Idle adjusting screw

CARBURETOR ADJUSTMENT

Every unit is run at the factory and the carburetor is set in compliance with Emission Regulations. In addition, the carburetor is equipped with high speed and low speed needle adjustment limiters that prevent settings outside acceptable limits.

1.Before adjusting carburetor clean or replace air filter and muffler “Spark Arrestor Screen”.

2.Make sure the bar and chain are properly adjusted.

3.Start engine and run several minutes to bring to operating temperature. Flash choke twice during warm-up to clear any air from the fuel system.

4.Idle Speed Adjustment:

•Start engine, turn “Idle” speed adjustment screw CW until the saw chain begins to turn, then turn screw out CCW until the saw chain stops turning.

Turn screw out, CCW, an additional 1/4 turn.

WARNING

Cutting attachment must not move when unit is idling.

5.Accelerate to full throttle for 2 - 3 seconds to clear any excess fuel in the engine, then return to idle.

Accelerate engine to full throttle to check for smooth transition from idle to high speed.

6.Check idle speed and reset if necessary as described in item 4. If a tachometer is available idle speed should be set to 2800 r/min.

High Altitude Operation

This engine has been factory adjusted to maintain satisfactory starting, emission, and durability performance up to 1100 feet above sea level (ASL) (96.0 kPa). To maintain proper engine operation and emission compliance above 1100 feet ASL the carburetor may need to be adjusted by an authorized ECHO service dealer.

CAUTION

When starting, idling adjustment speed should be adjusted not to rotate the saw chain. Correct idle speed is adjusted 2800 r/min. Or 1/4 turn CCW from the point the chain stops moving.

When you experience trouble with the carburetor, contact your dealer.

IMPORTANT

If the engine is adjusted for operation above 1100 feet ASL, the carburetor must be readjusted when operating the engine below 1100 feet ASL, otherwise severe engine damage may result.

CS-500P

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Echo CS-500P instruction manual Carburetor Adjustment, Cutting attachment must not move when unit is idling
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CS-500P specifications

The Echo CS-500P is a robust chainsaw designed for both professional landscapers and avid homeowners. Combining power, efficiency, and advanced technology, this chainsaw is ideal for cutting tasks ranging from light pruning to heavy-duty tree felling.

At the heart of the Echo CS-500P is a 50.2 cc professional-grade two-stroke engine that allows the chainsaw to deliver exceptional power. This engine technology not only ensures high performance but also optimizes fuel efficiency, enabling longer run times between refuels. The engine is designed to reduce emissions, complying with stringent environmental standards, making it an eco-friendlier option in its class.

The CS-500P features a high-quality 20-inch bar and chain, which provides excellent cutting capacity. The chain is designed for high performance, delivering smooth cuts while minimizing kickback—a vital feature that enhances operator safety. Additionally, it comes equipped with a centrifugal air cleaning system that removes larger dust and debris particles before they reach the air filter. This system significantly extends the life of the air filter and reduces maintenance needs, ensuring the chainsaw operates at peak performance for longer periods.

Another key feature of the Echo CS-500P is its ergonomic design. The chainsaw includes a lightweight design that balances power and portability, allowing for easy handling during extended use. The anti-vibration technology incorporated into the handle effectively reduces user fatigue, making it suitable for extensive cutting tasks.

Further enhancing the user experience is the easy-to-use starting system. The CS-500P features a mechanical ignition system that allows for quick startups, even in cold conditions. The side-access chain tensioner simplifies chain adjustment, ensuring that the chain remains properly tightened without the need for additional tools.

Built for durability, the Echo CS-500P is constructed with high-quality materials, ensuring it can withstand the rigors of professional use. With its combination of power, efficiency, and innovative design, the Echo CS-500P chainsaw is an excellent choice for anyone in need of a reliable cutting tool, whether for occasional yard work or intensive forestry tasks. The Echo name is synonymous with quality, making this chainsaw a trusted companion for those who demand performance and dependability.
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