Miller Electric 250 manual Adjusting Engine Speed, Checking Fuel Solenoid

Page 39

. A complete Parts List is available at www.MillerWelds.com

9-4. Adjusting Engine Speed

. 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

! Stop 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. 804 250-A / 802 649

OM-217 455 Page 35

Image 39

Contents 2007−05−21 OM-217 455HFile Engine Drive Visit our website atFrom Miller to You Table of Contents 13-5 13-213-3 13-4HOT Parts can cause severe burns Symbol UsageArc Welding Hazards Electric Shock can killWelding can cause fire or explosion Fumes and Gases can be hazardousBuildup of GAS can injure or kill ARC Rays can burn eyes and skinCompressed Air Hazards Engine HazardsFalling Unit can cause injury Welding Wire can cause injuryHOT Parts can cause burns and injury Fire or Explosion hazardRadiation can cause interference Principal Safety StandardsCalifornia Proposition 65 Warnings EMF InformationIndique des instructions spécifiques Signification des symboles− Consignes DE Sécurité − Lire Avant Utilisation UN Choc Électrique peut tuerDES Pièces Chaudes peuvent provoquer des brûlures graves LES Fumées ET LES GAZ peuvent être dangereuxLE Soudage peut provoquer un in cendie ou une explosion LE Bruit peut affecter l’ouïe ’EXPLOSION DE LA Batterie peuDES Organes Mobiles peuvent pro voquer des blessures LA Chaleur DU Moteur peut pro- voquer un incendie ’AIR Comprimé peut provoquer des blessuresRisque D’INCENDIE OU D’EXPLO- Sion ’EMPLOI Excessif peut LE Surchauffement peut endom- mager le moteur électriqueDES Organes Mobiles peuvent provoquer des blessures LES Fils DE Soudage peuvent provoquer des blessuresEn ce qui concerne les implants médicaux Proposition californienne 65 AvertissementsPrincipales normes de sécurité Information EMF− Definitions − SpecificationsSymbol Definitions Weld, Power, and Engine SpecificationsDimensions, Weights, and Operating Angles Dimensions For Units With Optional Running GearDimensions Mounting − InstallationInstalling Welding Generator Vehicle frame. Always connect a ground wireStop engine and let cool Installing Exhaust PipeConnecting the Battery + −Overview And Engine Prestart Checks Daily pre-start checks Engine Left Side Engine Right SideStarting engine for the first time Run-in period first 100 hoursTools Needed Do not place Connecting to Weld Output TerminalsCorrect Installation Work Weld Output TerminalSelecting Weld Cable Sizes Do not use glow plugs longer than 20 seconds Engine Control SwitchesPlace switch in Run position to operate most MIG equipment − Operating the Welding GeneratorWeld Output Controls Work Clamp Electrode Holder Typical Stick Welding Connections And Control SettingsTypical Settings For 7018 1/8 Electrode Stop engineSet Weld Process Selector switch to Wire − position Dcen Typical MIG Welding Connections And SettingsSet Weld Process Selector switch to Wire + Dcep position Set Weld Process Selector switch to Wire + positionTools Needed 3/4 Work Not Used To Work Left Side View To verify Gfci is working properly Generator Power Receptacles− Operating Auxiliary Equipment At least once a month, run engine atSimultaneous Weld And Power − Operating Optional Battery Charger Battery Charge ControlsDetermining Battery Charging Current Battery Charge Cable Connections Minutes Battery Charging ProcedureStart Your Professional Welding Career Now Routine Maintenance − Maintenance and TroubleshootingStop engine and let cool Oil And Fuel Maintenance Label And Engine Maintenance Activities804 197-A / Ref 803 111-A / 227 Damage when determining whether Cleaner or with dirty element. EngineMent is not covered by the warranty Air cleaner primary element canChecking Fuel Solenoid Adjusting Engine SpeedAdjusting Fuel Solenoid Position Stop screw is factory-set and should not be adjustedCheck for non-binding Adjusting Throttle SolenoidChecking Throttle Solenoid 16 mmMaking Engine Speed Adjustments Adjusting Idle SpeedAdjusting Weld/Power Speed Supplementary Protector CB8 Overload ProtectionComponent Panel Stop engine Fuse F1Trouble Remedy Troubleshooting TablesGenerator Power WeldingEngine Maintenance Display ActionCurrent transformer CT1, and throttle solenoid TS1 − Parts ListRecommended Spare Parts Recommended Spare PartsCircuit Diagram For Welding Generator − Electrical Diagrams228 719-B OM-217 455 231 607-B Run-In And Wetstacking − RUN-IN and WetstackingIdle − Performance DataFuel Consumption Curves US Gal./HrAC Amperes At 120 Volts Generator Power CurveDuty Cycle VoltsStick Mode Volt-Ampere Curves DC Amps CC/AC Stick Mode AC VoltsAC Amps DC Amps MIG Mode Volt-Ampere Curve− Generator Power Guidelines Selecting EquipmentGrounding Generator To Truck Or Trailer Frame Amperes x Volts = Watts Grounding When Supplying Building SystemsHow Much Power Does Equipment Require? Use ground device as stated in electrical codesFarm/Home Equipment Rating Starting Watts Running Watts Approximate Power Requirements For Industrial MotorsApproximate Power Requirements For Farm/Home Equipment Industrial Motors Rating Starting Watts Running WattsContractor Rating Starting Watts Running Watts Approximate Power Requirements For Contractor EquipmentKVA/HP x HP x 1000 / Volts = Starting Amperage Power Required To Start MotorHow Much Power Can Generator Supply? Single-Phase Induction Motor Starting RequirementsTypical Connections To Supply Standby Power Selecting Extension Cord Use Shortest Cord Possible Stick Welding Procedure Weld current starts when electrode touches work- piece− Stick Welding Smaw Guidelines Electrode and Amperage Selection Chart Striking an Arc − Scratch Start TechniqueStriking an Arc − Tapping Technique 10-30 9090 End View of Work Angle Poor Weld Bead CharacteristicsGood Weld Bead Characteristics Positioning Electrode HolderElectrode Movement During Welding Conditions That Affect Weld Bead Shape16 in 30 1.6 mm Tack Welds Butt JointsLap Joint Tee JointPossible Causes Corrective Actions Troubleshooting − PorosityTroubleshooting − Excessive Spatter Weld TestTroubleshooting − Incomplete Fusion Troubleshooting − Lack Of PenetrationTroubleshooting − Excessive Penetration Troubleshooting − Burn-Through Troubleshooting − Waviness Of BeadTroubleshooting − Distortion Work like a Pro Service Your distributor also givesSupport Your distributor and/or equipment manufacturer’s To locate a Distributor or Service Agency visitMiller Electric Mfg. Co For assistance in filing or settling claims, contact