9-6. Servicing Fuel And Lubrication Systems

7

3

4

5

6

1

2

YStop engine and let cool.

YAfter servicing, start engine and check for fuel leaks. Stop engine, tighten connec- tions as necessary, and wipe up spilled fuel.

1Oil Filter

2Oil Drain Valve And Hose

3Oil Fill Cap

4Fuel Line

5Primary Fuel Filter (Fuel/ Water Separator)

6Petcock

7Secondary Fuel Filter

8Fuel Tank Sludge Drain Valve

To change oil and filter:

Route oil drain hose and valve through hole in base. See engine manual and engine maintenance label for oil/filter change in- formation.

To drain water from fuel system:

Open primary fuel filter petcock and drain water into metal container. Close petcock when water-free fuel flows.

To replace primary fuel filter:

Turn filter counterclockwise. Re- move filter.

Fill new filter with fresh fuel. Apply thin coat of fuel to gasket on new fil- ter. Install new filter and turn clock- wise. Bleed air from fuel system ac- cording to engine manual.

Inspect fuel lines, and replace if cracked or worn.

To replace secondary fuel filter:

See engine manual.

To drain sludge from fuel tank:

YBeware of fire. Do not smoke and keep sparks and flames away from drained fuel. Dis- pose of drained fuel in an en- vironmentally-safe manner. Do not leave unit unattended while draining fuel tank.

YProperly lift unit and secure in a level position. Use ade- quate blocks or stands to support unit while draining fuel tank.

Attach 1/2 ID hose to drain valve. Put metal container under drain, and use screwdriver to open sludge drain valve. Close valve when sludge has drained. Remove hose.

Close door.

8

Tools Needed:

802 170-D / Ref. 802 168-B / Ref. 801 434

OM-491 Page 40

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Miller Electric Big Blue 502P, Big Blue 402P, Big Blue 602P manual Servicing Fuel And Lubrication Systems
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Big Blue 602P, Big Blue 502P, Big Blue 402P specifications

Miller Electric is a well-respected name in the welding industry, known for its high-quality portable welders that cater to a wide range of applications. Among their iconic products are the Big Blue 502P, Big Blue 402P, and Big Blue 602P, each offering unique features and capabilities suited to professional welders.

The Miller Big Blue 502P is recognized for its robust construction and high-performance capabilities. Powered by a reliable diesel engine, it provides 500 amps of welding power at a duty cycle of 100%. This model is particularly favored for its versatility, accommodating both stick and TIG welding processes. One of its key technologies is the Auto-Set feature, which automatically adjusts settings for optimal performance based on the material thickness. This welder also boasts a user-friendly interface, complete with easy-to-read digital displays for monitoring essential parameters.

In contrast, the Big Blue 402P offers a slightly lower welding output while maintaining many of the advanced features seen in its larger counterpart. With a maximum output of 400 amps, it is perfectly suited for light to medium-duty applications. The 402P is particularly lightweight for a diesel welder, making it an ideal choice for contractors who need mobility without sacrificing power. It includes the X-Mode technology, which ensures reliable performance in challenging conditions and offers an intuitive control panel for ease of use.

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All three models benefit from Miller's commitment to innovation and user-centric design features. Built to thrive in tough work environments, the Big Blue series is equipped with protective casings and vibration-resistant components. Safety is also a priority, with several built-in features that help protect users during operation.

In summary, the Miller Electric Big Blue 502P, 402P, and 602P each bring unique strengths to the welding market. Their notable features include advanced technologies, robust construction, and versatile applications, ensuring that professionals have the right tool for any welding job. Whether for light-duty tasks or heavy industrial applications, Miller Electric's Big Blue series remains a cornerstone for welders around the globe.
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