Mercury Mariner 4, 5, and 6HP 4-Stroke Factory Service Manual, Page 10Get this manual
SPECIFICATIONS
ValveValve SeatValve Guides: Valve Clearance (cold) Intake Exhaust Valve Dimensions: "A" Head Diameter Intake Exhaust "B" Face Width Intake Exhaust "C" Seat Width Intake Exhaust "D" Margin Thickness Intake Exhaust Stem Outside Diameter Intake Exhaust Guide Inside Diameter Intake Exhaust Stem To Guide Clearance Intake Exhaust Stem Run-out Limit (max
0.0020.005 in(0.060.14 mm) 0.0040.007 in(0.110.19 mm) 0.9800.988 in(24.925.1 mm) 0.9410.949 in(23.924.1 mm) 0.102 in(2.6 mm) 0.102 in(2.6 mm) 0.031 in(0.8 mm) 0.031 in(0.8 mm) 0.028 in(0.7 mm) 0.047 in(1.2 mm) 0.216 in(5.48 mm) 0.214 in(5.44 mm) 0.2165 in(5.5 mm) 0.2165 in(5.5 mm) 0.00080.0017 in(0.0200.044 mm) 0.00180.0028 in(0.0450.072 mm) 0.0006 in(0.016 mm)