Owner’s manual
How do I remove the filter from my CRAFTSMAN wet dry vacuum?
To remove the filter on your Craftsman 113177621 wet/dry vacuum, unplug the vac, remove the power head (lid), then release the filter from the filter cage using the center fastener used on your filter style. The exact steps and diagrams are in the 113177621 manual.
- Unplug the vacuum and let the motor stop completely.
- Lift off the power head (lid) to access the filter and filter cage.
- Support the filter with one hand so it does not drop into the drum.
- Loosen the center retainer used on your unit (commonly a filter nut or a quick-lock style retainer).
- Slide the filter straight off the filter cage.
- Reinstall the filter before dry pickup to protect the motor and maintain suction.
The 113177621 manual calls out different filter handling depending on what you are vacuuming.
| What you are picking up | Filter installed? | Why it matters |
|---|---|---|
| Dry debris and dust | Yes; filter must be correctly positioned | Reduces leaks and protects the vac |
| Small amounts of liquid | Filter may stay in place | Keeps setup simple for minor spills |
| Large amounts of liquid | Remove the filter | Prevents saturation and exhaust misting |
- Make sure the filter seats evenly on the filter cage.
- Tighten the center retainer securely (hand-tight is typical).
- Inspect for tears or pinholes; replace a damaged filter immediately.
- Use a dry filter for dry debris; a wet filter clogs quickly with dust.
A properly installed, undamaged filter keeps fine dust from bypassing into the motor area, maintains peak suction, and helps prevent dust blowback from the exhaust.
Last updated: February 2026
What is the list of vacuum cleaner parts?
For the Craftsman wet/dry vacuum model 113177621, the parts list includes the vac assembly (motor housing and drum), hose and nozzles, filter system, casters, power cord and switch, plus accessories used for wet pickup, dry pickup, and blower operation. See the 113177621 owner's manual for the complete breakdown.
These are the most common components referenced in the manual’s assembly, operation, and maintenance sections:
- Motor housing and fan (creates suction and airflow)
- Drum or tank (holds debris and liquids)
- Hose assembly (connects airflow path to tools)
- Utility nozzle and wet nozzle (pickup tools for dry vs. liquid use)
- Filter (removable, cleanable, and replaceable)
- Casters and caster feet (mobility and stability)
- Power cord, polarized plug, switch (electrical supply and control)
If your vac is loud at the exhaust or you want to redirect airflow, this model has a muffler/diffuser option.
| Part | What it does | When to replace |
|---|---|---|
| Shop vacuum noise muffler and diffuser, 2-1/2-in 551002117 | Helps reduce exhaust noise and diffuse airflow | Cracked, missing, or damaged; exhaust is harsh or poorly directed |
Using the correct model number and part ID prevents fit issues.
- Match your model number exactly: 113177621
- Use the part ID when available (example: 551002117)
- Compare the part name to what you’re replacing (hose, nozzle, filter, caster)
- Check whether the vac is set up for wet pickup or dry pickup before ordering filters/accessories
- Confirm the accessory size (this model commonly uses 2-1/2-in accessories)
Wet/dry vacuums use different accessories for liquids vs. dry debris, and the manual also calls out safety and operating limits (for example, avoiding hot ashes, flammable liquids, and toxic materials). Having the correct parts list helps you restore suction, reduce noise, and keep the vac operating safely.
Last updated: February 2026
Where is the model number on a CRAFTSMAN 16 gallon wet dry vac?
On the Craftsman wet/dry vacuum model 113177621, the model and serial number label is located underneath the handle. We recommend writing both numbers down so you can match the correct parts, filters, and accessories later using the 113177621 owner's manual.
- Unplug the wet/dry vacuum for safety.
- Stand behind the unit at the handle.
- Look underneath the handle for the serial/model label.
- Record the model number and serial number in a safe place.
- Use the model number when ordering parts; use the serial number when checking production variations.
Having the model number helps you choose the right replacement parts for your vacuum, especially items that affect fit and performance.
| What you need | Where it’s used | Example for this vacuum |
|---|---|---|
| Model number | Parts lookup and manual match | 113177621 |
| Serial number | Identifying production run details | From the label under the handle |
| Part ID | Ordering the exact part online | 551002117 |
If your vac seems louder than normal or you want to direct exhaust away from you, the exhaust diffuser/muffler is a common replacement item for this model: shop vacuum noise muffler and diffuser, 2-1/2-in 551002117.
Using the exact model number prevents ordering the wrong Craftsman wet/dry vacuum parts (like hoses, filters, or exhaust components) and helps keep suction and airflow performing the way the vacuum was designed.
Last updated: February 2026
