Gale Model 25DE19 Outboard Motor Specs & Overview

Overview of Gale Outboard Motors

Gale Products, a division of the Outboard Marine Corporation (OMC), manufactured dependable and affordable outboard motors from the late 1930s through the mid-1960s. Sold under the Gale name as well as department store house brands like Montgomery Ward’s Sea King and Spiegel’s Brooklure, these motors shared much of their heavy-duty mechanical engineering with their OMC siblings, Johnson and Evinrude. The Gale Model 25DE19 is a classic mid-1950s 25 horsepower workhorse, delivering robust twin-cylinder power, electric starting capability, and full forward-neutral-reverse gearshifting for mid-sized vintage runabouts and utility boats.

Key Technical Specifications

• Model: Gale 25DE19
• Horsepower: 25.0 HP @ 4,500 RPM (O.B.C. Certified)
• Full Throttle Operating Range: 4,000 – 5,000 RPM
• Cylinders: 2-cylinder, 2-port, alternate firing 2-stroke
• Bore & Stroke: 2-7/8″ bore x 2-3/4″ stroke
• Displacement: 35.7 cubic inches
• Starting System: Electric starter with automatic rewind manual backup
• Gearshift: Full Forward-Neutral-Reverse (F-N-R)
• Gear Ratio: 12:21
• Weight: 126 lbs. (excluding fuel tank)
• Cooling System: Rubber blade combination displacement and centrifugal water pump
• Ignition System: Flywheel magneto
• Carburetor: Float feed with adjustable high and low-speed needle valves
• Control System: Twist-grip throttle synchronized with spark advance
• Propeller: 3-blade, 10-3/8″ diameter x 12-1/2″ pitch
• Fuel Tank Capacity: 6 gallons (remote tank)
• Transom Height: Accommodates 15″ or 20″ transoms

Fuel Mix & Oil Recommendations

As a 1950s OMC-built two-stroke powerhead with bushing and needle bearings, the Gale 25 HP engine requires a **24:1 fuel-to-oil mixture** (1 quart of high-quality marine oil per 6 gallons of gasoline). Use **TC-W3 certified two-stroke outboard oil** combined with fresh, ethanol-free gasoline whenever possible. Ethanol in modern fuels can deteriorate vintage rubber fuel lines, fuel pump diaphragms, and original carb gaskets.

Maintenance & Restoration Tips

Restoring or maintaining a Gale 25DE19 is straightforward thanks to the high availability of interchangeable OMC parts. Key areas to address during servicing include:

• Cooling System: Never run the engine out of water. Replace the rubber water pump impeller inside the lower unit before putting a long-stored motor back into service, as dry rubber blades crack easily and cause overheating.
• Ignition Tune-Up: The flywheel magneto uses classic OMC universal ignition components. Inspect the ignition coils for cracking in the outer coating. Replace cracked coils, breaker points, and condensers with modern reproduction OMC parts for reliable starting.
• Carburetor Service: Rebuild the float-feed carburetor with new packing seals on the high and low-speed adjustment needles. If the original carb features a shellac-coated cork float, replace it with a modern fuel-resistant float.
• Lower Unit Lubrication: Drain the lower unit oil to check for water intrusion (milky appearance). Re-seal the gearcase if necessary and refill it with fresh marine gear lube (Type C or standard 80W-90 marine lower unit grease).