Mtanlo 3/8-6T Spur Sprocket Drum Assembly Kit for Echo CS-370 CS-400 CS-4200ES Chainsaws

Reliable Spur Sprocket Drum Assembly Kit for Echo Chainsaws

The Mtanlo spur sprocket drum assembly kit is designed to provide a dependable replacement for worn clutch drums and spur gears on select Echo models. With a 3/8 inch pitch and a 6-tooth spur gear, this kit is crafted to fit into the existing clutch system and help keep the chain moving smoothly during routine cuts. Rather than a simple replacement, this kit aims to restore the feel of precise engagement you expect when you pick up a chainsaw for a job, whether it’s quick pruning or mid-size lumber work.

Built for compatibility with popular Echo models, this kit is a practical option for DIY mechanics and professional shops alike. The parts align with the same form factor as original components, which supports straightforward installation and familiar handling during maintenance tasks. When you’re back in the field, you’ll notice a more predictable clutch response and steady drive performance, contributing to a more confident workflow.

What’s included and how to verify fit

• Replacement part numbers: A056000181, A556000401, A556000400
• Compatible models: Echo CS-370, CS-400, CS-400F, CS-370F, CS-4200ES, CS-420ES

Key benefits and usage scenarios

• Supports reliable clutch engagement, helping maintain steady torque transfer during typical cutting tasks
• Offers a cost-efficient alternative for wear replacement, reducing downtime on job sites
• Easy to identify and install, with a design that mirrors common Echo spare parts for compatible models

Notes: Please compare your current parts with the original to confirm fit before ordering. If you encounter a compatibility issue or other concern, Mtanlo provides a 90-day satisfaction policy with return, refund, or free exchange options. Our team is ready to assist with setup tips or installation questions to help you get back to work quickly.

In practical use, you may appreciate how this kit helps preserve smooth operation across routine maintenance cycles. The combination of a 3/8-6T spur gear and clutch drum assembly is designed to align with the mechanical rhythm of Echo saws in the CS-370, CS-400, (including their F variations), and CS-4200ES/CS-420ES lines. While outcomes can vary with task complexity and maintenance history, the kit is intended to support consistent engagement and durable performance under typical mid-range cutting loads.