Miller Electric Big 40G manual Adjusting Engine Idle Speed, Adjusting Governor Sensitivity

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7-9. Adjusting Engine Idle Speed
			Start engine. Place Engine Control
			Switch in Run/Idle position.
			1	Solenoid Bracket Screws
2	5		2	Throttle Arm
		1250 rpm	3	Idle Speed Screw
		1250 rpm	4	Throttle Stop
			4	Throttle Stop
			Loosen bracket screws and move
			arm so screw touches stop. Do not
			release arm. Turn idle speed screw
			to obtain 550 rpm.
			5	Idle Mixture Screw
			Turn mixture screw counterclock-
			wise until engine falters, then turn
			screw clockwise until engine runs
			smoothly.
	1		Turn idle speed screw to obtain
			1250 rpm.
			6	Solenoid
			7	Plunger
	6		Slide solenoid inside bracket so
			plunger bottoms in solenoid. If nec-
3	7		essary, shim solenoid/bracket to
3			prevent linkage from binding. Do
			prevent linkage from binding. Do
			not readjust idle speed screw when
	Right Side		adjusting solenoid.
	Right Side
			Tighten bracket screws. Release
			throttle arm. Recheck idle speed
	Tools Needed:		and readjust if necessary.
	Tools Needed:		Y Stop engine.
			Y Stop engine.
			Close door.
4	1/4 in			Ref. ST-115 155-A
				Ref. ST-115 155-A

7-10. Adjusting Governor Sensitivity

3

2

1

Tools Needed:

1/2 in

.Governor sensitivity may re- quire readjustment if weld speed is adjusted. Weld speed must be readjusted if sensitivity is adjusted.

Be sure carburetor and link- ages are adjusted properly be- fore adjusting sensitivity.

Start engine. Apply and remove load.

1Locking Nuts

2Sensitivity Adjustment Screw

3Governor Spring

If engine is slow to pick up load or rpm drops under load, adjust spring tension as follows:

Loosen top nut and tighten bottom nut to move screw down. Tighten nuts.

If engine hunts with or without load, adjust spring tension as follows:

Loosen bottom nut and tighten top nut to move screw up. Tighten nuts.

YStop engine.

Close door.

Ref. ST-115 155-A / Ref. ST-159 728-A

OM-477 Page 30

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Contents Processes OM-477Description From Miller to You Table of Contents Page Electric Shock can kill Symbol UsageArc Welding Hazards ARC Rays can burn eyes and skinEngine Hazards Engine Exhaust Gases can kill Battery Explosion can BlindMoving Parts can cause injury Engine Heat can cause fireRadiation can cause interference Principal Safety StandardsEMF Information ARC Welding can cause interferenceUN Choc É Lectrique peut tuer Signification des symbolesConsignes DE SÉ Curité Lire Avant Utilisation LES Fumé ES ET LES GAZ peuvent ê tre dangereuxDES PIÈ CES Chaudes peuvent provoquer des brû lures graves LE Soudage peut provoquer un in- cendie ou une explosionDES Particules Volantes peuvent blesser les yeux LE Bruit peut affecter l’ouïeLA Chaleur DU Moteur peut pro- voquer un incendie DES Organes Mobiles peuvent provoquer des blessures’EXPLOSION DE LA Batterie peut LA Chute DE L’APPAREIL peut blesserLE Soudage À L’ARC risque de provoquer des interfé rences Principales normes de sé curitéInformation sur les champs é lectromagné tiques Consignes relatives aux stimulateurs cardiaquesWeld, Power, And Engine Specifications SpecificationsSymbols And Definitions DefinitionsWeight Dimensions, Weights, And Operating AnglesDimensions Fuel ConsumptionDuty Cycle And Overheating AC Auxiliary PowerMinutes Welding Minutes Resting 5 KVA/KW Single-Phase Auxiliary Power Plant No Weld Load Optional AC Power Plant Curves12.5 KVA/KW Three-Phase Auxiliary Power Plant No Weld Load AC Amperes CV/DC Models with Optional CV-3 Module Volt-Ampere CurvesDC Volts CC/DC Standard 100Connecting The Battery InstallationInstalling Welding Generator Installing Muffler13 mm Full Gasoline Capacity 9 qt 8.5 L Engine Prestart ChecksTop View 100 ft 30 m Or Less Connecting To Weld Output TerminalsSelecting Weld Cable Sizes 10 100% Duty CycleSocket Information Remote 14 Receptacle RC3 Information Optional, See SectionTerminal Strip 3T Connections Optional Stop engineOperating Welding Generator Front Panel Controls See SectionDescription Of Front Panel Controls See Section Ampere Range SwitchDo not switch under load Stop engine and fix trouble if either warning light goes onRemote Control Optional Example Combination remote amperage controlOperating Auxiliary Equipment Volt Duplex And Optional Gfci ReceptaclesVolt Duplex Receptacle Optional X 10 a + 120 V x 5 a = 3.0 kVA/kWConnecting Optional Auxiliary Power Plant FrontMaintenance and Troubleshooting Maintenance Label Do not clean housing with air hose Servicing Air CleanerTo Clean air filter Overload ProtectionCation makes it difficult to change Changing Engine Oil And FilterStop engine and let cool Standard Oil Filter Standard filterChanging Fuel Filter Inspecting And Cleaning Optional Spark Arrestor MufflerStop engine and let cool Adjusting Engine Weld/Power Speed 1850 rpm MaxAdjusting Engine Idle Speed Adjusting Governor SensitivityWelding Adjusting Optional High Altitude CarburetorTroubleshooting Trouble RemedyAuxiliary Power Engine Coolant temperature gets too high see SectionCheck Engine Control switch, and replace if necessary See engine manualOM-477 Electrical Diagrams Circuit Diagram For Welding Generator For Standard ModelsOM-477 193 967-A Selecting Equipment Auxiliary Power GuidelinesGrounding Generator To Truck Or Trailer Frame Earth ground if supplying Grounding When Supplying Building SystemsHow Much Power Does Equipment Require? Amperes x Volts = WattsIndustrial Motors Rating Starting Watts Running Watts Approximate Power Requirements For Industrial MotorsApproximate Power Requirements For Farm/Home Equipment Farm/Home Equipment Rating Starting Watts Running WattsApproximate Power Requirements For Contractor Equipment Contractor Rating Starting Watts Running WattsSingle-Phase Induction Motor Starting Requirements Power Required To Start MotorHow Much Power Can Generator Supply? KVA/HP x HP xTypical Connections To Supply Standby Power 240 120 GroundSelecting Extension Cord Use Shortest Cord Possible Current Load Watts AmperesOM-477 Parts List 114 113 112 111 110 109 108 107 106 105 104 103 102 101 100Includes 39 43 Dia Part Description Mkgs Quantity 025 Generator 2523Generator -1 Item 2539 IncludesCB1,2 139 Control Box w/Components -3 Item Your distributor also gives ServiceSupport Owner’s Record Miller Electric Mfg. Co