Lincoln Electric SVM103-A service manual Engine Operation, Before Starting the Engine

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B-5

OPERATION

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7.AIR MIXTURE ADJUSTMENT SCREW: Adjusts the amount of air mixed with fuel to obtain the smoothest operation under load or at idle. The POWER-ARC 4000 is shipped with the proper adjustment already set. DO NOT ADJUST THE

AIR MIXTURE SCREW WITHOUT FOLLOWING THE PROCEDURES OUTLINED BY BRIGGS & STRATTON.

8.RECOIL STARTER: Manual, rope-type starter. The handle position allows easy starting from either ground level or pickup-truck level.

9.CHOKE: Provides a richer air/fuel mixture for cold engine starting con- ditions. See the topic ENGINE OPERATION, below, for details on setting the choke.

10.FUEL MIXTURE ADJUSTMENT SCREW: Adjusts the amount of fuel mixed with air to obtain the smoothest operation under load or at idle. The POWER-ARC 4000 is shipped with the proper adjustment already set. DO NOT ADJUST THE

FUEL MIXTURE SCREW WITHOUT FOLLOW- ING THE PROCEDURES OUTLINED BY BRIG- GS & STRATTON.

11.OIL DRAIN PLUG: Permits convenient draining of engine oil during maintenance. Both sides of the engine are equipped with an oil drain plug.

12.OIL FILL PLUG: Permits convenient filling of engine oil during maintenance. Both sides of the engine are equipped with an oil fill plug.

ENGINE OPERATION

WARNING

DO NOT RUN THE ENGINE AT EXCESSIVE SPEEDS. The maximum allowable high idle speed for the POWER-ARC 4000 is 3750 RPM, no load. Do NOT adjust the governor screw on the engine. Severe per- sonal injury and damage to the machine can result if it is operated at speeds above the maximum rated speed.

Read and understand all safety instructions included in the Briggs & Stratton Operating and Maintenance Instructions manual that is shipped with the POWER- ARC 4000.

BEFORE STARTING THE ENGINE

CHECK AND FILL THE ENGINE OIL LEVEL:

1. Place the machine on a level surface.

2.Open the oil fill plug.

3.Fill (if necessary) until oil flows out the top of the fill plug hole.

4.Replace the fill plug and tighten securely.

CHECK AND FILL THE ENGINE FUEL TANK:

1.Remove the fuel tank cap.

2.Fill the tank to allow approximately 1/4 inch (5 mm) of tank space for fuel expansion. DO NOT FILL THE TANK TO THE POINT OF OVERFLOW.

3.Replace the fuel tank cap and tighten securely.

NOTE: The engine will operate satisfactorily on any gasoline meant for automotive use. A mini- mum of 87 octane is recommended. DO NOT MIX OIL WITH THE GASOLINE.

Use clean, fresh, lead-free gasoline. Leaded gasoline may be used if lead-free is not available. However, lead-free gasoline leaves fewer combustion deposits and gives longer valve life. For engine protection from fuel deposits, use Briggs & Stratton Gasoline Additive, part number 5041. Purchase gasoline in quantities that will be used within 30 days, to assure freshness.

NOTE: We DO NOT recommend using gasoline that contains alcohol, such as gasohol. However, if gasoline with alcohol is used, it MUST NOT contain more than 10% Ethanol and MUST be removed from the engine during storage. DO NOT use gasoline containing Methanol.

STARTING THE ENGINE

NOTE: Remove all loads connected to the AC power receptacles before starting the gasoline engine.

FOR A “COLD” ENGINE:

1.Open the fuel shutoff valve on the bottom of the fuel tank.

2.Place the choke lever in the lowest, downward position.

3.Pull slightly on the recoil starter handle until resistance is felt.

POWER-ARC 4000

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Contents POWER-ARC TM4000 Safety POWER-ARCElectric Shock can kill Welding Sparks can cause fire or explosion IiiPrécautions DE Sûreté Master Table of Contents for ALL Sections Table of Contents Installation Section Installation Technical Specifications POWER-ARCStoring Safety PrecautionsLocation and Ventilation PRE-OPERATION Engine Service Power ARC Electrical Output ConnectionsWelding Cable Connections Cable Size and LengthAuxiliary Power Receptacles Cable InstallationMachine Grounding Plugs and HAND-HELD EquipmentPremises Wiring Circuit BreakersTable A.2 Electrical Device USE with the POWER-ARC Type Common Electrical Devices Possible ConcernsTable of Contents Operation Section Safety Instructions OperationOperating Instructions General DescriptionOperational Features and Controls Design Features AdvantagesRecommended Applications Welding CapabilityControls and Settings GENERATOR/WELDER ControlsFigure B.2 Gasoline Engine Controls Gasoline Engine ControlsStarting the Engine Engine OperationBefore Starting the Engine BREAK-IN Period Stopping the EngineRunning the Engine General Information To USE the Generator AS AN Auxiliary Power SupplyGenerator Operation Table B.3 Generator Power Applications After YOU Finish the Weld To USE the POWER-ARC 4000 for WeldingWelding Operation Stick Welding Material Thickness Electrode Type Size SettingWelding Guidelines Welding Circuit ARC12/95 POWER-ARC Four Factors of Successful WeldingElectrode Correct WAY to Strike AN ARCCorrect ARC Length Correct Welding SpeedTable of Contents Accessories Briggs and Stratton Accessories OPTIONS/ACCESSORIESLincoln Electric Accessories Table of Contents Maintenance Routine and Periodic Maintenance Engine MaintenanceFigure D.2 Clean Rotating SCREEN/FINGER GUARD/DEBRIS Guard Figure D.4 SET Spark Plug GAP Part Part Number Table D.2 Engine Maintenance PartsGENERATOR/WELDER Maintenance Figure D.6. Major Component Locations Table of Contents Theory of Operation Section Theory of Operation ENGINE, EXCITATION, Rotor and StatorRotor Field Feedback and Auxiliary Power Figure E.3 Field Excitation and Auxiliary PowerAuxiliary Power Overcurrent Protection Weld Winding and ReactorTable of Contents Trouble Shooting & Repair Section Troubleshooting & Repair HOW to USE Troubleshooting GuideTroubleshooting Guide Output ProblemsOr contact your local Lincoln Local Lincoln Electric Authorized Troubleshooting & Repair Troubleshooting & Repair Engine Problems Engine Problems Welding Problems Materials Needed Rotor Voltage TestTest Description Test Procedure Ground Stud Lead 200A Connection Output PanelRotor Resistance Test Slip RingsFigure F.3 Brushes Retained with Cable TIE Cable TIE BrushesEngine Throttle Adjustment Test Mark Strobe-tach MethodFrequency Counter Method Oscilloscope MethodFigure F.5 Location of Engine Throttle Adjustment NUT NUTHigh Idle no Load Scope SettingsNormal Open Circuit Weld Voltage Waveform Normal Open Circuit Voltage Waveform 115 VAC Supply Machine Loaded to 125 Amps AT 23 VAC Typical Weld Output WaveformMachine Loaded Brush Removal and Replacement DescriptionProcedure Figure F.6 Brushes Retained with Cable TIEProcedure Rheostat Removal and Replacement Figure F.7 Rheostat Removal Capacitor AND/OR Diode Bridge Removal Replacement Capacitor AND/OR Diode Bridge Removal and Replacement Procedure Capacitor Removal and ReplacementProcedure Diode Bridge Removal and Replacement STATOR/ROTOR Removal and Replacement InstructionsStator Removal Procedure TIE WrapOutput TerminalsThru Bolts Support Nuts POWER-ARC Figure F.10 Stator END Bracket Support and THRU-BOLTSRotor THRU-BOLT Rotor Removal ProcedureReassembly Procedure Feeler Gauge RotorAuxiliary Power Receptacle OUTPUT1 Retest After RepairEngine Output WELDER/GENERATOR OUTPUT1POWER-ARC Section G Table of ContentsElectrical Diagrams Electrical Diagram POWER-ARCPOWER-ARC POWER-ARC
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