1962 Evinrude 10 HP Sportwin Outboard Specs & Part Numbers
Overview & Specifications
The 1962 Evinrude 10 HP Sportwin (Model 10224 / 10225) represents the pinnacle of early 1960s marine engineering from the Outboard Marine Corporation (OMC). Renowned for its reliability, smooth idling, and robust low-end torque, this twin-cylinder, two-stroke outboard remains a favorite among vintage marine enthusiasts and collectors today. It is an ideal powerplant for small fishing boats, utility skiffs, and classic wooden runabouts.
Below are the foundational specifications for the 1962 Evinrude 10 HP Sportwin:
| Specification | Value / Measurement |
|---|---|
| Horsepower | 10 HP @ 4500 RPM |
| Configuration | 2-Cylinder, Alternate Firing Two-Stroke |
| Displacement | 15.0 cubic inches (245.8 cc) |
| Bore x Stroke | 2.375 in x 1.700 in (60.3 mm x 43.2 mm) |
| Fuel/Oil Ratio | 24:1 (Regular unleaded gasoline to TC-W3 marine 2-cycle oil) |
| Fuel System | Single-line fuel pump system (pulse-driven) with remote fuel tank |
| Dry Weight | Approximately 66 lbs (29.9 kg) |
| Starter Type | Manual Recoil (Pull Start) |
Crucial Technical Note on Fuel Ratio: Modern oils are highly efficient, but because this engine utilizes bronze bushing-type bearings rather than needle bearings in some mechanical locations, it must be run at 24:1. Do not run this engine at 50:1, as doing so will cause premature wear and internal engine damage over time.
Common Maintenance & Tune-up Specs
Keeping a 1962 Sportwin running smoothly requires regular inspection of the ignition, fuel, and cooling systems. Thanks to its straightforward layout, it is highly serviceable with basic hand tools.
Ignition System Specs (OMC Universal Magneto)
The 1962 Sportwin features the highly reliable OMC Universal Magneto system, housed underneath the flywheel. It utilizes dual sets of points and dual ignition coils.
- Spark Plugs: Champion J4C or J6C (historically J4J or J6J). Use J6C if you experience fouling during extended low-speed trolling.
- Spark Plug Gap: 0.030 inches (0.76 mm)
- Breaker Point Gap: 0.020 inches (0.51 mm) at high point of the cam lobe.
- Ignition Coils: Dual coils under the flywheel. Inspect for cracks in the plastic housings, which are common with age and cause spark arcing/misfires.
Carburetor & Fuel Settings
The carburetor features two adjustable brass needles on the front control panel: the Low-Speed (Idle) needle and the High-Speed (High-Speed Jet) needle.
- Initial Low-Speed Needle Setting: Turn gently clockwise until seated, then back out counter-clockwise 1.5 turns.
- Initial High-Speed Needle Setting: Turn gently clockwise until seated, then back out counter-clockwise 1.0 turn.
- Note: Fine-tune both needles on the water under load while the engine is warm. Adjust in 1/8-turn increments.
Water Pump & Lower Unit Gearcase
Overheating is the leading cause of powerhead failure. The water pump impeller should be changed every 2 to 3 seasons.
- Impeller Part Number: OEM #277123 / Sierra #18-3002
- Lower Unit Lubricant: OMC Premium Blend HiVis or any high-quality marine 80W-90 Gear Lube.
- Gearcase Capacity: Approximately 8.5 oz. Fill from the bottom drain hole until fluid exits the top vent hole to ensure no air bubbles are trapped.
Notable Features & History
The 1962 Sportwin 10 HP holds a special place in outboard motor history as one of OMC’s most successful “everyman” motors. It represents the sweet spot of portability and power during the postwar American boating boom.
The “Sportwin” Philosophy
The name “Sportwin” was applied to several mid-range Evinrude outboards over the decades, but the early 1960s 10 HP iteration is fondly remembered for its exceptionally balanced design. It was large enough to get a 12-to-14-foot aluminum utility boat up on a plane, yet light and compact enough to be transported in the trunk of a family sedan.
Shift to the Single-Line Fuel System
Earlier OMC outboards of the 1950s utilized a pressurized, dual-line fuel system that required a specialized gas tank to push fuel up to the engine. By 1962, the Sportwin was equipped with a modern, vacuum-pulse fuel pump. This transition allowed users to run standard, modern single-line portable fuel tanks, greatly increasing the safety and convenience of refueling.
Design & Styling Highlights
- Classic Two-Piece Cowling: The 1962 model features a sleek, two-toned fiberglass cowl (typically a combination of Evinrude blue and white) with brightwork accents. The cowl split in half vertically, held together by latching clasps, allowing quick access to the spark plugs and carburetor adjustments.
- Super-Quiet Operation: Evinrude marketed this motor heavily on its “whispering” qualities. The powerhead is suspended on rubber mountings inside an outer lower shell, significantly reducing vibration and harsh exhaust notes transferred to the boat hull.
- Full Gearshift Capability: Unlike some earlier small outboards that required pivoting the entire engine 180 degrees to reverse, the Sportwin features a full mechanical shift mechanism offering Forward, Neutral, and Reverse (F-N-R) control.
For modern DIY mechanics, the 1962 Evinrude 10 HP Sportwin is widely regarded as one of the best vintage outboards to restore. Part availability remains excellent, and its mechanical simplicity ensures that with basic maintenance, this classic motor can continue to reliably power boats for decades to come.