Echo 89750516133 Clutch Tool - Heavy Duty Clutch Repair Kit for Lawn Mowers & Outdoor Power Equipment | Perfect for DIY Maintenance & Small Engine Repairs

Fits the clutch on my Echo CS440 just fine even though the description says 'fits CS400'. A quick review of the parts manual for both saws revealed they used the same clutch so I thought I'd take a chance. It is not a perfect fit in that the 'teeth' are not putting pressure on the strongest part of the clutch but I was able to apply the specified torque of 30 Nm without breaking anything. Be advised the clutch has left hand threads and not all torque wrenches are capable of applying torque in the counter-clockwise direction. My Craftsman wrench is, but the Tekton wrench I bought here at Amazon, is not.