Gale Model 35D11 Outboard Motor Specs & Overview

Overview of Gale Outboard Motors

Gale Products, a division of Outboard Marine Corporation (OMC), produced reliable and budget-friendly outboard motors throughout the mid-20th century. Sharing core powerhead architecture and engineering principles with sister brands Johnson and Evinrude, Gale outboards—such as the 35D11—were sold directly or rebadged for major department stores under brand names like Sea King and Buccaneer. Known for their rugged construction, simplicity, and workhorse power delivery, these mid-power twins remain popular projects for vintage outboard collectors and boating enthusiasts.

Technical Specifications: Gale 35D11

The Gale 35D11 is a 35 HP twin-cylinder outboard engineered for mid-sized runabouts, utility boats, and family cruisers. Key specifications from the factory manual include:

• Model: Gale 35D11 / 35D12
• Horsepower Rating: 35.0 HP @ 4,500 RPM (OBC Certified)
• Recommended Operating Range: 4,000 – 5,000 RPM
• Cylinders: 2-cylinder, 2-port, alternate firing
• Displacement: 40.5 cubic inches
• Bore & Stroke: 3-1/16″ x 2-3/4″
• Ignition System: Built-in flywheel magneto
• Carburetor: Concentric float type with adjustable fast/slow speed needle valves and automotive-style choke
• Cooling System: Positive displacement and centrifugal synthetic rubber rotor pump
• Gearshift Control: Full gearshift (Forward – Neutral – Reverse)
• Gear Ratio: 12:21
• Propeller: 3-blade, 10-3/8″ diameter x 13-1/4″ pitch
• Fuel Tank Capacity: 6-gallon remote pressurized/pump tank
• Estimated Running Time: Approx. 1-1/2 to 1-3/4 hours at full throttle
• Motor Weight: 123 lbs. (less fuel tank)
• Transom Height: 15″ (Standard short shaft)

Fuel-to-Oil Mix Recommendations

Because vintage OMC and Gale motors from this era rely on internal bushings and early needle bearings, proper lubrication is essential to prevent engine failure. The recommended 2-stroke fuel mixture for the Gale 35D11 is 24:1 (1 quart of quality TC-W3 marine 2-stroke oil to 6 gallons of gasoline).

Whenever possible, run 87+ octane ethanol-free gasoline. Ethanol absorbs moisture, degrades vintage fuel lines, and damages soft rubber components inside the fuel pump and carburetor.

Restoration & Maintenance Advice

Restoring a Gale 35 HP outboard is a rewarding project due to the wide availability of cross-compatible OMC parts. Follow these essential tips when servicing your engine:

• Ignition Refresh: Original OMC/Gale flywheel magnetos often suffer from cracked ignition coils due to age. Inspect the coils under the flywheel and replace them along with new points (gapped to 0.020″) and fresh spark plugs for strong, consistent spark.
• Cooling System: Never run the engine without replacing the synthetic rubber water pump impeller. If the motor has sat idle for years, the rubber rotor hardens or disintegrates, leading to sudden overheating and severe powerhead damage.
• Carburetor Rebuild: Soak the carburetor body to clear varnish from internal passages. Rebuild it using fresh gaskets and set both the high-speed and low-speed needle valves to initial rich baseline settings before fine-tuning the mixture on the water under load.
• Gearcase Maintenance: Drain the lower unit oil and inspect for metal shavings or milky liquid, which indicates water intrusion. Replace the propeller shaft and shift shaft seals as needed, and refill the lower unit with modern marine gear lube.