156603-4400 ZEXEL 9 423 617 015 BOSCH BLEEDER SCREW 9423617015 1566034400 9813850230

4.236 Five Ring Piston(1) First (top) compression ring: Width of compression ring ... 2.357 to 2.383 mm (.0928 to .0938 in)Clearance between ends of ring installed in cylinder liner that has no wear ... 0.41 to 0.86 mm (.016 to .034 in)(2) Second and third compression rings: Width of compression rings ... 2.357 to 2.383 mm (.0928 to .0938 in)Clearance between ends of each ring installed in cylinder liner that has no wear ... 0.30 to 0.76 mm (.012 to .030 in)(3), (4) Fourth and fifth oil rings: Width of oil rings ... 6.32 to 6.35 mm (.249 to .250 in)Clearance between ends of each ring installed in cylinder liner that has no wear ... 0.30 to 0.76 mm (.012 to .030 in)(5), (6), (7) Width of each groove for compression rings ... 2.431 to 2.456 (.0957 to .0967 in) Ring clearance in the groove ... 0.048 to 0.099 mm (.0019 to .0039)(8), (11) Width of each groove for oil rings ... 6.414 to 6.439 mm (.2525 to .2535 in) Ring clearance in the groove ... 0.064 to 0.114 mm (.0025 to .0045 in)(9) Diameter of piston pin (new) ... 34.920 to 34.93 mm (1.3748 to 1.375 in)(10) Bore in piston for pin ... 34.9212 to