Mercury 8 Bigfoot 4-Stroke User Manual page 24

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