1. Introduction
Thank you for choosing the STANLEY SL18116P 6 Gallon Wet Dry Vacuum. This versatile 3-in-1 unit is designed for powerful suction and efficient cleaning of both wet and dry debris, and also functions as a blower. With a 4 peak horsepower motor and a 6-gallon capacity, it is suitable for various cleaning tasks in workshops, garages, basements, and job sites. Please read this manual thoroughly before operating the vacuum to ensure safe and effective use.
2. Important Safety Information
WARNING: Read and understand all instructions before using this vacuum cleaner. Failure to follow the warnings and instructions may result in electric shock, fire, or serious injury.
- Always disconnect the plug from the power outlet before making adjustments, changing accessories, or storing the vacuum.
- Do not leave the vacuum unattended when plugged in. Unplug from outlet when not in use and before servicing.
- Do not use with a damaged cord or plug. If the vacuum 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 vacuum over cord. Keep cord away from heated surfaces.
- 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 filters in place.
- Use only as described in this manual. Use only manufacturer’s recommended attachments.
- Keep hair, loose clothing, fingers, and all parts of body away from openings and moving parts.
- Do not pick up toxic materials.
- Do not use outdoors or on wet surfaces.
3. What's Included
The STANLEY SL18116P Wet Dry Vacuum comes with the following components:

This image displays the complete set of accessories included with your STANLEY SL18116P wet dry vacuum, laid out for easy identification.
- 1 x STANLEY SL18116P Wet / Dry Vac Unit
- 1 x 1-1/4" x 6’ Super Flexible Hose
- 3 x Extension Wands
- 1 x Gulper Nozzle
- 1 x Floor Nozzle
- 1 x Crevice Nozzle
- 1 x Foam Filter (for wet use)
- 1 x Dust Bag (for dry use)
- 1 x Reusable Dry Filter (for dry use)
- 1 x Clamp Ring
- 1 x User Manual
4. Assembly and Setup
4.1 Attaching the Casters
- Invert the vacuum tank.
- Insert the caster stems into the holes on the bottom of the tank. Push firmly until they click into place.
- Ensure all four casters are securely attached for stable movement.
4.2 Filter Installation
The type of filter required depends on whether you are performing wet or dry vacuuming.
For Dry Vacuuming:
- Remove the motor head from the tank.
- Install the reusable dry filter over the filter cage, ensuring it covers the entire cage. Secure it with the clamp ring.
- For fine dust, you may also insert the disposable dust bag into the tank, aligning the cardboard collar with the inlet port.
- Replace the motor head, ensuring the latches are securely fastened.
For Wet Vacuuming:
- Remove the motor head from the tank.
- Remove any dry filters or dust bags.
- Slide the foam filter over the filter cage, ensuring it is fully seated.
- Replace the motor head, ensuring the latches are securely fastened.
4.3 Attaching the Hose and Accessories
- Insert the large end of the flexible hose into the vacuum inlet port on the front of the tank. Twist to secure.
- Attach desired accessories (extension wands, floor nozzle, gulper nozzle, crevice nozzle) to the other end of the hose.

This image illustrates the convenient on-board storage for accessories and demonstrates the application of the crevice and gulper nozzles for different cleaning tasks.
5. Operating Instructions
5.1 Dry Vacuuming
Ensure the reusable dry filter and/or dust bag is correctly installed. Plug the power cord into a suitable electrical outlet. Turn the vacuum ON using the power switch. Guide the appropriate nozzle over the dry debris to be collected. The vacuum's strong suction efficiently picks up dust, dirt, and other dry materials.

This image highlights the vacuum's strong suction capability, showing the crevice tool effectively cleaning debris from a sofa.
5.2 Wet Vacuuming
Ensure the foam filter is correctly installed and any dry filters or dust bags are removed. Plug the power cord into a suitable electrical outlet. Turn the vacuum ON. Guide the appropriate nozzle over the liquid spill. The vacuum will collect the liquid into the tank. Do not overfill the tank; the float mechanism will shut off suction when the tank is full. Turn off the vacuum and empty the tank immediately after wet use.
5.3 Blower Function
To use the blower function, disconnect the hose from the vacuum inlet port. Insert the hose into the blower port located on the motor head. Ensure the hose is securely fastened. Turn the vacuum ON. The vacuum will now function as a powerful blower, useful for clearing leaves or debris from surfaces.

This image illustrates the vacuum's versatile 3-in-1 function, showing it in operation with the floor nozzle for general cleaning.
5.4 Maneuverability
The STANLEY SL18116P is equipped with four swivel casters, allowing for easy movement across various surfaces during cleaning tasks. The 16 ft cleaning reach (6 ft hose + 10 ft power cord + extension wands) minimizes the need to frequently unplug the unit.

This image demonstrates the vacuum's easy maneuverability, showing it being pulled across a carpeted floor during operation.
6. Maintenance
Regular maintenance ensures optimal performance and extends the life of your vacuum.
6.1 Emptying the Tank
- Unplug the vacuum from the power outlet.
- Unlatch the motor head and carefully lift it off the tank.
- Pour out any collected liquids or dispose of dry debris.
- Clean the inside of the tank with water and mild soap if necessary, then rinse thoroughly and allow to dry completely before reassembly.
6.2 Filter Cleaning and Replacement
Foam Filter (Wet Use):
After wet vacuuming, remove the foam filter and rinse it thoroughly with water. Squeeze out excess water and allow it to air dry completely before reinstalling or storing.
Reusable Dry Filter (Dry Use):
For dry vacuuming, periodically remove the reusable dry filter and gently tap it to dislodge dust. For heavier buildup, rinse with water and allow to air dry completely before reinstalling. Replace if damaged or if suction performance decreases significantly.
Disposable Dust Bag (Dry Use):
Replace the disposable dust bag when it is full or when suction performance noticeably drops. Do not attempt to reuse or clean disposable bags.
6.3 Accessory Storage
The vacuum features on-board storage for accessories, allowing for convenient organization of extension wands, nozzles, and the power cord. Wrap the power cord around the designated cord wraps on the motor head.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Vacuum does not start | No power to outlet Power cord not plugged in Faulty power switch | Check circuit breaker/fuse Ensure cord is firmly plugged into a working outlet Contact customer support |
| Loss of suction | Hose or nozzle clogged Filter is dirty or clogged Tank is full (wet vacuuming) Motor head not sealed properly | Clear obstruction from hose/nozzle Clean or replace filter Empty the tank Ensure motor head latches are secure |
| Water coming from exhaust | Tank is overfilled (wet vacuuming) Foam filter not installed or damaged | Empty the tank immediately Install or replace foam filter |
| Excessive noise | Obstruction in motor Damaged motor | Turn off and unplug, check for obstructions. If problem persists, contact customer support. |
8. Specifications

This image provides a visual representation of the STANLEY SL18116P wet dry vacuum's portable size and key dimensions.
- Model: SL18116P
- Capacity: 6 Gallons (approx. 22 Liters)
- Motor Horsepower: 4 Peak HP
- Voltage: 120 Volts
- Wattage: 1200 Watts
- Amperage: 10 Amps
- Power Source: Corded Electric
- Functions: Wet Vacuum, Dry Vacuum, Blower
- Filter Type: HEPA Filter (Reusable Dry Filter), Foam Filter (Wet Use)
- Hose Length: 6 ft (1.8 m)
- Power Cord Length: 10 ft (3 m)
- Total Cleaning Reach: Over 16 ft
- Item Weight: 13.8 Pounds (6.26 kg)
- Item Dimensions (L x W x H): 13.8" x 13.8" x 20.47" (35 cm x 35 cm x 52 cm)
- Wheels: 4 Swivel Casters
- Indoor/Outdoor Usage: Indoor
9. Warranty and Support
9.1 Limited Warranty
This STANLEY SL18116P Wet Dry Vacuum is covered by a 12-Month Limited Warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage resulting from misuse, abuse, accident, unauthorized repairs, or lack of reasonable maintenance.
Please retain your proof of purchase for warranty claims.
9.2 Customer Support
For technical assistance, warranty inquiries, or to order replacement parts, please refer to the contact information provided on the product packaging or the official STANLEY website. When contacting support, please have your model number (SL18116P) and date of purchase readily available.





