7. CYLINDER/PISTON STRYKER 125/150 CYLINDER INSPECTION Inspect the cylinder bore for wear, scratches or damage. Measure the cylinder I.D. at three levels of top, middle and bottom at 90° to the piston pin (in both X and Y directions). Service Limit: 150cc: 62.20mm replace if over 125cc: 56.70mm replace if over Top Measure the cylinder-to-piston clearance and Middle take the maximum figure measured. Bottom Service Limit: 0.1mm repair or replace if over The true roundness is the difference between the values measured in X and Y directions. The cylindricity (difference between the values measured at the three levels in X or Y directions) is subject to the maximum value calculated. Top Service Limits: True Roundness: 0.05mm repair or replace Middle if over Cylindricity: 0.05mm repair or replace if over Bottom Inspect the top of the cylinder for warpage. Service Limit: 0.05mm repair or replace if over 7-6