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20HP
PREMARINE
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The PREMARINE (20 HP 4-Stroke) is a portable outboard engine widely used for small fishing boats, skiffs, tenders, and inflatables.
Feature | Specification |
Engine Type | Inline 2-Cylinder, 4-Stroke SOHC |
Displacement | 432 cc (26.4 cu. in.) |
Fuel Induction | Battery-less Electronic Fuel Injection (EFI) |
Bore x Stroke | 65.0 mm x 65.1 mm |
Full Throttle RPM Range | 5,000 – 6,000 RPM |
Dry Weight | ~126–137 lbs (57–62 kg) depending on shaft length & configuration |
Starting System | Manual (pull), Electric, or combination |
Control Options | Tiller handle or Remote Control |
Alternator Output | 16 Amp |
Fuel Tank Capacity | 25-Liter (6.6 Gallon) external tank |
Battery-Less EFI: Starts easily in cold weather and at high altitudes without requiring a battery for manual-start models.
Lightweight Architecture: Uses a single-piece top cowling and compact structure for improved portability.
Resting Pads & Folding Handle: Designed with built-in side/back resting pads and an ergonomic carry handle for horizontal storage and transport.
Shallow Water Drive: Multiple trim positions allow safe navigation through shallow waters.
Freshwater Flush Port: Allows flushing salt and debris out of the cooling channels using a simple garden hose without running the engine.
The 432cc Yamaha F20 / F25 platform serves as the base architecture for numerous domestic and international aftermarket brands:
PREMARINE Compatibility: PREMARINE manufactures aftermarket replacement parts directly cross-compatible with Yamaha 20HP 4-stroke OEM part numbers. Key PREMARINE replacement components include:
Water pump repair kits & impellers
Propeller shafts and lower unit gear sets (2.08:1 ratio)
Carburetor / Fuel system service components
Ignition coils and C.D.I. units
Thermostats, oil filters, and lower unit seal kits
