Yamaha YZF-R6 Service Manual
Also see for 1999 YZF-R6: Service manual
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Contents
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4-69CONNECTING RODS AND PISTONS ENGNOTE:EAS00262CHECKING THE CYLINDER AND PISTONSThe following procedure applies to all of the cyl-inders and pistons.1. Check: piston wall cylinder wallVertical scratches Replace the crank-cases, and the piston and piston rings as aset.2. Measure: piston-to-cylinder clearancea. Measure cylinder bore “C” with the cylinderbore gauge.Measure cylinder bore “C” by taking side-to-side and front-to-back measurements of thecylinder. Then, find the average of the measure-ments.Cylinder bore gauge90890-03017Cylinder bore “C” 65.50 65.51 mmMax. taper “T” 0.05 mmOut of round “R” 0.05 mmb. If out of specification, replace the crank-cases, and the piston and piston rings as aset.c. Measure piston skirt diameter “P” with themicrometer.Micrometer90890-03008a 4 mm from the bottom edge of the pistonPiston size “P”Standard 65.460 65.475 mmd. If out of specification, replace the piston andpiston rings as a set. |
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