Introduction
Thank you for purchasing the leowin ZM-6656 Portable Tire Inflator. This device is designed for convenient and efficient inflation of various items, including car tires, motorcycle tires, bicycle tires, and sports balls. Please read this manual thoroughly before use to ensure safe and optimal operation.
Safety Warnings
- Do not leave the inflator unattended during operation.
- Keep out of reach of children.
- Avoid prolonged continuous operation to prevent overheating. Allow the device to cool down if it becomes hot.
- Ensure the correct pressure is set for the item being inflated to prevent over-inflation and potential damage or injury.
- Do not operate in wet conditions or near flammable liquids/gases.
- Use only the provided accessories and power adapters.
Package Contents
Verify that all items are present in the package:
- leowin ZM-6656 Portable Tire Inflator
- Air Hose
- USB Charging Cable
- 12V Car Power Adapter
- Short Tapered Nozzle
- Long Tapered Nozzle
- Presta Valve Adapter
- Needle Adapter
- Storage Bag (if included)
- User Manual (this document)

Product Overview
Familiarize yourself with the components of your tire inflator:

Key Components:
- Digital Display: Shows real-time pressure, preset pressure, and selected mode.
- Control Buttons: Power, Mode selection, Increase/Decrease pressure.
- Air Hose Connection: Point for attaching the flexible air hose.
- LED Light: For illumination in low-light conditions.
- USB-C Input Port: For charging the internal battery.
- USB-A Output Port: For charging external devices (power bank function).
Setup
1. Charging the Device
Before first use, fully charge the inflator's internal battery. The device can be charged via the included USB-C cable or the 12V car power adapter.
- Using USB-C Cable: Connect the USB-C end of the cable to the inflator's input port and the USB-A end to a compatible USB power adapter (not included) or computer port.
- Using 12V Car Power Adapter: Connect the 12V adapter to the inflator's input port and plug the other end into your vehicle's 12V accessory socket.
The battery indicator on the digital display will show charging status. A full charge is indicated when all segments of the battery icon are lit.

2. Attaching the Air Hose and Nozzle
Screw the flexible air hose securely onto the inflator's air outlet. Select the appropriate nozzle adapter for your inflation task and screw it onto the other end of the air hose.
Operating Instructions
1. Powering On/Off
To power on the device, press and hold the power button (Ⓘ) for a few seconds. The digital display will illuminate. To power off, press and hold the power button again.

2. Setting Pressure Units
With the device powered on, short press the 'M' (Mode) button to cycle through available pressure units: PSI, BAR, KPA, KG/CM². Select your desired unit.
3. Selecting Preset Modes
The inflator features 5 preset modes for common items. Short press the 'M' button repeatedly to cycle through these modes:
- Bicycle
- Motorcycle
- Car
- Ball
- Custom (manual setting)
Each mode has a default preset pressure. You can adjust this preset pressure using the '+' and '-' buttons.

4. Custom Pressure Setting
If none of the preset modes are suitable, select the 'Custom' mode. Use the '+' and '-' buttons to manually set your desired target pressure.
5. Inflation Process
- Connect the appropriate nozzle adapter to the item's valve (e.g., tire valve, ball needle).
- Ensure the connection is secure to prevent air leakage.
- The digital display will show the current pressure of the item.
- Set your desired target pressure using the mode and '+' / '-' buttons.
- Press the power button (Ⓘ) to start inflation.
- The inflator will automatically stop once the preset target pressure is reached.
- Carefully disconnect the nozzle from the item's valve.

6. Using the LED Light
Short press the LED light button (often integrated with the power button or a separate light icon) to turn on the built-in LED light. This is useful for illuminating your work area in low-light conditions. Press again to turn off.
7. Using as a Power Bank
The inflator can serve as an emergency power bank. Connect your electronic device (e.g., smartphone) to the USB-A output port using a compatible USB cable. The inflator will begin charging your device.
Maintenance
- Cleaning: Wipe the device with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Storage: Store the inflator in a cool, dry place, away from direct sunlight and extreme temperatures. Ensure the battery is partially charged (around 50%) if storing for extended periods to prolong battery life.
- Hose and Nozzles: Keep the air hose and nozzle adapters clean and free from debris.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Low battery or no charge. | Charge the device using the USB-C cable or 12V car adapter. |
| Inflator not inflating. | Air hose not securely connected; wrong mode selected; target pressure already reached. | Ensure hose is tight. Check selected mode and target pressure. Verify current pressure. |
| Air leaks during inflation. | Loose connection between hose/nozzle and valve. | Tighten all connections. Ensure the correct nozzle is used for the valve type. |
| Device overheats and shuts off. | Prolonged continuous operation. | Allow the inflator to cool down for at least 15-20 minutes before resuming use. |
| Inaccurate pressure reading. | Sensor calibration issue or external factors. | Ensure the device is on a stable surface. Compare with a known accurate gauge if possible. |
Specifications
| Feature | Detail |
|---|---|
| Model | ZM-6656 |
| Brand | leowin |
| Maximum Pressure | 150 PSI |
| Air Flow Capacity | 25 Liters Per Minute |
| Battery Capacity | 4,000mAh (Rechargeable Lithium-ion) |
| Input Voltage | 7.4 Volts |
| Power Source | Battery Powered, 12V Car Power Adapter |
| Noise Level | 75 Decibels |
| Accuracy | ±1 PSI |
| Product Dimensions | 8.7 x 5.27 x 2.4 inches |
| Item Weight | 1.41 pounds |
| Special Features | LED Light, Portable, Automatic Shut-Off, Cordless, Quick Inflation, Power Bank Function |
Warranty and Support
Warranty Information
The leowin ZM-6656 Portable Tire Inflator comes with a 1-year manufacturer's warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage caused by misuse, accident, unauthorized modification, or neglect.
Customer Support
For technical assistance, warranty claims, or any questions regarding your leowin product, please contact our customer support team. Refer to the product packaging or the official leowin website for the most current contact information.
Please have your model number (ZM-6656) and proof of purchase ready when contacting support.