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SERVICE DATA AND SPECIFICATIONS (SDS) EM-97 [QG] C D E F G H I J K L M A EM SPARK PLUG CYLINDER HEAD Unit: mm (in) VALVE Unit: mm (in) Valve Clearance Shim Type Unit: mm (in) *: At a temperature of approximately 20 ° C (68 ° F) Shimless Type Make NGK Champion Type Standard LFR5A-11 REC10YC4 Hot LFR4A-11 — Cold LFR6A-11 — Plug gap 1.0 - 1.1 mm (0.039 - 0.043 in) Standard Limit Head surface distortion Less than 0.03 (0.0012) 0.1 (0.004) Height 117.9 (4.642) — Valve head diameter “D” Intake 29.9 - 30.2 (1.177 - 1.189) Exhaust 24.9 - 25.2 (0.980 - 0.992) Valve length “L” Intake 92.00 - 92.50 (3.6220 - 3.6417) Exhaust 92.37 - 92.87 (3.6366 - 3.6563) Valve stem diameter “d” Intake 5.465 - 5.480 (0.2152 - 0.2157) Exhaust 5.445 - 5.460 (0.2144 - 0.2150) Valve seat angle “ α ” 44 ° 15 ′ - 44 ° 45 ′ Valve margin “T” 0.8 - 0.14 (0.031 - 0.055) Valve margin “T” limit More than 0.5 (0.020) Valve stem end surface grinding limit 0.2 (0.008) SEM188 For adjusting For checking Hot Cold* (reference data) Hot Intake 0.304 - 0.416 (0.012 - 0.016) 0.25 - 0.33 (0.010 - 0.013) 0.21 - 0.47 (0.008 - 0.019) Exhaust 0.348 - 0.472 (0.014 - 0.019) 0.32 - 0.40 (0.013 - 0.016) 0.30 - 0.56 (0.012 - 0.022) Hot Cold* (reference data) Intake 0.32 - 0.40 (0.013 - 0.016) 0.24 - 0.32 (0.009 - 0.013) Exhaust 0.33 - 0.41 (0.013 - 0.016) 0.26 - 0.34 (0.010 - 0.013) |