cleaning carpets, engaging hard floors, and powerful hair pickup.
- MultiFLEX Technology: Allows bending the wand for cleaning under furniture and compact, freestanding storage.
- Self-Cleaning Brushroll: Prevents hair wrap for consistent performance.
- Long Runtime: Up to 50 minutes of runtime with a removable, rechargeable battery.
- HEPA Filtration & Anti-Allergen Complete Seal: Captures over 99.9% of dust, allergens, and odor.
- LED Display: Provides real-time readouts for battery, suction levels, and Clean Sense IQ status.
- Included Accessory: Crevice Tool for hard-to-reach areas.
Assembly
Your Shark Stratos Cordless Vacuum comes with several components that require simple assembly before first use. Follow these steps to set up your vacuum:
- Unpack Components: Carefully remove all parts from the packaging. Ensure you have the Handheld Vacuum, MultiFLEX Wand, DuoClean PowerFins HairPro Floor Nozzle, Battery, Charger, and Crevice Tool.
- Attach Wand to Floor Nozzle: Insert the MultiFLEX Wand into the neck of the DuoClean PowerFins HairPro Floor Nozzle until it clicks securely into place.
- Attach Handheld Vacuum to Wand: Slide the Handheld Vacuum onto the top of the MultiFLEX Wand until it clicks securely.
- Insert Battery: Insert the battery into the slot on the handheld vacuum until it clicks. Ensure it is fully seated.

An annotated diagram of the Shark Stratos Cordless Vacuum, highlighting key components such as the XL dust cup, LED display, MultiFLEX wand, Clean Sense IQ, LED headlights, and DuoClean PowerFins HairPro.
Charging & Battery
The Shark Stratos Cordless Vacuum is powered by a removable Lithium-Ion battery, offering up to 50 minutes of runtime (in ECO mode, measured at the hand vacuum). For optimal performance, ensure the battery is fully charged before each use.
Charging Instructions:
- Charging On-Board: You can charge the battery while it is installed in the vacuum. Connect the charger to the charging port on the handheld vacuum and plug the charger into a wall outlet.
- Charging Off-Board: To charge the battery independently, press the battery release button and slide the battery out. Connect the charger directly to the battery and plug it into a wall outlet.
The LED display on the handheld vacuum will indicate the battery charge status. A full charge typically takes approximately 3.5 hours.

The removable battery charging independently, highlighting the convenience of charging anywhere, alongside a user operating the vacuum.
Operation
Operating your Shark Stratos Cordless Vacuum is intuitive, with features designed for efficient cleaning across various surfaces.
Powering On/Off and Suction Modes:
- Power Button: Press the power button on the handheld vacuum to turn the unit on or off.
- Suction Levels: Use the mode selection button on the LED display to cycle through different suction modes: ECO, Deep Clean, and Boost.
- Clean Sense IQ: When activated, the vacuum automatically detects dirt and adjusts suction power as needed. The indicator on the floor nozzle will change color to show when the area is clean.

Visual representation of the Clean Sense IQ feature, where the vacuum detects unseen dirt and automatically adjusts power for enhanced cleaning.
MultiFLEX Technology:
The MultiFLEX wand allows for versatile cleaning and compact storage:
- Under Furniture Cleaning: Press the MultiFLEX release button on the wand to bend it, allowing you to easily clean under low furniture without bending down.
- Compact Storage: Fold the wand over for freestanding storage, reducing the vacuum's footprint.

Demonstration of the MultiFLEX technology, showing the vacuum bending to clean under furniture and folding for compact, freestanding storage.
DuoClean PowerFins HairPro:
This advanced brushroll system is designed for superior cleaning on both carpets and hard floors, with enhanced hair pickup.
- PowerFins: Provide continuous contact with carpets and floors, digging deep into carpets to remove embedded dirt and directly engaging hard floors for a polished clean.
- Soft Roller: Pulls in fine dust and large particles, giving hard floors a polished look.

Detailed view of the DuoClean PowerFins HairPro system, illustrating the PowerFins for continuous contact on carpets and floors, and the Soft Roller for fine dust and a polished look.
Using Accessories:
The included Crevice Tool is ideal for cleaning tight spaces, corners, and along baseboards. Attach it directly to the handheld vacuum or to the end of the wand for extended reach.

The included crevice tool attached to the handheld vacuum, used for accessing hard-to-reach spaces.
Maintenance
Regular maintenance ensures your Shark Stratos Cordless Vacuum continues to perform at its best. Always turn off and unplug the vacuum before performing any maintenance.
Emptying the Dust Cup:
Empty the XL dust cup frequently to maintain optimal suction power. The dust cup capacity is 0.1 gallons.
- Hold the handheld vacuum over a trash bin.
- Press the dust cup release latch to open the bottom of the dust cup, allowing debris to fall out.
- Close the dust cup until it clicks securely.

The easy-empty XL dust cup being emptied, demonstrating the hygienic debris ejection without direct contact.
Cleaning the Brushrolls:
The self-cleaning brushroll minimizes hair wrap, but occasional inspection and cleaning are recommended.
- Remove any debris or hair that may have accumulated around the brushrolls.
- The PowerFins are designed to be self-cleaning, but if any hair is wrapped, carefully cut it away with scissors.

Comparison illustrating the effectiveness of the self-cleaning brushroll, showing a clean brushroll versus one with tangled hair, emphasizing no more hair wrap.
HEPA Filter Maintenance:
The Anti-Allergen Complete Seal with True HEPA Filtration system requires regular cleaning to maintain its effectiveness.
- Locate the pre-motor foam and felt filters, and the post-motor HEPA filter.
- Rinse the foam and felt filters with water every month, or as needed. Allow them to air dry completely for at least 24 hours before reinstalling.
- Tap the HEPA filter clean every 3 months, or as needed. Do not wash the HEPA filter.

An illustration of the Anti-Allergen Complete Seal with True HEPA Filtration system, showing how it captures and traps dust, allergens, and odor.
Troubleshooting
If you encounter any issues with your Shark Stratos Cordless Vacuum, refer to the following common troubleshooting tips:
| Problem | Possible Cause | Solution |
|---|---|---|
| Vacuum not turning on | Battery not charged or not inserted correctly. | Ensure battery is fully charged and clicked securely into place. |
| Loss of suction | Dust cup full, filters clogged, or blockage in hose/nozzle. | Empty dust cup. Clean foam/felt filters. Check for and clear any blockages. |
| Brushroll not spinning | Blockage in brushroll, or brushroll guard is open. | Remove any debris from brushroll. Ensure brushroll guard is closed. |
| Vacuum shuts off | Overheating due to clogged filters or blockages. | Turn off vacuum, clear blockages, clean filters, and allow to cool for at least 45 minutes. |
Specifications
| Feature | Detail |
|---|---|
| Model Name | Stratos Cordless Stick Vacuum |
| Brand | Shark |
| Form Factor | Stick |
| Color | Red |
| Special Features | Bagless, Duo Clean PowerFins, Self-Cleaning Brushroll, XL Dustcup |
| Included Components | Charger & Crevice Tool |
| Dust Cup Capacity | 0.1 Gallons |
| Battery Type | Lithium-Ion |
| Battery Life | Up to 50 minutes (in ECO mode) |
| Product Dimensions | 10.24 x 13.77 x 51.18 inches |
| Item Weight | 8.9 pounds |
| UPC | 724129286816 |
Warranty & Support
This Shark Stratos Cordless Vacuum (Renewed) comes with a 90-day limited warranty. This warranty covers defects in material and workmanship under normal use.
For warranty claims, technical support, or to purchase replacement parts, please contact Shark customer service. Refer to the contact information provided with your product packaging or visit the official Shark website for the most up-to-date support options.
It is recommended to register your product online to receive updates and support.





