2 Inch Piston Kit Fits McCulloch 700 SP70 Chainsaw 85239

A 2 inch bore piston kit for the McCulloch 700 and SP70 chainsaws, replacing 85239. 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 MCCULLOCH 700 AND SP70 - The 2 inch bore saws. Check the model on the saw before ordering.
• REPLACES 85239 - If your parts list shows that 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.