Hyceker Chainsaw Clutch Drum & 3/8"LP 6T Spur Sprocket Kit for Echo CS-370/CS-400 — Bearing + Removal Tool, Direct-Fit

Hyceker's replacement clutch drum and 3/8"LP-6T spur sprocket kit is a direct-fit repair solution for Echo CS-370, CS-400 and CS-4010 (and compatible Shindaiwa 402S) chainsaws, supplied with a needle bearing and removal tool for straightforward installation.

If your Echo CS-370 or CS-400 clutch drum, sprocket or bearing is worn, this Hyceker kit supplies the common replacement components needed to restore drive engagement and chain motion. Designed specifically for models that use 3/8" low-profile chain, the set bundles the spur sprocket (6-tooth), clutch assembly, needle bearing and two-purpose piston stop/removal tool so you have matching parts and a basic tool to get the job done without sourcing multiple items.

Will this clutch drum and sprocket fit my saw model?

This kit is built to match Echo CS-370, CS-370F, CS-400, CS-400F, CS-4010 and Shindaiwa 402S that use 3/8" low-profile chain. It does NOT fit Echo CS-370ES or CS-400ES models—verify your serial/model before ordering.

• Pitch: 3/8" LP (low profile) — only for 3/8" low-profile chains
• Teeth: 6T spur sprocket sized to original specifications
• Compatible part numbers listed for cross-reference

How does the included removal and piston-stop tool help?

The metal 2-in-1 tool combines a piston stop and a clutch removal aid so you can lock the piston and remove the clutch nut safely. It reduces the need to borrow specialty tools and speeds disassembly and reassembly during maintenance.

• 2-in-1 functionality: 10mm and 14mm thread engagement for varied use
• Made of hardened metal to withstand repeated use
• Saves time by preventing piston rotation while loosening the clutch

What parts are included and what should I expect in quality?

The kit contains a 3/8-6T spur sprocket, a clutch assembly (7mm thread), a needle bearing, a clutch removal tool and the piston stop tool. Hyceker supplies aftermarket parts manufactured to match OEM fit and function; inspect components on arrival and replace if any defect is evident.

• Complete kit reduces compatibility errors during ordering
• Needle bearing included to restore smooth drum rotation
• Cross-reference part numbers A056000181, A556000400, A556000401 for confirmation

Can I install this kit myself and what should I watch for?

If you have basic mechanical experience and the correct socket set, this kit is suitable for DIY installation. Always follow safe practices: disconnect spark plug, use the piston stop, torque fasteners to spec, and confirm chain tension and brake function after assembly.

• Disconnect spark plug before starting work for safety
• Use the included piston-stop to prevent piston movement while loosening
• Verify chain pitch and saw model to avoid purchasing the wrong part

Who this is for: This Hyceker replacement clutch drum and spur sprocket kit is intended for owners, mechanics and small engine repair shops working on Echo CS-370/CS-400 series and compatible Shindaiwa 402S chainsaws that require a 3/8" low-profile spur sprocket. Choose this kit if you want an all-in-one parts package with a removal tool and bearing to streamline a clutch/sprocket service—avoid it if you own ES (electric start) variants or a different chain pitch.