Subaru EH72 LP Parts Manual

Pages 30

Year 2010

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Subaru EH72 LP Engine Specification

The Subaru EH72 LP engine is a robust air-cooled, V-twin, four-stroke engine designed for high efficiency and performance in demanding applications. It features a displacement of 720cc, providing substantial power output suitable for a variety of industrial and commercial uses. The engine is engineered with a bore and stroke of 80mm and 72mm respectively, delivering a balanced combination of torque and horsepower. Operating on liquid propane as a fuel source, the EH72 LP promotes cleaner combustion and reduced emissions, aligning with environmentally conscious standards.

The engine is equipped with an overhead valve (OHV) configuration, optimizing fuel efficiency and facilitating easier maintenance. It incorporates a forced air cooling system to maintain optimal operating temperatures, enhancing the engine's durability and reliability under continuous use. The lubrication system is designed with a full-pressure system featuring a spin-on oil filter, ensuring consistent oil distribution and extended engine life.

For ignition, the Subaru EH72 LP utilizes a reliable electronic system, ensuring quick starts and stable performance across various conditions. The engine is also designed with a dual-element air cleaner, providing superior protection against dust and debris, thus extending service intervals and reducing maintenance needs. Engine mounting is simplified through a standard horizontal shaft orientation, making it adaptable for integration into a wide range of equipment. Overall, the Subaru EH72 LP engine is engineered to deliver high performance, reliability, and efficiency suited for applications requiring consistent power and lower emissions.

Subaru EH72 LP Engine F.A.Q.

What are the recommended maintenance intervals for the Subaru EH72 LP Engine?

The recommended maintenance intervals for the Subaru EH72 LP Engine are as follows: oil change every 100 hours, air filter inspection every 50 hours, and spark plug replacement every 300 hours. Regular checks of fuel lines and connections are also advised.

How can I troubleshoot starting issues with the Subaru EH72 LP Engine?

If the engine won't start, check the fuel supply, ensure the spark plug is functioning, and verify that the air filter is clean. Additionally, inspect the ignition system and connections. If problems persist, consult the engine's service manual.

What type of oil is recommended for the Subaru EH72 LP Engine?

For optimal performance, use SAE 10W-30 oil for the Subaru EH72 LP Engine. In colder climates, SAE 5W-30 may be used. Always refer to the owner's manual for specific oil recommendations.

How can I improve the fuel efficiency of my Subaru EH72 LP Engine?

To improve fuel efficiency, ensure regular maintenance such as timely oil changes and clean air filters. Additionally, operate the engine at optimal loads and avoid unnecessary idling.

What should I do if the Subaru EH72 LP Engine overheats?

If the engine overheats, stop operation immediately and allow the engine to cool down. Check for obstructions in the cooling fins, ensure adequate ventilation, and verify that the oil level is correct. Inspect the cooling system for leaks or blockages.

How do I adjust the carburetor on the Subaru EH72 LP Engine?

To adjust the carburetor, first locate the adjustment screws. Turn the idle mixture screw slowly to achieve a smooth idle, then adjust the throttle screw to set the idle speed. Consult the service manual for detailed instructions and settings.

What are the common causes of power loss in the Subaru EH72 LP Engine?

Common causes of power loss include clogged air filters, dirty fuel systems, worn spark plugs, and incorrect carburetor settings. Regular maintenance and inspections can help prevent these issues.

How often should the spark plugs be replaced on the Subaru EH72 LP Engine?

Spark plugs should be inspected every 100 hours and replaced every 300 hours of operation to ensure optimal engine performance.

How do I winterize the Subaru EH72 LP Engine?

To winterize the engine, drain the fuel system, change the oil, and remove the spark plugs to apply a small amount of oil into the cylinders. Reinstall the spark plugs and cover the engine to protect it from moisture.

What should I check if the Subaru EH72 LP Engine is emitting excessive smoke?

Excessive smoke may indicate an oil level issue, a clogged air filter, or a malfunctioning carburetor. Inspect and clean or replace the air filter, check the oil level, and adjust the carburetor as needed.