43mm Piston Kit Fits Echo CS-4400 Chainsaw 10000038930

A 43mm piston kit for the Echo CS-4400 chainsaw, replacing 10000038930 and 10000038932. A scored piston is usually a lean condition, so pressure and vacuum test the crankcase and fix any air leak or fuel fault before the new piston goes in. Measure ring end gap in the bore, use a ring compressor and fit the circlips fully.

• PISTON KIT - Piston, rings, wrist pin and circlips.
• FITS ECHO CS-4400 - The 43mm saw. Check the model on the saw before ordering.
• REPLACES 10000038930 AND 10000038932 - If your parts list shows either number for the piston, this kit covers it.
• CHECK RING END GAP IN THIS CYLINDER - Square the ring in the bore, measure the gap with a feeler, and check side clearance in the groove. Use a ring compressor and fit the circlips with the open end away from the notch.
• FIND THE CAUSE FIRST - A scored piston is usually a lean condition: an air leak at the intake or crank seals, or a fuel fault. Pressure and vacuum test the crankcase before the new piston goes in.