7-8. Adjusting Engine Weld/Power Speed

1850 rpm

(max)

.Governor sensitivity may re- quire adjustment if engine speed is adjusted (see Section 7-10).

If linkage binds, loosen socket nuts and turn sockets until link- age works smoothly. Tighten nuts.

After tuning engine, check engine no load speed with a tachometer (see table for no load speeds). If necessary, adjust speed as follows:

7

1/16 in

8 (1.6 mm)

6

11 10

9

1Socket Nut

2Governor Linkage Rod

3Lock Nut

4Socket

5Governor Arm

Rod length should be 3-1/4 in (83

mm)between lock nuts. To adjust, remove socket from arm and loos- en lock nut. Turn socket to adjust length. Tighten nut and reattach socket to arm.

6Carburetor

7Throttle Stop Plate

8Throttle Stop

Clearance between plate and stop should be 1/16 in (1.6 mm). To ad- just clearance, proceed as follows:

9Linkage Pivot Arm

10Linkage Socket

11Lock Nut

1

3-1/4 in

4

Remove socket at arm and loosen lock nut. Turn socket to adjust clearance. Reattach socket and

(83 mm)

3

2

5

13

12

Tools Needed:

3/8, 7/16 in

tighten nut.

Start engine and run until warm. Turn Engine Control switch to Run position.

12Governor Speed Screw

13Lock Nut

Loosen nut. Turn screw until engine runs at weld/power speed.

YStop engine.

Close door.

Ref. ST-801 179 / Ref. ST-800 159-C / Ref. ST-800 161

OM-477 Page 29

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Hobart Welding Products OM-477 manual Adjusting Engine Weld/Power Speed, rpm Max
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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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