4. Symbols on the machine

For safe operation and maintenance, symbols are carved in relief on the machine.

According to these indications, please be careful not to make any mistake.

(a)The port to refuel “MIX GASOLINE” Position: Fuel cap

(b)The port to top up chain oil Position: Oil cap

(c)Setting the switch to the “ ” position, the engine starts.

Setting the switch to the “O” position, the engine stops immediately.

Position: Rear-left of the unit

(d)Starting the engine. If you pull out the choke knob (at the back-right of the rear handle) to the point of the arrow, you can set the starting mode as follows:

•First-stage position – starting mode when the engine is warm.

•Second-stage position – starting mode when the engine is cold.

Position: Upper-right of the aircleaner cover

(e)The screw under the “H” stamp is The High-speed adjustment screw.

The screw under the “L” stamp is The Slow-speed adjustment screw.

The screw at the left of the “T” stamp is the Idle adjustment screw.

Position: Left side of the rear handle

(f)Shows the directions that the chain brake is released (white arrow) and activated (black arrow).

Position: Front of the chain cover

■EMISSION CONTROL

An emission control label is located on the engine.

IMPORTANT ENGINE INFORMATION

THIS ENGINE CONFORMS TO U.S. EPA PH1

FOR SMALL OFF-ROAD ENGINES.

COMPLIANCE PERIOD : CATEGORY A

ENGINE FAMILY : 7KZXS.0625BD ; EM*1

ENGINE DISPLACEMENT : 62cc

REFER TO OWNER'S MANUAL FOR MAINTE- NANCE, SPECIFICATIONS AND ADJUSTMENTS.

MANUFACTURED:

USE JASO FC OR ISO EGC GRADE 50:1 OIL.

*1: The initial number will be changed every year of manufacturing.

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Zenoah G621AVS manual Symbols on the machine, Emission Control
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G621AVS specifications

The Zenoah G621AVS is a powerful and reliable two-stroke engine designed for a wide range of applications, particularly in the realm of remote-controlled (RC) models and outdoor power equipment. Recognized for its blend of performance, efficiency, and durability, the G621AVS is a popular choice among hobbyists and professionals alike.

One of the standout features of the G621AVS is its displacement of 62cc, which provides a significant power output, making it suitable for various applications including RC helicopters, airplanes, and large-scale gardening equipment. This engine is engineered with a parallel twin-cylinder configuration, allowing for improved torque and smoother operation, which enhances overall performance and responsiveness.

The G621AVS utilizes advanced anti-vibration systems to reduce operational vibrations. This technology ensures user comfort and improves the longevity of the engine components by minimizing wear and tear caused by excessive vibrations. Consequently, operators can enjoy extended periods of use without fatigue, whether they are flying an RC aircraft or operating gardening tools.

Zenoah has also implemented a sophisticated carburetor system in the G621AVS, optimizing fuel efficiency while ensuring high performance. The engine is designed to deliver a stable fuel-air mixture, allowing for consistent power output and reliable starts. This results in lower fuel consumption, which is not only cost-effective but also environmentally friendly, reducing emissions without sacrificing performance.

Another characteristic of the G621AVS is its robust construction. Built with high-quality materials, the engine is designed to withstand harsh operating conditions. The durable design prolongs the lifespan of the engine, giving users confidence in their investment while ensuring dependable operation in various environments.

Easy maintenance is another key feature of the G621AVS. The engine is designed for straightforward access to components, making regular maintenance tasks less time-consuming and more accessible for users. Zenoah provides comprehensive support and resources, ensuring users can efficiently maintain high performance over the life of the engine.

In conclusion, the Zenoah G621AVS stands out in the competitive landscape of two-stroke engines, thanks to its powerful output, advanced technologies, and user-friendly features. Whether used in RC hobbies or professional applications, this engine promises reliability and efficiency, making it a top choice for those seeking performance and durability.
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