Introduction
Thank you for choosing the TaskStar K-903 Cordless 2.6 Gallon Wet/Dry Shop Vacuum. This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your new vacuum. Please read it thoroughly before first use and keep it for future reference.
Important Safety Instructions
Always follow basic safety precautions when using electrical appliances to reduce the risk of fire, electric shock, or injury. This includes:
- Read all instructions before using the appliance.
- Do not leave appliance when plugged in. Unplug from outlet when not in use and before servicing.
- Do not use outdoors or on wet surfaces.
- Do not allow to be used as a toy. Close attention is necessary when used by or near children.
- Use only as described in this manual. Use only manufacturer’s recommended attachments.
- Do not use with damaged cord or plug. If appliance is not working as it should, has been dropped, damaged, left outdoors, or dropped into water, return it to a service center.
- Do not pull or carry by cord, use cord as a handle, close a door on cord, or pull cord around sharp edges or corners. Do not run appliance over cord. Keep cord away from heated surfaces.
- Do not unplug by pulling on cord. To unplug, grasp the plug, not the cord.
- Do not handle plug or appliance with wet hands.
- Do not put any object into openings. Do not use with any opening blocked; keep free of dust, lint, hair, and anything that may reduce air flow.
- Keep hair, loose clothing, fingers, and all parts of body away from openings and moving parts.
- Do not pick up anything that is burning or smoking, such as cigarettes, matches, or hot ashes.
- Do not use to pick up flammable or combustible liquids, such as gasoline, or use in areas where they may be present.
- Do not use without dust bag and/or filters in place.
- Turn off all controls before unplugging.
- Use extra care when cleaning on stairs.
Included Components
Your TaskStar K-903 Cordless Wet/Dry Vacuum package includes the following items:
- Cordless Wet/Dry Vacuum x1
- 4000mAh Battery x2
- Charger x1
- Accessory Storage Holder x1
- Extension Tube x3
- Crevice Tool x1
- Round Brush x1
- Wide Nozzle Tool x1
- Instruction Manual x1
- Shoulder Strap x1
- Wheel x4

Image: All components included in the TaskStar K-903 package, laid out neatly.
Setup
1. Attaching the Wheels
Insert the four wheels into the designated slots on the bottom of the vacuum unit until they click securely into place. Ensure all wheels rotate freely.
2. Assembling the Hose and Accessories
Connect the flexible hose to the suction port on the vacuum. Attach the desired nozzle (crevice tool, round brush, or wide nozzle tool) directly to the hose or by using the extension tubes for extended reach. The accessory storage holder can be attached to the side of the vacuum to keep tools organized.

Image: The TaskStar K-903 vacuum with its accessory storage holder, showing the crevice tool, round brush, and wide nozzle tool.
3. Charging the Batteries
Before first use, fully charge both 4000mAh batteries using the provided charger. The charging process typically takes 2-2.5 hours per battery. Insert the charged batteries into the battery slots on the vacuum unit.

Image: A graphic illustrating the battery runtime: 40 minutes on low gear and 20 minutes on high gear for the 2x4000mAh batteries.
Video: An official product video from TaskStar demonstrating the features of the Cordless Shop Vac, including battery usage and various functions.
Operating Instructions
1. Powering On/Off and Suction Modes
Press the power button to turn the vacuum on. The K-903 features two suction modes: a low gear (9kPa) for daily cleaning and a high gear (15kPa) for tougher dirt. Toggle between modes using the dedicated button on the unit.

Image: A visual representation of the two suction modes available: Low Gear at 9kPa and High Gear at 15kPa, showing their effectiveness on different debris.
2. 3-in-1 Cleaning System: Wet, Dry, and Blow
The TaskStar K-903 is designed for versatile cleaning:
- Dry Suction: Use for general debris, dust, and particles. Ensure the HEPA filter is clean and properly installed.
- Wet Suction: For liquid spills, remove the HEPA filter before use to prevent damage. Empty the tank promptly after wet use.
- Blowing Function: Attach the hose to the exhaust port to use the vacuum as a blower for clearing leaves or sawdust.

Image: A woman demonstrating the dry suction function of the 3-in-1 cordless vacuum, with smaller images illustrating its wet suction and blowing capabilities.

Image: A person using the vacuum to clean a liquid spill on a kitchen counter, highlighting its wet suction capability.

Image: A man utilizing the vacuum's blowing function to clear fallen leaves from a pathway outside a house.
3. Using Accessories
Select the appropriate accessory for your cleaning task:
- Crevice Tool: Ideal for tight spaces, corners, and edges (e.g., car interiors, between cushions).
- Round Brush: Suitable for delicate surfaces, upholstery, and removing pet hair.
- Wide Nozzle Tool: Effective for larger areas and general dry or wet pickup.
- Extension Tubes: Connect to the hose for extended reach, useful for floors or high areas.
- Shoulder Strap: Attach for convenient portability, especially when cleaning in elevated or hard-to-reach locations.

Image: A hand using the crevice tool to clean small debris from a tight spot in a car's interior.

Image: A hand using the brush nozzle to clean dust from a car's air vent, demonstrating its utility for delicate areas.

Image: A hand using the wide nozzle tool to clean dirt and debris from a car's floor mat.
4. Power Tool Integration
The vacuum can be connected to compatible power tools for dust extraction during operation, keeping your workspace clean.

Image: The TaskStar K-903 vacuum connected to a power tool, demonstrating its use for dust extraction during woodworking tasks.
Maintenance
1. Cleaning the HEPA Filter
The HEPA filter traps 99.7% of dirt particles and is washable and reusable. Regular cleaning ensures optimal performance and prolongs motor life.
- Release the screws to take out the filter from the vacuum unit.
- Wash off the filter with tap water until clean.
- Dry the filter completely before reinstallation. Do not place it in direct sunlight.
- Assemble the vacuum cleaner by reinserting the dry filter and securing the screws.

Image: A four-step visual guide demonstrating the process of cleaning the HEPA filter: releasing screws, washing with water, drying, and reassembling the vacuum.
2. Emptying the Tank
For dry debris, empty the tank when it is full or suction power decreases. For wet spills, empty the tank immediately after use to prevent odors and mold growth.
3. General Cleaning and Storage
Wipe the exterior of the vacuum with a damp cloth. Store the vacuum and its accessories in a cool, dry place, away from direct sunlight and extreme temperatures. The compact design allows for vertical self-standing storage.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Low or no suction |
|
|
| Vacuum does not turn on |
|
|
| Water leaks during wet use |
|
|
| Reduced blowing power |
|
|
Specifications
| Feature | Detail |
|---|---|
| Brand | TaskStar |
| Model Name | K-903 |
| Capacity | 2.6 Gallons |
| Power Source | Battery Powered (2x 4000mAh batteries) |
| Voltage | 21 Volts |
| Wattage | 200 watts |
| Suction Modes | 2 (9kPa Low Gear, 15kPa High Gear) |
| Runtime | Up to 40 minutes (Low Gear), 20 minutes (High Gear) |
| Filter Type | Washable HEPA Filter |
| Item Weight | 9 Pounds |
| Item Dimensions (L x W x H) | 16" x 12" x 14" |
| Indoor/Outdoor Usage | Yes |
| Included Components | Cordless Wet/Dry Vacuum, 2x 4000mAh Batteries, Charger, Accessory Storage Holder, 3x Extension Tubes, Crevice Tool, Round Brush, Wide Nozzle Tool, Shoulder Strap, 4x Wheels, Instruction Manual |
Warranty and Support
For warranty information, product support, or to purchase replacement parts, please refer to the contact information provided with your purchase or visit the official TaskStar website. Keep your proof of purchase for warranty claims.