Evinrude Johnson 28 HP Outboard 1973–1978 Service Repair Manual – PDF Download

🛠️ Evinrude Johnson 28 HP Outboard 1973–1978 Service Repair Manual – PDF Download

🧰 This OEM factory service manual provides detailed maintenance and repair procedures for Evinrude and Johnson 28 HP 2-stroke outboards built between 1973 and 1978. Includes comprehensive sections on ignition system service, carburetor tuning, cooling maintenance, and recoil starter repair.

📲 Instant PDF download – fully searchable and printable for workshop or home use.

🔍 Model Background

The Evinrude Johnson 28 HP Outboard (1973–1978) was a compact and efficient 2-stroke twin-cylinder engine aimed at recreational boaters who needed dependable power for small to medium-sized boats. Produced by Outboard Marine Corporation (OMC), it filled the gap between the 25 HP and 30 HP models, offering a solid mix of performance, fuel efficiency, and portability.

Powered by a twin-cylinder, loop-charged 2-stroke engine with a displacement of approximately 521cc, the 28 HP variant shared core architecture with other models in its class. The engine was known for its responsive throttle, reliable low-RPM operation, and smooth cruising characteristics.

Standard features included manual or electric starting options, tiller or remote steering capability, and a single-carburetor fuel delivery system. Its relatively lightweight build — typically around 120–130 lbs — made it a manageable option for single-handed installation or portage.

Despite its short production lifespan, the 28 HP model gained favor with owners of small fishing boats, utility skiffs, and inflatables due to its balance of power and economy. While it was eventually phased out in favor of standardized 25 and 30 HP options, it remains a notable piece of 1970s OMC engineering.

Today, the 28 HP Evinrude/Johnson is considered a rarer model with vintage appeal, appreciated by collectors and small craft enthusiasts for its simplicity and reliability.

📄 Manual Details for Evinrude Johnson 28 HP (1973–1978):

• Engine Type: 2-stroke, twin-cylinder
• Fuel System: Carbureted, external tank compatible
• Cooling System: Water-cooled with impeller pump
• Ignition System: Magneto ignition system
• Starting System: Manual recoil start
• Trim & Tilt: Manual tilt system
• Years Covered: 1973–1978
• File Format: PDF (searchable and printable)
• Page Count: 200+ pages

📆 Model Years Covered:

• Evinrude Johnson 28 HP Outboard 1973
• Evinrude Johnson 28 HP Outboard 1974
• Evinrude Johnson 28 HP Outboard 1975
• Evinrude Johnson 28 HP Outboard 1976
• Evinrude Johnson 28 HP Outboard 1977
• Evinrude Johnson 28 HP Outboard 1978

📖 Manual Sections Include:

• Routine Maintenance
• Fuel/oil mix, spark plug gap, idle speed adjustment
• Fuel & Carburetor System
• Float level adjustment, choke operation, jet sizing
• Ignition System
• Magneto coil testing, points gap, condenser checks
• Cooling System
• Impeller service, thermostat inspection, water passage cleaning
• Powerhead Repair
• Piston and ring replacement, crankcase gasket service
• Starter System
• Recoil spring and rope replacement, handle service
• Electrical Schematics
• Ignition wiring and kill switch diagrams

💾 Format & Compatibility:

• File Type: PDF (Digital Download)
• Searchable & Printable: ✅ Yes
• Compatible with: Windows, macOS, iOS, Android, Linux

🔍 Keywords:

Evinrude 28 HP repair manual, Johnson 28 HP outboard PDF, magneto ignition, carburetor tuning, cooling system maintenance, starter rope service

❓ Mini FAQ:

Q: Is this manual suitable for both Johnson and Evinrude 28 HP engines?
A: Yes – it covers both brands from 1973 through 1978.

Q: Does this manual include wiring diagrams?
A: Yes – complete ignition and kill switch schematics are included.

Q: Can I print the manual by sections?
A: Absolutely – the PDF supports printing of individual chapters or the entire manual.

🧭 Helpful Resources for Johnson & Evinrude Outboard Owners

• Why Every Evinrude & Johnson Outboard Owner Should Own a Service Manual – Find out how a downloadable repair manual can simplify maintenance and help you troubleshoot common problems on your own.
• Outboard Engine Troubleshooter – Not sure what’s wrong with your Johnson or Evinrude engine? Our free tool lists common issues and DIY fixes across all major brands.

🔧 Browse More Johnson & Evinrude Manuals

Note: While our manuals are designed for DIY use, they do not replace professional mechanical training. If you're unsure about a repair or your engine shows serious issues, we strongly recommend visiting a certified marine mechanic. These guides are best suited for owners with basic to moderate mechanical experience.