1965-1978 Evinrude Outboard Motors 1.5-35 HP Service Manual

Evinrude professional-grade outboard motor service and repair guide for 1.5 to 35 HP engines from 1965-1978. Covers essential maintenance and troubleshooting procedures. Part No. 388150.

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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 1.5 HP, 2 HP, 3 HP, 4 HP, 5 HP, 6 HP, 9.5 HP, 9.9 HP, 15 HP, 18 HP, 25 HP, 33 HP, 35 HP
Sub-models / Variants: 2-cylinder, 2-cycle, Manual Starter, Electric Starter, Weedless Gearcase, Standard Gearcase, Yachtwin, Lightwin, Ducktwin, Ski-Twin
Build Years: 1965–1978
Technical Data:

  • Engine configuration: 2-cycle, 2-cylinder (180-degree crank)
  • Operating RPM range: 3,500–6,000 RPM (model dependent)
  • Carburetion: Single barrel, float feed with high- and low-speed needle adjustments
  • Ignition system: Flywheel magneto, breakerless CD on select models
  • Cooling system: Centri-matic (positive displacement and centrifugal pump)
  • Propeller drive: Stainless steel pin (3/16 in. diameter)
  • Spark plug torque: 17.5–20.5 ft-lb
Technical Specifications
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Document Number / Seller:
30112 / Christopher Williams
File Size:
50.98 MB
File Type:
PDF
Language:
English
Pages:
202
Printable:
Yes
Category:
Outboard Motor
Last updated / verified
Feb 4, 2025

Evinrude Manual Features & Content Preview

1965–1978 Evinrude Outboard Motors Service Manual

  • Covers 1965–1978 Evinrude outboard motors from 1.5 HP through 35 HP, detailing 2-cylinder, 2-cycle, and electric start configurations
  • Official OEM service publication, Evinrude Service Repair Handbook 1.5 to 35 hp 1965-1978, first edition
  • Contains 48 exploded-view diagrams and 9 dedicated electrical wiring schematics
  • 202 pages of technical reference documentation for power head, fuel system, and lower unit maintenance
  • Delivered as a direct download the moment payment clears
  • Indexed PDF search covers every chapter and appendix
  • This 1965–1978 Evinrude service manual is the foundational reference used for the 1.5–35 HP series, providing essential clearance tables and torque charts for late-model 35 HP motors introduced in 1976

Engine and Fuel System Documentation

The 1965–1978 Evinrude outboard motor documentation provides a structured overview of the power head, fuel system, and electrical components across the 1.5–35 HP range. Chapters explore carburetor operation, detailing the float mechanism, fuel-to-oil mixing ratios, and high-speed needle adjustment for varying altitude conditions. Troubleshooting sections isolate performance issues such as flat spots, power loss, and ignition timing faults using standardized testing techniques.

Electrical and Specification Highlights

Wiring diagrams for the 1965–1978 Evinrude range span manual and electric starter configurations, including specific pinouts for 12-volt battery connections and alternator output. Engine specifications include bore and stroke data, piston ring gaps, and crankshaft journal clearances found in the comprehensive technical manual data. Torque charts list precise tightening values in both ft-lbs and in-lbs for critical power head components like flywheel nuts and cylinder head screws. Battery maintenance sections outline specific gravity thresholds of 1.260–1.280 and charging safety protocols for the 6N6-3B unit. The 1965–1978 Evinrude outboard motor service manual is a complete 202-page technical guide designed for owners and technicians to maintain engines through detailed exploded-view schematics, torque specifications, and system-specific diagnostic procedures.

Manual FAQ, Purchase & Download Details

Are the power head and lower unit chapters detailed enough to cover assembly sequences and part identification for the listed outboard motors? keyboard_arrow_down

Yes, these chapters contain information regarding components of the power head and lower unit. They also include exploded views that illustrate the sequence of parts and assembly.

Does the document provide electrical system information for the included outboard motor models? keyboard_arrow_down

Manual contains a dedicated chapter for electrical systems and references technical specifications for ignition components and starters.

Can I find tightening specifications and clearance references for internal engine parts in this manual? keyboard_arrow_down

Document includes tables that list tightening torque values and operational clearances for various assemblies. These tables are organized by engine model and horsepower to serve as a reference.

Is there a supplement in the manual that covers later motor models from the 1976 to 1978 production years? keyboard_arrow_down

Publication includes a specific supplement section that contains service information for late-model engines introduced between 1976 and 1978.

What information regarding parts and exploded views does this service manual contain? keyboard_arrow_down

Handbook features exploded views that illustrate the arrangement of parts across various sub-assemblies. These diagrams are included to show the correct order of components for the systems listed. This visual information acts as a reference for identifying parts throughout the manual.

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