A Lincoln Welding Machine is a single-phase, 240-volt, portable welder designed for automotive, on-site contractors and maintenance applications. Lincoln Electric was founded in 1895 and its stick welders, TIG welders and MIG welders are used throughout the world. However, as with most machines with multiple components, problems can occur. Whether it is an issue with low gas flow or a faulty gun tip, the problems are fairly easy to remedy.

Weld at a lower-duty cycle if there is no weld output or gas flow when the gun trigger is pulled and the fan is operating normally. Allow the Lincoln welder to cool down. The thermostat may have tripped due to overheating. Inspect the lines for air-flow obstructions. Check the gun trigger connections for damage and replace the trigger, if necessary. Contact Lincoln Electric to replace the trigger or any other parts for your welder.

Verify that the power switch is on if there is no wire feed, weld output or flow of gas when the gun trigger is pulled and the fan is not operating. Reset the circuit breaker.

Check to see that the drive rolls are correctly installed if the drive motor is running and there is no wire feed when you pull the gun trigger. Ensure that the contact tip and cable liner are the correct size for the Lincoln welder and free of obstructions or clogs.

Ensure there is adequate gas supply if there is low or no gas flow when the gun trigger is pulled and the wire feed and fan are operating. Inspect the flow regulator and gas hoses for any damage, and examine the gun connection to the machine for any obstructions or leaky seals.

Check the gun tip for wear and tear or damage if the weld arc is unstable or if you are having difficulty starting the gun. Ensure that the gun tip is the correct size for the gun. Inspect the work cable for loose or faulty connections.


If you are still unable to get the welder operating correctly, contact Lincoln Electric.


Always turn the welding machine off during maintenance unless the maintenance requires it to be running.

Operate the welding machine in areas that are well-ventilated.

Always wear safety goggles and gloves when welding.

Do not place your hand near the engine fan when the engine is running.

Do not cool the electrode by dipping it in water.

Remove fire hazards from the welding area. If this is not possible, cover the fire hazard to prevent the welding sparks from starting a fire.

Do not weld near hydraulic lines.