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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Models Covered & Key Technical Specifications
Enhanced Training Electrical Manual: Evinrude Outboard Motors 1.5–35 HP, covers 1965-1978 Assembly-Guide Evinrude 1.5–35 HP (1965-1978) (388150) | 1965-1978 Outboard Motor Repository
- Engineered Specifications Data: 25 hp @ 5,000 rpm establishes the nominal operational output.
- Principal Operating Range: For efficient performance, 4,500-5,500 rpm defines the recommended throttle band.
- Advanced Bore and Stroke: The engine requires 3.000 in. bore x 2.250 in. for robust mechanical function.
- Primary Cylinder Configuration: The engine is a 2-cylinder, 2-cycle design for optimal power delivery.
- Standard Carburetion Settings: Single barrel, float feed, high- and low-speed adjustments are standard for efficient fuel mixture.
- Engineered Ignition System: Magneto breakerless CD ignites the fuel mixture to initiate combustion.
Professional Workshop Service Manual & Technical Specifications
Enhanced Training Electrical Manual: Evinrude Outboard Motors 1.5–35 HP, covers 1965-1978 Assembly-Guide
Model-Portfolio: Evinrude 1.5–35 HP (1965-1978) (388150) // Calibration-Scope: Outboard Motor / Engine Logic // Model-Portfolio: Service Manual
OEM specifications cover a wide range of Evinrude outboard motors from 1.5 to 35 HP, manufactured between 1965 and 1978. This manual provides essential information for maintenance, repair, and troubleshooting.
TECHNICAL SPECIFICATIONS
| Assessment-Element | Parameters | Architecture |
|---|---|---|
| Engine Type | 2-cylinder, 2-cycle | Standard |
| Horsepower | 1.5 hp to 35 hp | Performance |
| Model Years | 1965-1978 | Coverage |
| Fuel Mixture | 50:1 Oil Ratio | Lubrication |
This manual documents various systems including the fuel system, ignition system, electrical system, and lower unit. It details procedures for disassembly, assembly, and repair, ensuring that mechanics can perform necessary maintenance. Information on troubleshooting common issues is also provided.
Wear limits are specified for internal engine components to ensure longevity and optimal performance.
System operation descriptions cover the fuel delivery, ignition timing, and electrical charging systems.
The documentation addresses troubleshooting common problems such as starting issues, loss of power, and overheating.
Assembly instructions are detailed for the power head, lower unit, and starter components.
Hydraulic schematics are included for the gearcase and associated systems.
This manual documents torque specifications for various fasteners to ensure gasket seal integrity.
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