Introduction
Thank you for choosing the Sebo 350 Mechanical Upright Vacuum Cleaner. This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your appliance. Please read these instructions carefully before first use and keep them 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.
- Read all instructions before using the appliance.
- Do not leave the appliance unattended 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 airflow.
- 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.
Product Overview
Familiarize yourself with the components of your Sebo 350 Mechanical vacuum cleaner.

Figure 1: Front View. This image displays the Sebo 350 Mechanical upright vacuum cleaner from the front, highlighting its main body, handle, and power head.

Figure 2: Back View. This image shows the rear of the vacuum cleaner, including the hose attachment point and accessory storage.

Figure 3: Side View. This image provides a profile view of the vacuum, illustrating its slim design and handle position.
Setup and Assembly
Your Sebo 350 Mechanical vacuum cleaner requires minimal assembly before first use.
- Unpacking: Carefully remove all components from the packaging. Retain packaging for future storage or transport.
- Handle Assembly: Insert the handle into the main body of the vacuum until it clicks securely into place.
- Hose and Tool Attachment: Connect the hose to the designated port. Attach the dusting brush and cleaning wand to their storage locations on the vacuum.
- Power Cord: Unwind the power cord completely before plugging into an electrical outlet.
Operating Instructions
Powering On/Off
Plug the power cord into a suitable electrical outlet. The vacuum is operated via a power switch, typically located on the main body or handle.
Height Adjustment
The Sebo 350 Mechanical features a four-level height adjustment to optimize cleaning performance on various floor types, from hard floors to different carpet pile heights.

Figure 4: Four-Level Height Adjustment. This image illustrates the control for adjusting the brush height, ensuring optimal cleaning on different surfaces.
To adjust, locate the height adjustment control on the power head and select the appropriate setting for your flooring.
Using Attachments
The included dusting brush and cleaning wand can be used for above-floor cleaning, upholstery, and tight spaces. Detach the hose from the main unit and attach the desired tool.
Maintenance
Regular maintenance ensures optimal performance and extends the life of your vacuum cleaner.
Dust Bag and Filter Replacement
The vacuum is equipped with an indicator that signals when the dust bag is full or if there is a clog.

Figure 5: Full Bag or Clog Indicator. This light illuminates to alert the user when the dust bag needs changing or if an obstruction is present.
When the indicator illuminates, replace the dust bag. Refer to the vacuum's compartment for instructions on accessing and replacing the bag. The S-Class filtration system, with HEPA filtration available, requires periodic filter checks and replacement as per manufacturer recommendations.
Brush Strip Removal and Cleaning
To maintain effective cleaning, regularly inspect and clean the brush strip for tangled hair or debris. The brush strip is designed for easy removal.

Figure 6: Easy Brush Strip Removal. This image shows how to easily detach the brush strip for cleaning or replacement, ensuring optimal brush performance.
Follow the instructions in the diagram to remove the brush strip. Use scissors to cut away any tangled hair or threads, then reinsert the brush strip securely.
Cord Replacement
In the event of damage to the power cord, it can be replaced. This procedure should ideally be performed by a qualified service technician.

Figure 7: Cord Replacement Area. This image highlights the section of the vacuum where the power cord connects, indicating the area for potential replacement.
If you need to replace the cord, consult a Sebo authorized service center or refer to detailed service instructions if you possess the necessary technical expertise.
Troubleshooting
This section addresses common issues you might encounter with your Sebo 350 Mechanical vacuum cleaner.
| Problem | Possible Cause | Solution |
|---|---|---|
| Vacuum does not turn on | No power supply; damaged cord/plug; internal fault. | Check if plugged in securely. Test outlet with another appliance. Inspect cord for damage. If damaged, seek professional repair. |
| Loss of suction | Full dust bag; clogged hose/filter; brush roll obstructed. | Replace dust bag. Check for clogs in hose and attachments. Clean or replace filters. Clear brush roll of debris. |
| Brush roll stops rotating | Brush obstruction; motor overload protection activated. | ![]() Figure 8: Brush Obstruction and Automatic Shut-off. This image shows the vacuum's brush roll encountering an obstruction, triggering the automatic shut-off feature to prevent damage. |
| Unusual noise | Foreign object in brush roll/hose; worn motor bearings. | Turn off and unplug. Inspect brush roll and hose for foreign objects. If noise persists, contact customer support. |
Specifications
| Feature | Detail |
|---|---|
| Brand | Sebo |
| Model | 350 Mechanical |
| Power Head Width | 15 inches |
| Filter Type | S-Class (HEPA filtration available) |
| Hose Length | 6.0 feet |
| Included Components | Dusting brush, cleaning wand |
| Maximum Suction | 91.0 inches |
| Noise Level | 76.0 decibels |
| Power Source Type | Corded Electric |
| Surface Recommendation | All floors |
| Wattage | 1000.0 watts |
| Motor Horsepower | 1.34 horsepower |
| Product Dimensions | 13.5 x 10 x 45 inches |
| UPC | 676224199969 |
Warranty and Support
For warranty information, technical support, or to locate an authorized service center, please refer to the warranty card included with your product or visit the official Sebo website. Keep your proof of purchase for warranty claims.






