1. Introduction
Thank you for choosing the AZZUNO MIG-200F 4-in-1 200A Welding Machine. This versatile and portable welding machine integrates FLUX MIG, GAS MIG, MMA (Stick), and LIFT TIG welding methods, designed to meet a wide range of welding needs. Featuring advanced IGBT inverter technology, it ensures stable arc, minimal splashing, and high welding quality. Its compact design, hot start function, and multiple protection features make it an efficient and reliable tool for various applications.
This manual provides essential information for the safe and effective operation, setup, and maintenance of your welding machine. Please read it thoroughly before use and keep it for future reference.

Figure 1: AZZUNO MIG-200F Welding Machine
2. Safety Information
Welding can be dangerous. Always follow safety precautions to prevent injury or death. Read and understand all safety warnings and instructions before operating this machine.
General Safety Precautions:
- Electric Shock: Welding current can kill. Do not touch live electrical parts. Wear dry, insulating gloves and protective clothing. Ensure the workpiece is properly grounded.
- Fumes and Gases: Welding produces fumes and gases that can be hazardous to your health. Work in a well-ventilated area. Use a fume extractor if necessary.
- Arc Rays: Arc rays can burn eyes and skin. Wear a welding helmet with appropriate shade filter. Wear protective clothing (leather gloves, long sleeves, heavy pants).
- Fire and Explosion: Welding sparks and hot metal can cause fires. Keep flammable materials away from the welding area. Have a fire extinguisher readily available.
- Burns: Hot metal and sparks can cause severe burns. Wear protective clothing and gloves.
- Noise: Excessive noise can damage hearing. Wear ear protection.
- Moving Parts: Keep hands and body clear of moving parts like wire feed rollers.
Machine Specific Safety:
- Ensure the machine is connected to a properly rated power supply (100V/220V) and grounded.
- Do not operate the machine if it is damaged or malfunctioning.
- Do not modify the machine or its accessories.
- Keep children and unauthorized personnel away from the welding area.
3. Package Contents
Upon unpacking, please verify that all items listed below are present and undamaged:
- AZZUNO MIG-200F Welding Machine
- User's Manual
- MIG Torch (15AK)
- Electrode Holder
- Ground Clamp
- 110V→220V Adapter
- Hose Band (x2)
- Gas Hose
- Contact Tip (x2)
- Drive Roller
- Hammer/Brush

Figure 2: Included Accessories
4. Product Overview
The AZZUNO MIG-200F is a compact and powerful welding machine. Key features include:
- 4-in-1 Multi-Process: Supports Flux MIG, Gas MIG, MMA, and Lift TIG welding.
- IGBT Inverter Technology: For stable arc and high efficiency.
- Hot Start Function: Improves arc starting performance and reduces adhesion.
- Multiple Protection Functions: Overheating and overload protection for enhanced durability.
- Coating Anti-Static: Reduces static interference for stable operation.
- Portable Design: Lightweight (approx. 14.8 kg / 24 lbs) and compact for easy transport.

Figure 3: 4-in-1 Multi-Process Welder
Control Panel Introduction:
The front panel features intuitive controls for selecting welding modes and adjusting parameters.

Figure 4: Control Panel Layout
- Button For Choosing MMA Welding Method: Selects the MMA (Stick) welding mode.
- Manual Wire Feed: Initiates manual wire feeding for MIG modes.
- Button For Gas Choosing: Selects gas type (CO2, MIX, Flux) for MIG welding.
- Button For Synergy: Activates synergistic control for optimized welding parameters.
- Button For Welding Modes: Cycles through MIG 2T, MIG 4T, MMA, and LIFT TIG modes.
- Voltage Adj. Knob: Adjusts welding voltage.
- Current Adj. Knob: Adjusts welding current.
5. Setup
Power Connection:
- Ensure the welding machine is turned off.
- Connect the power cable to a suitable 100V or 220V power outlet. Use the provided 110V→220V adapter if necessary.
- Verify the power supply matches the machine's requirements to prevent damage.
Wire Spool Installation (MIG/Flux Core):
- Open the side panel of the welding machine.
- Place the wire spool onto the spool holder. The machine is compatible with 1LB-10LBS wire spools.
- Thread the welding wire through the wire feeder mechanism. Ensure the wire is properly seated in the drive roller groove.
- Close the side panel.

Figure 5: Wire Feeding Mechanism
Accessory Connection:
- Ground Clamp: Connect the ground clamp cable to the appropriate terminal on the machine. Attach the clamp securely to the workpiece, ensuring good electrical contact.
- MIG Torch: Connect the MIG torch to the front panel connector. For Gas MIG, connect the gas hose from your gas cylinder (not included) to the machine's gas inlet and secure with hose bands.
- Electrode Holder (MMA): For MMA welding, connect the electrode holder cable to the positive (+) terminal and the ground clamp to the negative (-) terminal.
- TIG Torch (Lift TIG): For Lift TIG welding, connect the TIG torch (not included) to the appropriate terminal.
6. Operating Instructions
Basic Operation Steps:
- Power On: Turn on the welding machine using the main power switch.
- Select Welding Mode: Short press button 'E' (Welding Modes) to cycle through MIG 2T, MIG 4T, MMA, or LIFT TIG.
- Select Wire Diameter (MIG): Short press the 'Inch' button to choose the appropriate wire diameter.
- Select Gas Type (Gas MIG): In Gas MIG mode, short press button 'C' (Gas Choosing) to select CO2 or MIX gas. For Flux MIG, select 'Flux'.
- Adjust Parameters: Use the 'Voltage Adj. Knob' (F) and 'Current Adj. Knob' (G) to set the desired welding voltage and current. Refer to the welding parameter table in the Specifications section for guidance.
- Synergistic Control (Optional): Press button 'D' (Synergy) to activate synergistic control, which automatically optimizes welding parameters based on your selected mode and wire.
- Manual Wire Feed (MIG): Press button 'B' (Manual Wire Feed) to feed wire manually before starting to weld.
- Begin Welding: Ensure all safety gear is worn. Position the torch/electrode and initiate the arc according to the selected welding process.
Video Demonstration:
Watch this video for a visual guide on unboxing, setup, and basic operation of the AZZUNO MIG-200F.
Video 1: Unboxing and Basic Operation Guide
7. Maintenance
Regular maintenance ensures the longevity and optimal performance of your welding machine.
- Cleaning: Regularly clean the machine's exterior with a dry cloth. Use compressed air to blow out dust from the cooling vents.
- Wire Feeder: Inspect the wire feeder rollers for wear and tear. Clean any debris or wire shavings from the wire path.
- Cables and Connections: Check all cables (power, ground, torch) for damage, cuts, or loose connections. Replace damaged cables immediately.
- Contact Tips and Nozzles (MIG): Replace worn contact tips and clean spatter from the nozzle regularly to ensure consistent wire feeding and gas flow.
- Electrode Holder/Ground Clamp: Ensure these accessories are clean and free of corrosion for good electrical contact.
- Storage: Store the machine in a dry, clean environment, away from excessive dust and moisture.
8. Troubleshooting
If you encounter issues with your welding machine, refer to the common problems and solutions below:
| Problem | Possible Cause | Solution |
|---|---|---|
| Machine does not power on | No power supply; Loose power cable; Faulty power switch | Check power outlet and circuit breaker; Ensure power cable is securely connected; Contact support if switch is faulty |
| No arc/Weak arc | Poor ground connection; Incorrect settings; Damaged torch/electrode holder | Ensure ground clamp has good contact; Adjust current/voltage settings; Inspect and replace damaged parts |
| Wire feeding issues (MIG) | Wire tangled; Worn drive roller; Clogged contact tip; Incorrect tension | Untangle wire; Replace drive roller; Clean/replace contact tip; Adjust drive roller tension |
| Overheat protection activated | Exceeded duty cycle; Blocked cooling vents; High ambient temperature | Allow machine to cool down; Clear cooling vents; Work in a cooler environment |
| Poor weld quality | Incorrect parameters; Improper technique; Contaminated workpiece | Adjust voltage/current; Practice welding technique; Clean workpiece thoroughly |
9. Specifications
| Feature | Detail |
|---|---|
| Model | MIG-200F |
| Brand Name | AZZUNO |
| Input Voltage | 100V/220V |
| Rated Output Current | MAX 200A |
| Welding Methods | FLUX MIG, GAS MIG, MMA, LIFT TIG |
| Technology | IGBT Inverter |
| Weight | 14.8 KG (approx. 24 LB) |
| Certification | UL |
| Functions | Hot start, rapid cooling, overload protection, low noise |
| Operating System | Syn collaborative control |
| Wire Compatibility | 1LB-10LBS spools |
| Plug Type | US Plug |
| Smart Device | No |
| Origin | Mainland China |
Welding Parameter Table (MIG-200F)

Figure 6: Welding Parameter Table
10. User Tips
- Start with Lower Settings: If you are new to a specific welding process or material, start with lower current and voltage settings and gradually increase them until you achieve the desired weld.
- Practice Makes Perfect: Dedicate time to practice on scrap materials to get a feel for the machine and different welding techniques.
- Cleanliness is Key: Always ensure your workpiece is clean and free of rust, paint, or oil. Contaminants can lead to poor weld quality and increased spatter.
- Proper Gas Flow (Gas MIG): Maintain the correct gas flow rate for Gas MIG welding to ensure proper shielding and prevent porosity in your welds.
- Wire Stick-Out: Keep a consistent wire stick-out (the length of wire extending from the contact tip) for stable arc and good penetration.
11. Warranty and Support
For warranty information, technical support, or service inquiries, please contact the AZZUNO TOOLS Store directly. Keep your purchase receipt as proof of purchase.



