Gale Model 22DE15 Outboard Motor Specs & Overview

Gale Model 22DE15 Outboard Motor Overview

The Gale Model 22DE15 is a dependable 25-horsepower outboard motor produced by Gale Products, a former division of the Outboard Marine Corporation (OMC). During the mid-20th century, Gale manufactured motors both under its own name and for major department stores (such as Montgomery Ward’s Sea King and Goodyear’s Sea Bee line). Built on OMC’s proven 35.7 cubic-inch twin-cylinder platform, the 22DE15 offers solid mid-range performance, excellent reliability, and mechanical similarity to contemporary Johnson and Evinrude 25 HP models.

Key Technical Specifications

• Model: Gale 22DE15
• Horsepower: 25.0 HP @ 4,500 RPM (O.B.C. Certified)
• Operating RPM Range: 4,000 – 5,000 RPM
• Cylinders: 2 (Alternate Firing)
• Bore & Stroke: 2-7/8″ Bore x 2-3/4″ Stroke
• Displacement: 35.7 Cubic Inches
• Powerhead Type: 2-Cycle, 2-Port
• Starter: Electric Starting with Automatic Rewind Back-up
• Gearshift Control: Forward – Neutral – Reverse (FNR)
• Gear Ratio: 12:21
• Ignition System: Built-in Flywheel Magneto
• Carburetor: Float Feed with Adjustable High and Low-Speed Needles
• Speed Control: Twist Grip (Synchronized Spark and Throttle)
• Cooling System: Combination Displacement & Centrifugal Water Pump (Rubber Impeller)
• Propeller: 3-Blade, 10-3/8″ Diameter x 12-1/2″ Pitch
• Fuel Capacity: 6-Gallon Remote Tank
• Recommended Transom Height: 15 Inches (Standard Short Shaft)
• Weight: 130 lbs (without fuel tank)

Maintenance & Restoration Advice

Restoring and maintaining a Gale 22DE15 is relatively simple due to its shared ancestry with OMC’s mainstream lines. High parts availability makes this model a favorite among vintage outboard collectors.

1. Ignition System Tuning:
The flywheel magneto system uses standard OMC-style ignition components. Original coils from this era frequently crack due to age and moisture exposure. Before starting a long-dormant engine, remove the flywheel to inspect the coils, contact points, and condensers. Set point gaps to .020 inches and replace cracked coils with modern encapsulated replacements.

2. Fuel System & 2-Stroke Mix Ratio:
The float-feed carburetor features dual adjustable needle valves (high-speed and low-speed). Rebuild the carburetor using fuel-resistant materials to handle modern fuels, and clean out any old varnish from the passages.

Fuel Mixture Recommendation: Because OMC’s 35.7 cubic inch powerheads from this era utilize internal bronze wrist-pin bushings, run a 24:1 fuel-to-oil mix ratio (1 quart of high-quality TC-W3 marine two-stroke oil per 6 gallons of regular non-ethanol gasoline). Do not run a modern 50:1 mix on this motor, as reduced oiling can lead to severe wrist pin and bearing wear.

3. Cooling System Service:
The cooling system relies on a combination rubber impeller water pump. Never start the motor dry. Always replace the water pump impeller before putting a revived motor into service; hardened or disintegrating rubber blades can block cooling passages and cause rapid overheating.

4. Lower Unit & Gearcase:
Check the lower unit oil prior to operation. Drain old fluid and inspect for water contamination (milky appearance) or metal shavings. Replace the drain/fill plug washers and refill with fresh marine gear lube from the bottom plug upward until fluid overflows from the top vent plug.