1973-1990 Evinrude/Johnson Outboard Motor 2-40 HP Service Manual

Technical reference spanning 2-40 HP Evinrude/Johnson outboard motors from 1973-1990. Includes detailed diagrams, maintenance schedules, and troubleshooting. Publication B732.

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Technical Safety Notice
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This official OEM document is intended for professional technicians and skilled operators. Performing service on mechanical equipment involves inherent risks. By purchasing, you acknowledge that RepairLoader provides original manufacturer data for informational purposes. Always prioritize safety: use correct tools, wear protective gear, and consult a certified professional if you are uncertain of any procedure.

Evinrude Models Covered & Key Technical Specifications

Models: Evinrude Outboard Motor, Johnson Outboard Motor
Sub-models / Variants: 2 HP, 2.5 HP, 3 HP, 4 HP (Weedless, Standard, Deluxe), 5 HP, 6 HP, 7.5 HP, 8 HP, 9.5 HP, 9.9 HP, 15 HP, 18 HP, 20 HP, 25 HP, 28 HP, 30 HP, 35 HP, 40 HP, Electric Motors
Build Years: 1973–1990
Technical Data:

  • Engine type: 2-stroke
  • Ignition systems: Magneto breaker point, CD 2, CD2UL
  • Starting types: Manual rope rewind, electric start, 12-volt/24-volt electric trolling motors
  • Fuel system: Carbureted, oil injection systems (1987-on)
  • Fastener torque (standard bolts): 7–10 in-lbs (No. 6) to 28–30 ft-lbs (7/16 in.)
Technical Specifications
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Document Number / Seller:
30051 / Mary Scott
File Size:
165.53 MB
File Type:
ZIP
Language:
English
Printable:
Yes
Category:
Outboard Motor
Last updated / verified
Aug 20, 2025

Evinrude Manual Features & Content Preview

Technical Scope of the 1973–1990 Evinrude/Johnson Outboard Shop Manual

  • Covers 1973–1990 Evinrude and Johnson 2 HP through 40 HP outboard motors, including electric trolling variants and 2-stroke combustion models
  • Third-party publication: Clymer Intertek official outboard shop manual B732
  • Contains 41 detailed technical figures, extensive wiring schematics, gearcase clearance charts, and spark plug gap tables
  • Downloads to your account within seconds of checkout
  • Your order stays downloadable from your account for life
  • Indexed PDF search covers every chapter and appendix
  • Full-text search finds any part number in seconds
  • This 1973–1990 Evinrude/Johnson publication documents the transition from breaker point to CD 2 and CD2UL ignition systems across the 2-40 HP model range

Engine and Electrical Coverage

The 1973–1990 Evinrude/Johnson outboard shop manual provides extensive technical data for servicing 2-stroke marine engines, documenting the internal operating principles, lubrication requirements, and fuel system calibration for the 2–40 HP range. Detailed sections explain mechanical synchronization of linkages and carburetors, while the electrical system documentation covers magneto, CD 2, and CD2UL ignition configurations alongside electric motor diagnostics.

Specification Previews

Engine maintenance schedules and technical parameters are detailed across multiple charts, providing critical reference points for understanding parts documentation for vintage outboard motors. Torque specifications for ignition coils are listed at 60–80 in-lbs in the quick reference data. Spark plug gaps are documented at 0.030–0.040 inches depending on the specific engine model. Propeller shaft bearing housing bushing clearance for 6 HP models is specified at 0.0015–0.0030 inches in the gearcase clearance table. The manual serves as an authoritative resource for mechanics and marine enthusiasts focusing on the 1973–1990 Evinrude/Johnson outboard motors ranging from 2 HP to 40 HP.

Manual FAQ, Purchase & Download Details

Which engine systems and power head components are detailed in the manual coverage? keyboard_arrow_down

Document includes technical chapters dedicated to the power head, fuel system, lubrication, maintenance, and engine synchronization for the 2-40 HP outboard motor range.

Are there reference tables included for gearcase clearance specifications and tightening torques? keyboard_arrow_down

Yes, the manual contains quick reference data sections that list tightening torques for fasteners and clearance specifications for gearcase components. These tables are provided to support reference needs for the various motor models covered.

Is there a specific section provided that contains wiring diagrams for the electrical systems? keyboard_arrow_down

Chapter 13 is explicitly dedicated to comprehensive wiring diagrams for the covered outboard motors.

What information regarding the digital format and access can buyers expect? keyboard_arrow_down

Manual is provided as a downloadable PDF file that is compatible with most devices for convenient viewing. Access is immediate upon completion of the payment process. This document is available in English and covers the 1973 to 1990 model years.

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