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OPERATING INSTRUCTIONS
Read and understand this entire section before operat- ing your equipment.
SAFETY INSTRUCTIONS
WARNING
Do not attempt to use this equipment until you have thoroughly read all operating and maintenance manu- als supplied with your machine. They include important safety precautions, detailed engine starting, operating and maintenance instructions and parts lists.
ELECTRIC SHOCK can kill.
•Do not touch electrically live parts or electrodes with your skin or wet cloth- ing.
•Insulate yourself from the work and ground.
•Always wear dry insulating gloves.
•Do not use AC welder if your clothing, gloves or work area is damp or if working on, under or inside workpiece.
Use the following equipment:
• Semiautomatic DC constant voltage (wire) welder.
• DC manual (stick) welder.
• AC welder with reduced voltage con- trol.
ARC RAYS can injure eyes and burn skin.
• Wear eye, ear, and body protection.
•Only qualified personnel should install, use or service this equipment.
•Consult instruction manual before operating.
Before operating, read and understand the manu- facurer’s instructions for this equipment and the consumables to be used including the Material Safety Data Sheet (MSDS) and follow your employer’s safety practices.
FUMES AND GASES can be dangerous to your health.
•Keep your head out of fumes.
•Use enough ventilation or exhaust at the arc, or both, to keep the fumes and gases from your breathing zone and general area.
WELDING SPARKS can cause 
fire or explosion.
•Do not weld near flammable material .
•Do not weld on containers that have held flammable material.
MOVING PARTS can injure.
• Keep away from moving parts
•Do not operate with doors open or
guards off.
•Stop engine before servicing.
ENGINE EXHAUST can kill.
• Use in open, well ventilated areas or vent exhaust outside.
ADDITIONAL SAFETY PRECAUTIONS
Always operate the welder with the hinged doors closed as these provide maximum protection from moving parts and insure proper cooling air flow.
Read carefully the Safety Precautions page in the Instruction Manual before operating this machine. Always follow these and any other safety procedures included in this manual and in the engine and com- pressor instruction manuals.
GENERAL DESCRIPTION
The SAE400 or SAE400 WELD’N AIR is a diesel engine driven welding power source. The machine uses a DC generator for DC stick electrode welding and an AC exciter for 115/230 VAC auxiliary power. As a generator it can supply up to 3,000 watts of 115/230 volt AC power. As a welder it provides up to 575 amps of DC constant current output. The belt driven air com- pressor of the SAE400 WELD’N AIR provides 35 CFM at 100 PSI compressed air.
The engine is a 71 Hp (54kw),
SAE400 & SAE400 WELD’N AIR