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40HP
PREMARINE
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The PREMARINE (40 HP 4-Stroke) is a mid-range outboard motor designed for aluminum fishing boats, pontoon boats, light skiffs, and small utility craft.
Feature | Specification |
Engine Type | Inline 3-Cylinder, 4-Stroke SOHC |
Displacement | 747 cc (45.6 cu. in.) |
Fuel Induction | Electronic Fuel Injection (EFI) |
Bore x Stroke | 65.0 mm x 75.0 mm |
Full Throttle RPM Range | 5,000 – 6,000 RPM |
Dry Weight | ~214–223 lbs (97–101 kg) depending on shaft length |
Starting System | Electric Start |
Gear Ratio | 2.00:1 |
Alternator Output | 17 Amp |
Control Options | Multi-Function Tiller Handle or Remote Control |
Multi-Point Electronic Fuel Injection (EFI): Delivers precise fuel delivery for quick starts, efficient fuel consumption, and smooth acceleration across all RPM ranges.
Variable Trolling RPM Switch (VTS): Allows fine-tuning of trolling speed in 50 RPM increments (from 620 to 900 RPM) via the tiller handle or gauge.
Y-COP® Immobilizer Compatibility: Supports Yamaha's customer-outboard protection system to prevent unauthorized engine operation.
Lightweight 3-Cylinder Layout: Offers a strong power-to-weight ratio compared to older 4-cylinder or 2-stroke platforms in the same horsepower class.
Power Trim & Tilt: Built-in hydraulic trim system for on-the-fly tilt adjustments and shallow-water operation.
The Yamaha 747cc F40 platform serves as a standard engineering blueprint across international aftermarket manufacturers:
PREMARINE Compatibility: PREMARINE offers replacement parts engineered to match Yamaha 40HP 4-stroke OEM specifications. Key PREMARINE replacement categories include:
Lower unit gear sets, pinion gears, and propeller shafts
Water pump overhaul kits, housings, and impellers
Power trim & tilt seal kits and motor assemblies
Fuel injection filters, high-pressure fuel pumps, and sensors
Ignition coils, starter motors, and electrical relays
