77mm Standard Ring Set Fits Kohler CH18 CH20 CH22

One 77.00mm standard ring set with a 1.5mm top compression ring, a second ring and a three-piece oil ring, for one cylinder of the Kohler 77mm, 624cc twin-cylinder engines. Pistons and gaskets are not included. It fits the CH18, CH20, CH22, CH620, CH621, CH640 and CH641 and the CV18, CV20, CV22, CV620, CV624 and CV640; some CH22, CH620 and CH640 engines are the 80mm, 674cc version, so check the displacement on the nameplate. It replaces ring set 24-108-22-S and is for a cylinder that has not been bored oversize. Rings will not seal a scored, glazed or out-of-round bore, so measure taper and out of round, hone lightly for a crosshatch, and check the end gap of each ring in its bore.

• ONE RING SET - One 77.00mm standard ring set with a 1.5mm top compression ring, a second ring and a three-piece oil ring, for one cylinder; a twin needs two. Pistons and gaskets are not included.
• 1.5MM TOP RING - The 77mm engines use a 1.5mm top ring, so there is no ring style to check on this family.
• FITS KOHLER 77MM, 624CC TWINS - CH18, CH20, CH22, CH620, CH621, CH640, CH641, CV18, CV20, CV22, CV620, CV624 and CV640. Some CH22, CH620 and CH640 engines are the 80mm, 674cc version, so check the displacement on the nameplate.
• STANDARD 77.00MM BORE - Replaces ring set 24-108-22-S. For a cylinder that has not been bored oversize.
• CHECK THE BORE FIRST - Rings will not seal a scored, glazed or out-of-round bore. Measure taper and out of round, hone lightly for a crosshatch, and check the end gap of each ring in the bore it will run in.