Mercury Mariner 8/9.9HP 4-Stroke Factory Service Manual, Page 74Get this manual
Specifications Idle RPM Trolling RPM Wide Open Throttle (WOT) RPM 8.09.9 (BODENSEE) 9.9 Pilot Screw (Turns Out) 8.09.9 (BODENSEE) 9.9 Main Jet Size 8.09.9 (BODENSEE) 9.9 Pilot Jet Enrichener Jet Float Height Ignition Timing (Full Retarded) 850 50 RPM (Full Advanced) 2500-3000 RPM Type Spark Plug Type (NGK) Spark Plug Gap Firing Order 950 50 RPM (Out Of Gear) 850 50 50005500 45005500 Not Adjustable 31 #82 #86 #48 .024 (0.61 mm) 0.04 in(25.5 mm) B.T.D.C35 B.T.D.CCapacitor Discharge Ignition CR6HS 0.0240.028 in(0.60.7 mm) 1-2
CARBURETOR SPECIFICATIONS
TIMING SPECIFICATIONS