Mercury V8 300 User Manual

• CO family emissions level
• Recommended spark plug and gap
• Percent of fuel line permeation
Service Replacement EPA Decal
IMPORTANT: By federal law, it is required that all 1998 and newer Mercury Marine outboards have a visible and legible
emission certification decal. If this decal is missing or damaged, contact Mercury Marine Service for a replacement.
Removal
Remove all remaining pieces of the damaged or illegible decal. Do not install the new decal over a damaged old decal. Use a
suitable solvent to remove any traces of the old decal adhesive from the display location.
NOTE: If the original decal surface is in good condition, it is acceptable to clean the surface and apply the new decal over the
original.
Installation
Apply the decal on a clean surface in the original factory location.
Emissions
Page 1C-4 © 2018 Mercury Marine 90-8M0146617 eng JULY 2018

Mercury V8 300 Specifications

General

Horsepower	300 HP
Displacement	4.6 L
Full Throttle RPM Range	5200-6000 RPM
Fuel Induction System	Electronic Fuel Injection (EFI)
Gear Ratio	1.75:1
Starting	Electric
Shaft Length	20 in, 25 in, 30 in
Warranty	3-Year Limited Warranty
Engine Type	V8
Fuel Type	87 Octane
Bore x Stroke	92 mm x 86 mm