Hobart Welding Products OM-477 manual Adjusting Engine Idle Speed, Adjusting Governor Sensitivity

Page 34

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

 

 

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

 

 

prevent linkage from binding. Do

 

 

 

 

 

 

not readjust idle speed screw when

 

Right Side

 

adjusting solenoid.

 

 

 

 

 

 

 

Tighten bracket screws. Release

 

 

 

throttle arm. Recheck idle speed

 

Tools Needed:

 

and readjust if necessary.

 

 

Y Stop engine.

 

 

 

 

 

 

Close door.

4

1/4 in

 

 

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

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Contents Processes OM-477Description From Hobart 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 Service SupportHobart Welding Products Contact your Distributor forCall

OM-477 specifications

Hobart Welding Products has long been recognized for delivering high-quality welding equipment tailored to the needs of both professionals and DIY enthusiasts. Among its distinguished offerings is the OM-477, a versatile multi-process welder designed to excel in a variety of welding applications. This machine integrates an array of features and technologies that cater to both novice and experienced welders.

One of the defining characteristics of the OM-477 is its multi-process capability, which allows users to perform MIG, TIG, and stick welding with ease. This flexibility makes it an ideal choice for a wide range of projects, from automotive repair to light fabrication tasks. The seamless transition between processes is facilitated by a user-friendly interface that simplifies the selection and adjustment of settings, ensuring a smoother workflow.

The OM-477 is powered by a robust, industrial-grade inverter technology that provides high arc stability and increased energy efficiency. This not only enhances performance but also reduces power consumption, making it an environmentally friendly option. Welders can operate at various output ranges, accommodating different materials, including mild steel, stainless steel, and aluminum, thus ensuring versatility in project execution.

Another notable feature of the OM-477 is its portability. Weighing in at a manageable size, this welder is equipped with a durable carry handle, allowing for easy movement between job sites or within the workshop. This characteristic complements its user-friendly setup, making it accessible for individuals of all skill levels.

Safety is a pivotal aspect of the design of the OM-477. It incorporates multiple safety features such as a thermal overload protection mechanism, ensuring that the machine operates well within safe parameters. This is crucial for preventing overheating, thereby extending the welder's lifespan and reducing maintenance costs over time.

Additionally, the OM-477 offers precise control over welding parameters, enabling users to fine-tune their settings for optimal results. Whether tackling thin sheet metal or thicker materials, the welder’s adjustment capabilities ensure a clean, professional finish.

In summary, the Hobart OM-477 stands as a testament to innovative welding technology, combining multi-process functionality, inverter efficiency, portability, and safety into a single machine. It is a reliable tool designed to empower welders at any skill level, making it a worthy addition to any welding arsenal. With the OM-477, Hobart Welding Products continues to champion quality and user satisfaction in the welding industry.
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