CYLINDER HEAD/VALVE V45 VALVE STEM-TO-GUIDE CLEARANCE Inspect each valve for bending, burning, scratches or abnormal stem wear. Check valve movement in the guide and measure and record each valve stem O.D. SERVICE LIMITS: IN: 5.47 mm (0.215 in) EX: 5.45 mm (0.214 in) VALVE GUIDE REAMER 07984-2000000 NOTE: Ream the guides to remove any carbon buildup before checking clearances. Measure and record each valve guide I.D. using a ball gauge or inside micrometer. SERVICE LIMIT: 5.55 mm (0.219 in) Subtract each valve stem O.D. from the corresponding guide I.D. to obtain the stem to guide clearance. SERVICE LIMIT: IN: 0.08 mm (0.003 in) EX: 0.10 mm (0.004 in) NOTE: If the stem-to-guide clearance exceeds the service limits, determine if a new guide with standard dimensions would bring the clearance within tolerance. If so, replace any guides as necessary and ream to fit. If the stem-to-guide clearance exceeds the service limits with new guides, also replace the valves. NOTE: Reface the valve seats whenever the valve guides are replaced (page 10-13). 146 Date of Issue: May, 1982 0 HONDA MOTOR CO., LTD. 10-12