Mercury 300R HD CMS Mechanical User Manual

General Information
Boater's Responsibilities..................................................................................... 1
Before Operating Your Outboard........................................................................ 1
Boat Horsepower Capacity................................................................................. 1
High‑Speed and High‑Performance Boat Operation.......................................... 2
Propeller Selection..............................................................................................2
Outboard Remote Control Models ..................................................................... 4
Lanyard Stop Switch........................................................................................... 5
Protecting People in the Water........................................................................... 7
Passenger Safety Message ‑ Pontoon Boats and Deck Boats...........................8
Wave and Wake Jumping................................................................................... 9
Impact with Underwater Hazards......................................................................10
Exhaust Emissions........................................................................................... 11
Selecting Accessories for Your Outboard......................................................... 13
Safe Boating Recommendations...................................................................... 13
Recording Serial Number................................................................................. 16
Specifications—300R HD................................................................................. 17
Component Identification.................................................................................. 19
Gearcase Identification..................................................................................... 20
Transporting
Trailering Boat/Outboard.................................................................................. 21
Fuel and Oil
Fuel Requirements........................................................................................... 22
Fuel Additives................................................................................................... 23
Low Permeation Fuel Hose Requirement ........................................................ 23
Fuel Demand Valve (FDV) Requirement.......................................................... 23
Engine Oil Recommendations—Race (R) Models............................................ 24
Checking and Adding Engine Oil...................................................................... 24
Features and Controls
Adaptive Speed Control.................................................................................... 28
Remote Control Features................................................................................. 28
Warning System............................................................................................... 28
Power Trim and Tilt...........................................................................................31
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Mercury 300R HD CMS Mechanical Specifications

General

Brand	Mercury
Model	300R HD CMS Mechanical
Category	Outboard Motor
Language	English