Carburetor Adjustment

Idle adjusting screw

Low speed needle (L)	High speed needle (H)

Every unit is run at the factory and the carburetor is set in compliance with Emission Regulations. In addition, the carburetor is equipped with “H” (High Speed) and “L” (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.Stop engine.

Turn “H” speed needle counterclockwise (CCW) to stop.

Turn “L” speed needle midway between full clockwise (CW) stop and CCW stop.

5.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.

6.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.

If engine hesitates turn “L” needle CCW 1/8 turn and repeat acceleration.

Continue adjustment until smooth acceleration results.

7.Check idle speed and reset if necessary as described in item 5. If a tachometer is available idle speed should be set to 2700 r/min.

CAUTION

When starting, idling adjustment speed should be adjusted not to rotate the saw chain. Correct idle speed is adjusted 2700 r/min. Or 1/4 turn CCW from the point the chain stops moving.

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

CS-450P

CS-450P specifications

The Echo CS-450P is a powerful chainsaw designed for demanding tasks in various environments, ideal for both professional landscapers and avid DIY enthusiasts. Known for its durability and performance, this model showcases several outstanding features and technologies that set it apart from other chainsaws in its class.

At the core of the CS-450P is its robust 45.0 cc professional-grade, 2-stroke engine. This engine is engineered to deliver high power output while maintaining excellent fuel efficiency, making it suitable for extensive cutting tasks without the need for frequent refueling. The chainsaw is equipped with a decompression valve that simplifies starting, reducing the necessary pulling force, especially after prolonged storage or in cold conditions.

One of the standout features of the CS-450P is its Power Boost Vortex technology. This innovation enhances air intake, resulting in a more efficient combustion process. As a result, users experience a significant boost in performance, contributing to faster cutting speeds and improved overall efficiency. This system ensures that the chainsaw operates smoothly, even under heavy loading conditions.

The Echo CS-450P is designed for precise and controlled operation. It features a 20-inch bar and chain, providing an effective balance between reach and maneuverability. The sharp, low-vibration chain ensures smooth cutting action, reducing wear and enhancing safety during use. Additionally, the ergonomic handle design minimizes fatigue, allowing users to operate for extended periods with comfort.

Another significant aspect of the CS-450P is its anti-vibration technology. This feature helps absorb shock during operation, which not only enhances comfort but also promotes better control over the saw, especially during prolonged use. This is particularly beneficial for professional users who may be operating the chainsaw for hours at a time.

For user convenience, the CS-450P includes a convenient tool-less air filter cover, making maintenance easier and quicker. This accessibility encourages regular cleaning and upkeep, which ultimately prolongs the life of the chainsaw. It also features an automatic oiling system, ensuring that the chain remains lubricated during operation, thereby enhancing cutting efficiency and reducing wear on the bar and chain.

Overall, the Echo CS-450P is a well-equipped chainsaw, featuring advanced technology and thoughtful design elements that cater to the needs of users in various cutting scenarios. Its combination of power, efficiency, and user-friendly features makes it an excellent choice for those seeking reliable performance in a professional-grade chainsaw.