Kawasaki S2 (1972-1973) [26/129] Piston rings

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3 Assembly This is the reverse of disassembly CAUTION 1 Insert the piston so that the arrow stamped on the top points to the exhaust side 2 Use a new piston pin circlip in place of the one removed during disassembly Align the circlip so that its opening does not face either groove in the piston 2 Overhaul a Piston Ring Wear 1 As the ring wears the end gap g larger allowing compression leakage Follo the illustration insert the ring 20 inch 5 into a cylinder with a standard inside diam With the ring in a horizontal position with re to the bottom of the cylinder measure the gap with a thickness gauge The standard ga 006 014 in 0 15 0 35 mm If the exceeds 028 in 0 7 mm replace the ring 4 PISTON RINGS There are two piston rings the main function of which is to prevent compression leakage The top ring also called the compression ring has chamferred outer edges while the second ring is un chamferred The top ring can also be easily identified by its chromed outer edge designed to minimize wear at liigh temperatures 2 There is a difference is in tension betw the ends of the ring and the center and co quently a difference in wear Therefore mea A and B with vernier calipers or a microm at the three points indicated Spread the opening of the piston ring with both thumbs and push up the opposite side of the ring Ring Measurement

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