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General| Engine Model | 20B TWO / 30B THREE |
|---|---|
| Engine Type | Diesel |
| Cylinders | 2 (20B TWO) / 3 (30B THREE) |
| Max Output | 20HP (20B TWO), 30HP (30B THREE) |
| Cooling System | Fresh water cooled, heat exchanger |
| Lubrication System | Forced lubrication |
| Starting System | Electric |
| Alternator Output | 55A |
Instructions to prevent injury from electrical hazards, including grounding and insulation precautions.
Guidelines to avoid burns from hot engine parts, exhaust systems, fire, and explosions.
Information on the dangers of carbon monoxide and proper ventilation for exhaust systems.
Steps for preparing the engine before initial starting, including fluid checks and system priming.
Description of the Captain and Admiral control panels, including their functions and indicators.
Information on diesel fuel requirements, fuel filter/water separators, and fuel system maintenance.
Details on the 12-Volt DC control circuit, battery specifications, alternator testing, and wiring diagrams.
Explanation of fresh water and sea water cooling circuits, coolant mixture, and component functions.
Guidance on engine oil selection, viscosity, oil pressure, and the engine oil change procedure.
Diagnostic tables for common engine problems, their probable causes, and recommended solutions.
Scheduled preventive maintenance program and adjustment procedures for owner/operators.
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