Intake and Exhaust Valves/Specifications CTM2 (19APR90) 15-3 16, 18, 20 & 24HP Onan Engines AllTractorManuals.com 130495 SPECIFICATIONS Intake and Exhaust Valves (B43E, B43G, B48G, AND T260 Engines) Item New Specification Wear Tolerance 1. Exhaust Valve Stem O.D. 8.66—8.67 mm 8.64 mm (0.340 in.) (0.341—0.3414 in.) 2. Intake Valve Stem O.D. 8.70—8.71 mm 8.66 mm (0.341 in.) (0.3425—0.3429 in.) 3. Valve Face Angle 44˚ 4. Valve Face Margin 0.787 mm (0.031 in.) 5. Valve Spring Free length (approx.) 42.21 mm (1.662 in.) Test length 34.92 mm (1.375 in.) at 169—187 N (38—42 lb force) 6.
Valve Cover Cap Screw Torque 2.1 ± 0.7 N·m (18 ± 6 lb-in.) Intake and Exhaust Valves (P218G and P220G Engines) Item New Specification Wear Tolerance 1. Exhaust Valve Stem O.D. 7.061—7.074 mm 7.05 mm (0.2775 in.) (0.2780—0.2785 in.) 2. Intake Valve Stem O.D. 7.099—7.112 mm 7.07 mm (0.2783 in.). (0.2795—0.2800 in.) 3. Valve Face Angle 44˚ 4. Valve Face Margin 0.787 mm (0.031 in.) 5. Valve Spring Free length (approx.) 40.64 mm (1.60 in.) Test length 26.67 mm (1.05 in.) at 245N (55 lb force) 6. Valve Cover Cap Screw Torque 2.1 ± 0.7 N·m (18 ± 6 lb-in.) M98,2015K,4 -19-10FEB87 15 3