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Diagram and list identifying all parts of the Evinrude outboard motor.
Guidance on selecting and using appropriate gasoline for the motor.
Specific oil types and recommended 50:1 fuel mixture ratios.
Instructions for the first 5 hours of operation to break in the new motor.
Recommended transom dimensions for optimal motor installation.
Detailed steps for starting the Evinrude motor, including choke and speed control.
Steps to diagnose and resolve issues when the motor fails to run.
Diagnosing and resolving issues when the motor fails to start.
Fixing problems related to the motor's inability to idle properly.
Identifying causes and solutions for a loss of motor power.
Resolving issues causing the motor to vibrate excessively.
Diagnosing why the motor runs but the boat movement is impaired.
Specific instructions for draining, refilling, and lubricating the gearcase.
Detailed steps for properly storing the motor during the off-season.
Procedures for motors that have been submerged in fresh or salt water.
Diagram and list identifying all parts of the Evinrude outboard motor.
Guidance on selecting and using appropriate gasoline for the motor.
Specific oil types and recommended 50:1 fuel mixture ratios.
Instructions for the first 5 hours of operation to break in the new motor.
Recommended transom dimensions for optimal motor installation.
Detailed steps for starting the Evinrude motor, including choke and speed control.
Steps to diagnose and resolve issues when the motor fails to run.
Diagnosing and resolving issues when the motor fails to start.
Fixing problems related to the motor's inability to idle properly.
Identifying causes and solutions for a loss of motor power.
Resolving issues causing the motor to vibrate excessively.
Diagnosing why the motor runs but the boat movement is impaired.
Specific instructions for draining, refilling, and lubricating the gearcase.
Detailed steps for properly storing the motor during the off-season.
Procedures for motors that have been submerged in fresh or salt water.
This document is an owner's manual for the 1969 Evinrude 6hp Fisherman outboard motor, models 6902 and 6903. It provides comprehensive information on the motor's operation, maintenance, and troubleshooting, designed to help both new and experienced boaters get the most out of their Evinrude.
The Evinrude 6hp Fisherman is a two-cycle outboard motor designed to propel small boats. It operates by mixing oil with gasoline for lubrication of its pistons, cylinders, crankshaft, and bearings. The motor features a gear shift lever for forward, neutral, and reverse operation, and a speed control for adjusting throttle. It is equipped with a starter handle for manual starting and a choke knob for cold starts. The motor's design includes an anti-cavitation plate and a skeg for efficient propulsion and protection. A separate 6-gallon fuel tank supplies fuel to the motor. The cooling system, indicated by a water discharge from the exhaust relief outlet, ensures the engine operates at optimal temperatures.
The manual emphasizes ease of installation and operation. To install, the motor is centered on the boat's transom and secured with clamp screws. A safety chain link is recommended to prevent loss overboard. The motor can be tilted for shallow water operation or storage, with a tilt friction adjustment to control the ease of tilting. The Trim-Lok feature allows the motor to be locked in position for normal operation or released for tilting, especially when encountering obstructions in shallow water.
Starting the motor involves connecting the fuel hose, priming the fuel bulb until resistance is felt, ensuring the gear shift is in neutral, advancing the speed control to the start position, pulling out the choke (for cold starts), and pulling the starter handle forcibly. For warm starts, the choke is generally not needed unless the motor fails to fire after a few pulls. The manual provides instructions for shifting into forward, increasing or decreasing speed, and shifting into reverse, always stressing the importance of retarding the speed control before moving the gear shift lever.
The boat's trim is crucial for performance, with recommendations to distribute passengers and equipment for a balanced load, ensuring the anti-cavitation plate is parallel with the line of boat travel. The motor's angle adjustment rod allows for fine-tuning the motor's position relative to the transom. For remote control operation, an optional accessory, a friction block in the steering handle grip must be removed. The manual also advises on running in weedy conditions, suggesting reduced throttle and periodic reversing to clear the propeller.
Regular maintenance is key to the motor's longevity and performance. The manual provides detailed instructions for fuel and break-in procedures, recommending specific Evinrude Outboard Motor Oil at a 50:1 gasoline-to-oil ratio after the initial 5-hour break-in period (which uses a richer 1 pint of oil to 6 gallons of gasoline). It also specifies the use of regular automotive or white marine gasoline.
Carburetor adjustment for low-speed idling is described, allowing users to fine-tune the fuel mixture for smooth operation. Spark plug maintenance is covered, including removal, cleaning, regapping to .030", and reinstallation with proper torque. The manual also details how to replace the propeller, emphasizing the importance of ensuring the gear shift is in neutral to prevent accidental starting.
Lubrication is a critical aspect of maintenance, with a comprehensive chart outlining lubrication points and recommended frequencies for fresh and salt water use. It specifies "OMC Type 'A'" lubricant for various linkages and bearings, and "OMC Type 'C'" lubricant for the gearcase. Instructions for checking and refilling the gearcase lubricant are provided, highlighting the importance of using the correct type of lubricant to prevent damage.
The manual also addresses off-season storage, advising users to run the motor in fresh water until warm, inject rust preventative oil into the carburetor until the engine stops, drain the fuel tank, clean the propeller shaft, and store the motor upright in a dry, well-ventilated area. For removal from storage, it suggests cleaning spark plugs, checking for loose parts, and running the motor in water at half throttle to ensure proper water pump operation.
Finally, the manual includes guidance for dealing with submerged motors, differentiating between motors submerged while running versus stopped, and in fresh versus salt water, with strong recommendations to consult an authorized dealer for internal damage inspection and repair. It also advises against running the engine out of water to prevent overheating and water pump damage.
Engine Specifications| horsepower | 6 O.B.C Certified Brake Horsepower at 4500 RPM |
|---|---|
| full throttle operating range | 4000 to 5000 RPM |
| engine type | 2 Cylinders, 2 Cycle |
| bore and stroke | 1-15/16 inches x 1-1/2 inches |
| gear ratio | 15:26 |
| displacement | 8.84 Cubic Inches |
Cooling System| cooling system | Thermostatically Controlled By-Pass System |
|---|
Propeller| propeller | 2 Blade, 8 inches dia. x 7-1/4 inches Pitch |
|---|
Spark Plug| spark plug | Ch. J4J, AC-M42K, Auto-Lite A21X |
|---|---|
| spark plug gap | .030 inch |
| spark plug torque | 20 to 20-1/2 ft-lbs |
Fuel| fuel capacity | 6 U.S. or 5 Imperial Gallons |
|---|---|
| fuel tank weight | 11 lbs net |
Weight and Dimensions| weight | 51 lbs |
|---|---|
| length | 15 inches |
Engine Specifications| horsepower | 6 O.B.C Certified Brake Horsepower at 4500 RPM |
|---|---|
| full throttle operating range | 4000 to 5000 RPM |
| engine type | 2 Cylinders, 2 Cycle |
| bore and stroke | 1-15/16 inches x 1-1/2 inches |
| gear ratio | 15:26 |
| displacement | 8.84 Cubic Inches |
Cooling System| cooling system | Thermostatically Controlled By-Pass System |
|---|
Propeller| propeller | 2 Blade, 8 inches dia. x 7-1/4 inches Pitch |
|---|
Spark Plug| spark plug | Ch. J4J, AC-M42K, Auto-Lite A21X |
|---|---|
| spark plug gap | .030 inch |
| spark plug torque | 20 to 20-1/2 ft-lbs |
Fuel| fuel capacity | 6 U.S. or 5 Imperial Gallons |
|---|---|
| fuel tank weight | 11 lbs net |
Weight and Dimensions| weight | 52 lbs |
|---|---|
| length | 20 inches |
