Introduction
Thank you for purchasing the COWSAR Personal Single Serve Coffee Maker. This compact and efficient appliance is designed to provide you with a quick and convenient way to brew your favorite coffee or tea. Please read this manual thoroughly before first use to ensure proper operation, maintenance, and safety.

Image: The COWSAR Personal Single Serve Coffee Maker, shown with a red coffee mug and the included black insulated travel mug. This illustrates the compact size and the two primary vessels for brewing.
Important Safety Information
Please observe the following safety precautions to reduce the risk of fire, electric shock, and/or injury:
- Read all instructions before using the appliance.
- Do not touch hot surfaces. Use handles or knobs.
- To protect against electric shock, do not immerse cord, plugs, or the appliance in water or other liquid.
- Close supervision is necessary when any appliance is used by or near children.
- Unplug from outlet when not in use and before cleaning. Allow to cool before putting on or taking off parts, and before cleaning the appliance.
- Do not operate any appliance with a damaged cord or plug, or after the appliance malfunctions or has been damaged in any manner. Contact customer service for examination, repair, or adjustment.
- The use of accessory attachments not recommended by the appliance manufacturer may result in fire, electric shock, or injury to persons.
- Do not use outdoors.
- Do not let cord hang over edge of table or counter, or touch hot surfaces.
- Do not place on or near a hot gas or electric burner, or in a heated oven.
- Always attach plug to appliance first, then plug cord into the wall outlet. To disconnect, turn any control to "off", then remove plug from wall outlet.
- Do not use appliance for other than intended use.
- Scalding may occur if the lid is removed during the brewing cycle.
- This appliance is not compatible with K-Cups. It is designed for coffee grounds and tea bags only.
Package Contents
Verify that all items are included in your package:
- COWSAR Personal Single Serve Coffee Maker x1
- Coffee Spoon x1
- 14oz Insulated Travel Mug x1
Product Overview
Familiarize yourself with the components of your coffee maker:
| Component | Description |
|---|---|
| Water Reservoir | Holds water for brewing. |
| Filter Basket | Removable basket for coffee grounds or tea bags. |
| Brew Button | One-touch operation to start the brewing process. |
| Drip Tray | Removable tray to catch drips and support your mug. |
| Travel Mug | 14 oz insulated thermal mug with #304 stainless steel interior. |

Image: The coffee maker with visual indicators for its key features: One-Touch Operation, Compact Design, Quick Brew, and the 14oz Travel Mug.
Setup and First Use
Before using your coffee maker for the first time, follow these steps:
- Unpack: Carefully remove all packaging materials and inspect the coffee maker for any damage.
- Clean Components: Wash the filter basket, travel mug, and coffee spoon in warm, soapy water. Rinse thoroughly and dry. Wipe the exterior of the coffee maker with a damp cloth.
- Initial Rinse Cycle:
- Fill the water reservoir with clean water up to the MAX fill line.
- Place the empty filter basket into its compartment.
- Place the travel mug or another heat-safe mug on the drip tray.
- Press the brew button to start a brewing cycle without coffee grounds.
- Once the cycle is complete, discard the hot water.
- Repeat this rinse cycle 2-3 times to ensure the appliance is clean and ready for use.
Operating Instructions
Follow these steps to brew your coffee or tea:
- Prepare Grounds/Tea Bag:
- Open the lid of the coffee maker.
- For coffee, add your desired amount of coffee grounds (typically 1-2 scoops using the included spoon) into the reusable filter basket. Do not overfill.
- For tea, place a tea bag into the reusable filter basket.
- Ensure the filter basket is properly seated.

Image: A hand demonstrating how to load coffee grounds into the filter basket of the coffee maker using the provided coffee spoon.
- Add Water:
- Pour fresh, cold water into the water reservoir. Do not exceed the MAX fill line. The coffee maker brews the entire amount of water added.
- Close the lid securely.

Image: A hand pouring water into the water reservoir of the coffee maker, illustrating the filling process.
- Place Mug:
- Place the included 14oz travel mug or your preferred heat-safe mug on the drip tray. Ensure it is centered under the dispenser.

Image: The COWSAR coffee maker with its travel mug, demonstrating that the mug is designed to fit most car cup holders, emphasizing portability.
- Start Brewing:
- Plug the coffee maker into a standard electrical outlet.
- Press the brew button. The indicator light will illuminate, and brewing will begin shortly.
- The brewing process is quick, typically taking only a few minutes for a 14oz serving.

Image: The coffee maker in action, with coffee dripping into a red mug, and a hand pressing the brew button, illustrating the one-touch operation.
- Enjoy:
- Once the brewing cycle is complete, the coffee maker will stop dispensing. Unplug the appliance.
- Carefully remove your mug and enjoy your freshly brewed beverage.
Note: This coffee maker does not have an automatic shut-off. Please remember to unplug the unit after each use.
Maintenance and Cleaning
Regular cleaning and maintenance will ensure the longevity and optimal performance of your coffee maker.
Daily Cleaning:
- Always unplug the coffee maker before cleaning.
- Remove the filter basket and rinse it under running water. It is washable and reusable.
- Remove and empty the drip tray. Wash it with warm, soapy water, rinse, and dry.
- Wipe the exterior of the coffee maker with a soft, damp cloth. Do not use abrasive cleaners or scouring pads.
- Do not immerse the coffee maker in water or any other liquid.
Descaling (Monthly or as needed):
Mineral deposits from water can build up over time, affecting performance. Descale your coffee maker regularly, especially if you have hard water.
- Prepare Solution: Mix 1 part white vinegar with 2 parts water. Fill the water reservoir with this solution.
- Run Half Cycle: Place an empty mug on the drip tray. Press the brew button and allow half of the solution to brew through.
- Soak: Turn off the coffee maker and let it sit for at least 30 minutes to allow the solution to work on the mineral deposits.
- Complete Cycle: Turn the coffee maker back on and allow the remaining solution to brew through. Discard the solution.
- Rinse Cycles: Fill the water reservoir with fresh, clean water and run 2-3 full brewing cycles to rinse out any remaining vinegar taste or odor. Discard the water after each cycle.




Images: A sequence illustrating the descaling process, from filling with vinegar solution, brewing and pausing, completing the brew, to rinsing and repeating the process for thorough cleaning.
Troubleshooting
If you encounter issues with your coffee maker, refer to the following table:
| Problem | Possible Cause | Solution |
|---|---|---|
| Coffee maker does not turn on. | Not plugged in; power outlet not working. | Ensure the power cord is securely plugged into a working outlet. Test the outlet with another appliance. |
| Coffee is not brewing. | No water in reservoir; brew button not pressed. | Fill the water reservoir with water. Press the brew button firmly. |
| Coffee tastes weak or too strong. | Incorrect coffee-to-water ratio; coffee grounds too coarse/fine. | Adjust the amount of coffee grounds. Use medium-fine grind for optimal extraction. |
| Brewing is slow or incomplete. | Mineral buildup (scale). | Perform a descaling cycle as described in the Maintenance section. |
| Water leaks from the unit. | Water reservoir overfilled; filter basket not seated correctly. | Do not exceed the MAX fill line. Ensure the filter basket is properly inserted. |
If the problem persists after trying these solutions, please contact COWSAR customer support.
Specifications
| Feature | Detail |
|---|---|
| Brand | COWSAR |
| Model Name | Coffee Maker Machine CM3739 |
| Color | Black |
| Product Dimensions (D x W x H) | 10.24" x 7.17" x 5.2" |
| Item Weight | 2.44 pounds |
| Coffee Maker Type | Drip Coffee Machine, Single-Serve |
| Coffee Input Type | Bag, Disc, Ground (Not K-Cup Compatible) |
| Operation Mode | Fully Automatic (One-Touch) |
| Included Components | Coffee Maker, Coffee Spoon, 14oz Travel Mug |
| Travel Mug Material | #304 Stainless Steel Interior |

Image: The COWSAR coffee maker with its compact dimensions clearly marked, showing a width of 5.16 inches and a height of 10.16 inches.
Warranty and Support
For warranty information or technical support, please contact COWSAR customer service through the retailer where you purchased the product or visit the official COWSAR brand store online.
COWSAR Brand Store: Visit COWSAR Store on Amazon