Hobart Welding Products OM-487 manual Adjusting Engine Speed, Checking Fuel Solenoid

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7-7. Adjusting Engine Speed

NOTE

If the engine does not start and stop properly, verify the fuel solenoid is installed properly before adjusting engine speed (see Section A following).

If the engine does not stay at idle speed, verify the throttle solenoid is installed and adjusted properly before adjusting engine speed (see Section B following).

If the engine runs properly but the speeds are incorrect, do not adjust the solenoids. Adjust the engine speed according to the instructions in Section C.

A. Checking Fuel Solenoid

Tools Needed:

7/16 in

10, 14 mm

3

Verify mounting bracket is recessed from edge of engine.

1

2

Tighten mounting screws when solenoid is in correct position.

8

6 5

7

4

YStop engine.

If the engine does not start and stop when using the Engine Control switch, check the position of the fuel solenoid.

Adjusting Fuel Solenoid Position

1Fuel Solenoid

2Stop Screw

3Fuel Solenoid Mounting Screws

.Stop screw is factory-set and should not be adjusted.

When properly adjusted, the solenoid bracket is slightly recessed from the edge of the engine block and the solenoid link- age easily travels between the stop screw and the fuel solenoid internal stop.

If adjustment is necessary, loosen the so- lenoid mounting screws and push the so- lenoid bracket back toward engine as far as possible.

Continue pushing on solenoid bracket in a clockwise direction while tightening mounting screws.

4Shutdown Lever

5Stop screw

6Stop Screw Jam Nut

7Fuel Solenoid Jam Nut

8Plunger

.Stop screw is factory-set and should not be adjusted.

Hold throttle solenoid in idle (energized) position. If shutdown lever is touching or within 1/16 in of stop screw, fuel solenoid is properly adjusted.

If lever is more than 1/16 in. from stop screw, check for clearance between jam nut and fuel solenoid. If there is clearance between jam nut and solenoid, loosen nut and turn plunger clockwise until lever touches stop screw. Retighten nut.

If there is no clearance between jam nut and solenoid, loosen the solenoid mount- ing screws and reposition the solenoid as described at the beginning of this section.

Ref. ST-801 961 / ST-802 649

OM-487 Page 29

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Contents OM-487 ProcessesDescription From Hobart to You Table of Contents Page Arc Welding Hazards Symbol UsageElectric Shock can kill ARC Rays can burn eyes and skinEngine Hazards Moving Parts can cause injury Battery Explosion can BlindEngine Exhaust Gases can kill Engine Heat can cause fireEMF Information Principal Safety StandardsRadiation can cause interference ARC Welding can cause interferenceConsignes DE SÉ Curité Lire Avant Utilisation Signification des symbolesUN Choc É Lectrique peut tuer LES Fumé ES ET LES GAZ peuvent ê tre dangereuxDES Particules Volantes peuvent blesser les yeux LE Soudage peut provoquer un in- cendie ou une explosionDES PIÈ CES Chaudes peuvent provoquer des brû lures graves LE Bruit peut affecter l’ouïe’EXPLOSION DE LA Batterie peut DES Organes Mobiles peuvent provoquer des blessuresLA Chaleur DU Moteur peut pro- voquer un incendie LA Chute DE L’APPAREIL peut blesserInformation sur les champs é lectromagné tiques Principales normes de sé curitéLE Soudage À L’ARC risque de provoquer des interfé rences Consignes relatives aux stimulateurs cardiaquesSymbol Definitions SpecificationsWeld, Power, And Engine Specifications DefinitionsDimensions, Weights, And Operating Angles DimensionsFuel Consumption Exceeding duty cycle can damage unit and void warranty Auxiliary Power CurveDuty Cycle 100% Duty Cycle at 290 Amperes DCCC/DC Mode CC/AC ModeCV/DC Mode Volt-Ampere CurvesInstalling Welding Generator InstallationInstalling Exhaust Pipe Do not lift unit from end Airflow ClearanceEngine Prestart Checks 13 mm Full Diesel Coolant Recovery TankFuel Do not use gasoline. Gasoline will damage engine OilConnecting To Weld Output Terminals Connecting The BatteryAdding Coolant To Radiator Connect negativeRemote 14 Receptacle Information Selecting Weld Cable SizesStop engine Adjusting MIG Weld Puddle ConsistencyTo wet out weld puddle To stiffen weld puddlePlace switch in Run position to operate most Gmaw equipment Do not switch under loadOperating Welding Generator Front Panel Controls1nected to the remote 14 recep- tacle is running Remote Amperage/Voltage ControlAuxiliary power decreases as weld current increases Auxiliary Power Receptacles And Circuit BreakersOpen, contact Factory Authorized Service Agent Operating Auxiliary EquipmentOptional Auxiliary Power Receptacles Gfci Receptacle OptionAustralian Receptacle Option Receptacle Wiring Optional 240 Volt PlugMaintenance Label Maintenance and Troubleshooting20 h Routine Maintenance50 h 75 h400 h 200 h500 h 800 hServicing Air Cleaner Servicing Engine Cooling System Servicing Optional Spark ArrestorStop engine and let cool Fuel Lines Replace fuel lines if cracked or worn Servicing Engine Fuel And Lubrication SystemsAdjusting Fuel Solenoid Position Adjusting Engine SpeedStop screw is factory-set and should not be adjusted Checking Fuel SolenoidChecking Throttle Solenoid Adjusting Throttle SolenoidCheck for non-binding Solenoid in relaxedMaking Engine Speed Adjustments Adjusting Idle SpeedAdjusting Weld/Power Speed Overload Protection TroubleshootingWelding Trouble RemedyCheck and clean air cleaner as necessary see Section Low weld output Check control settingsCheck engine speed, and adjust if necessary see Section See engine manualEngine Auxiliary PowerTrouble Remedy Circuit Diagram For Welding Generator Electrical Diagram201 Wetstacking RUN-IN ProcedureLoad Bank Run-In Procedure Using Load BankDo not touch hot exhaust Run-In Procedure Using Resistance GridBank/grid From flammablesHas this symbol Auxiliary Power GuidelinesSelecting Equipment Grounding Generator To Truck Or Trailer FrameHow Much Power Does Equipment Require? Grounding When Supplying Building SystemsEarth ground if supplying Use ground device as stated in electrical codesApproximate Power Requirements For Farm/Home Equipment Approximate Power Requirements For Industrial MotorsIndustrial Motors Rating Starting Watts Running Watts Farm/Home Equipment Rating Starting Watts Running WattsContractor Rating Starting Watts Running Watts Approximate Power Requirements For Contractor EquipmentHow Much Power Can Generator Supply? Power Required To Start MotorSingle-Phase Induction Motor Starting Requirements KVA/HP x HP xTypical Connections To Supply Standby Power Current Load Watts Amperes Selecting Extension Cord Use Shortest Cord PossibleParts List 56- -380- -2 Main Assembly Dia Part Description 124 Hardware is common Not available unless listed Panel, Front w/ComponentsPanel, Front w/Components -1 Item Generator -1 Item Support ServiceContact your Distributor for Hobart Welding ProductsCall