Mercury 8 Bigfoot 4-Stroke - Page 24

GENERAL INFORMATION
18
Models 8.0 9.9 9.9 Bigfoot
Cylinder Bore 55 mm (2.17 in.)
Piston Stroke 44 mm (1.73 in.)
Valve Clearance (Cold)
Intake Valve 0.13‑0.17 mm (0.0051‑0.0067 in.)
Exhaust Valve 0.18‑0.22 mm (0.0071‑0.0087 in.)
Recommended Spark
Plug
NGK DCPR6E
Spark Plug Gap 0.8‑0.9 mm (0.031‑ 0.035 in.)
Gear Ratio 2.08:1 2.42:1
Recommended Gasoline Refer to Fuel & Oil
Recommended Oil Refer to Fuel & Oil
Engine Oil Capacity 800 ml (27.0 fl. oz.)
Gearcase Lubricant
Capacity
320 ml (10.8 fl. oz.) 370 ml (12.5 fl. oz.)
Battery Rating (electric
start models)
465 Marine Cranking Amps (MCA) or 350 Cold Cranking
Amps (CCA)
Sound at Drivers Ear
(ICOMIA 39‑94)
4 ‑ Stroke 78