80mm Rebuild Kit with Rods Valves Fits Kohler CH23 CH680 CV23

A rebuild kit with connecting rods and valves for the Kohler 80mm, 674cc twin-cylinder engines. The kit contains two 80mm standard pistons with wrist pins and circlips (replacing 24-874-54-S), two ring sets, two connecting rods, intake and exhaust valves, the complete gasket set (head, valve cover, intake, exhaust and breather gaskets and O-rings), two crankshaft oil seals and crankcase sealer. It fits the CH23, CH670, CH680, CV23, CV670 and CV680, plus the 674cc builds of the CH22, CH620, CH640, CV22, CV620 and CV640. Those six were also built as 77mm, 624cc engines, so check the displacement on the nameplate: 674cc is this kit. The engine is 80mm bore by 67mm stroke. For standard 80mm bores only; a bored cylinder needs oversize pistons. The pistons come with their own rings, so there is no need to measure the old ring grooves. Check crankpin and rod clearance, lap the valves to their seats, and tighten rod and head bolts to the service manual figures. PISTONS, RINGS, RODS, VALVES, GASKETS AND SEALS - Two 80mm standard pistons with wrist pins and clips, two ring sets, two connecting rods, intake and exhaust valves, the complete gasket set (head, valve cover, intake, exhaust and breather gaskets and O-rings), two crankshaft seals and crankcase sealer. FITS KOHLER 80MM, 674CC TWINS - CH23, CH670, CH680, CV23, CV670 and CV680, plus the 674cc builds of the CH22, CH620, CH640, CV22, CV620 and CV640. Those six were also built as 77mm, 624cc engines, so check the displacement on the nameplate: 674cc is this kit. REPLACES 24-874-54-S - Two standard 80mm pistons, each with its own matched ring set, so there is no need to measure the old ring grooves. STANDARD BORE ONLY - For cylinders at the 80mm standard size. A bored cylinder needs oversize pistons to match. WHILE IT IS APART - Check the crankpin and rod clearance before the new rods go on, lap the new valves to their seats, check each bore for taper and ring end gap, and tighten rod and head bolts to the service manual figures.