ABYC’s current Diesel Engines and Gasoline Engines certification have merged into a comprehensive Marine Engines and Fuel Systems certification! This updates streamlined the process, ensured the certification remains relevant in a rapidly evolving industry, and provided ABYC members with a valuable credential. Current holders of Diesel Engines and/or Gasoline Engines certifications will have the opportunity to transition to the new certification at the end of their 5 year certification life during the recertification process.

ABYC will continue to recognize the Diesel Engines and Gasoline Engines certifications, though their exams and associated materials will no longer be offered once the new certification is launched. We plan to launch the Marine Engines and Fuel Systems certification in October 2024 with the first online course.

Course Description

The Marine Engines and Fuel Systems Certification focuses on the ABYC Standards that apply to both gasoline (petrol) and diesel-fuel engines, and the systems they are connected to, such as fuel, electric, drives, and exhaust. Basic troubleshooting, repair and maintenance of these various systems are also addressed.


Topics & Standards Covered

  • Principles of engine operation
  • 2 stroke vs 4 stroke operation
  • Gasoline vs Diesel fuel
  • Basic troubleshooting
  • Safety around engines
  • Gasoline and diesel Standards
  • Fuel-tank Standards
  • Fuel-system maintenance
  • Troubleshooting fuel systems
  • Gas- and Diesel-engine ventilation Standards
  • Engine exhaust system Standards
  • Exhaust system inspection, maintenance, troubleshooting and repair
  • Engine electrical systems
  • Battery and cable installation
  • Battery types
  • Alternator charging
  • Engine cooling systems and components
  • Troubleshooting and repair of cooling systems
  • Mechanical and electronic engine-control system Standards
  • Troubleshooting, repair and maintenance of mechanical and electronic controls
  • Drive-system Standards
  • Inboard, outboard, sterndrive and saildrive systems
  • Customer relations, quality control and warranty management

ABYC Standards

  • A-33, Emergency Engine/Propulsion Cut-Off Devices
  • E-2, Cathodic Protection
  • E-10, Storage Batteries
  • E-11, AC and DC Electrical Systems for Boats
  • E-13, Lithium Ion Batteries
  • H-2, Ventilation of Boats using Gasoline
  • H-24, Gasoline (Petrol) Fuel Systems
  • H-25, Portable and Semi-Portable Marine Gasoline Fuel Systems
  • H-27, Seacocks, Thru-Hull Fittings, and Drain Plugs
  • H-33, Diesel Fuel Systems
  • P-1, Installation of Exhaust Systems for Propulsion and Auxiliary Engines
  • P-4, Marine Inboard Engines and Transmissions
  • P-6, Propeller Shafting Systems
  • P-14, Mechanical Propulsion Control Systems
  • P-17, Manual and Assisted Mechanical Steering System
  • P-21, Manual and Assisted Hydraulic Steering Systems
  • P-28, Electric/Electronic Control Systems for Propulsion and Steering
  • TH-22, Educational Information about Carbon Monoxide
  • TH-23, Design, Construction, and Testing for Boats in Consideration for Carbon Monoxide

Exam/Credit Details

  • Online Course Fees: Member $985 – Nonmember $1,495
  • Exam Only Fees: Member $295 – Nonmember $595 per attempt
  • The exam is comprised of 220 questions
  • Passing score: 85%
  • Timed Exam: 3 Hours 40 Minutes
  • CEUs available: 32

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