Subaru Robin EH12-2 Parts Manual

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Year 2000

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Subaru Robin EH12-2 Engine Specification

The Subaru Robin EH12-2 Engine is a robust and efficient air-cooled, single-cylinder, four-stroke gasoline engine designed for a variety of applications, including small machinery and equipment. It features a displacement of 121cc, providing a balance of power and compactness suitable for tasks that require reliable performance. The engine's overhead valve (OHV) design enhances fuel efficiency and minimizes emissions, aligning with environmental standards.

With a maximum output of approximately 3.5 horsepower at 4000 RPM, the EH12-2 delivers consistent power for demanding tasks. Its bore and stroke measure 60mm by 42mm, contributing to its efficient combustion and performance characteristics. The engine is equipped with a recoil start system, ensuring ease of operation without the need for complex electrical components. A splash lubrication system is employed to maintain optimal lubrication of internal components, reducing wear and extending engine life.

The Subaru Robin EH12-2 incorporates a float-type carburetor, which ensures precise fuel delivery for smooth operation. Its compact design, with dimensions of approximately 12.9 inches in length, 14.3 inches in width, and 13.2 inches in height, allows for flexible installation in various equipment. The dry weight of the engine is around 27 pounds, making it relatively lightweight and easy to handle.

Overall, the EH12-2 is engineered for durability and ease of maintenance, featuring a robust construction that withstands rigorous use. It is an ideal choice for applications where reliability and efficiency are paramount. The engine's reputation for quality and performance makes it a preferred option for both OEMs and end-users seeking a dependable power solution.

Subaru Robin EH12-2 Engine F.A.Q.

What is the recommended oil type for the Subaru Robin EH12-2 engine?

The recommended oil for the Subaru Robin EH12-2 engine is SAE 10W-30, which works well in most temperature conditions.

How often should I change the oil in my Subaru Robin EH12-2 engine?

It is advisable to change the oil every 50 hours of operation or at least once a season to ensure optimal engine performance.

What is the correct spark plug gap for the Subaru Robin EH12-2 engine?

The correct spark plug gap for the Subaru Robin EH12-2 engine is 0.7-0.8 mm (0.028-0.031 inches).

How can I troubleshoot a Subaru Robin EH12-2 engine that won't start?

Check the fuel level and quality, ensure the spark plug is clean and properly gapped, inspect the air filter, and verify that the ignition switch is in the "on" position.

What maintenance steps should be taken to ensure long life for my Subaru Robin EH12-2 engine?

Regularly check and change the oil, clean or replace the air filter, inspect and replace the spark plug as necessary, and check fuel lines for wear or damage.

How do I clean the air filter on a Subaru Robin EH12-2 engine?

Remove the air filter cover, take out the filter element, and clean it with warm soapy water. Rinse thoroughly and let it dry completely before reinstallation.

What should I do if the Subaru Robin EH12-2 engine overheats?

Stop the engine immediately, check for obstructions in the cooling fins, ensure the oil level is correct, and verify that the air intake is unobstructed.

How can I improve fuel efficiency in my Subaru Robin EH12-2 engine?

Maintain proper tire pressure if applicable, keep the air filter clean, use the correct type and grade of oil, and operate the engine at optimal speed settings.

What are common causes of reduced power output in a Subaru Robin EH12-2 engine?

Common causes include a dirty air filter, clogged fuel lines, incorrect spark plug gap, or worn piston rings. Regular maintenance can help identify and fix these issues.

How do I store a Subaru Robin EH12-2 engine for extended periods?

Drain the fuel tank and carburetor, change the engine oil, remove the spark plug and add a few drops of oil into the cylinder, and cover the engine to protect it from dust and moisture.