OMC Throttle Cam 0313676 5/6

( Brand: Omc ), ( Manufacturer Part Number: 313676 ), ( Part Type: Hp Throttle Cam ), ( Country Of Origin: United States )

Review OMC Throttle Cam Evinrude Johnson 5-6 Hp fits 1968–1976

The **OMC 313676 / 0313676 Throttle and Cam Kit** is a meticulously crafted aftermarket upgrade designed specifically for **Evinrude Johnson 5-6 HP outboard motors** manufactured between **1968 and 1976**. This kit represents a rare and highly sought-after solution for restoring or enhancing the performance of these classic, small-block Evinrude engines, which were beloved for their simplicity, durability, and smooth operation in everything from small fishing boats to personal watercraft. The **throttle and cam kit** is engineered to replace the stock components, offering improved throttle response, better fuel efficiency, and a more refined power delivery qualities that were often compromised over time due to wear, corrosion, or standard wear-and-tear. The throttle body in this kit is precision-machined to ensure a snug, leak-free fit, eliminating the common issues of vacuum loss or erratic throttle behavior that plagued older models. Meanwhile, the camshaft is a carefully balanced, high-quality replacement designed to optimize valve timing, allowing for better airflow and combustion efficiency, which translates to a more consistent and responsive engine. Whether you're looking to revive a vintage motor for historical accuracy, improve its reliability for daily use, or simply restore its original performance characteristics, this kit provides the essential components to achieve those goals. Built to exacting standards, the **OMC 313676 / 0313676** kit is a testament to the enduring legacy of Evinrude Johnson engineering, offering a blend of nostalgia and modern functionality for enthusiasts who appreciate both the charm and capability of these mid-century outboards.

### **Pros and Cons of Buying a 1968-1976 OMC 313676 (Evinrude Johnson 5-6 HP Throttle Cam)**

#### **Pros**

1. **Classic and Nostalgic Appeal** This engine is from a well-known era of small, two-stroke outboard motors, prized by collectors and enthusiasts for its vintage design. It holds historical value for those who appreciate early marine power.

2. **Simple and Reliable (For Its Time)** The 5-6 HP throttle cam engine was designed for small boats, fishing skiffs, and dinghies. While not built for modern performance, it was durable for its intended use, especially if well-maintained.

3. **Easy to Find Parts (If Available)** Since these engines were widely used in the late 1960s and early 1970s, some basic parts (like spark plugs, carburetor components, and belts) may still be obtainable from salvage yards, marine shops, or online marketplaces.

4. **Low Cost of Acquisition** Due to age and lack of modern demand, these engines are often sold at a very low price, making them an attractive option for budget-conscious buyers.

5. **Potential for Restoration** If you enjoy mechanical work, restoring one could be a rewarding project. Many enthusiasts enjoy bringing vintage engines back to running condition.

6. **Lightweight and Compact** The small size makes it suitable for very small boats, kayaks, or even as a novelty engine for educational purposes.

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#### **Cons**

1. **Extremely Outdated Technology** This engine uses a two-stroke design, which is highly inefficient by modern standards. It lacks modern emissions controls, fuel injection, and electronic ignition, making it far less reliable and polluting than today s outboards.

2. **Poor Fuel Efficiency** Two-stroke engines mix oil with gasoline, leading to excessive oil consumption and poor mileage. Expect to burn through fuel quickly, especially if the engine is not properly tuned.

3. **High Maintenance Requirements** The lack of modern seals, bearings, and corrosion-resistant materials means the engine is prone to wear, leaks, and rust. Regular disassembly and overhauls are likely necessary.

4. **Limited Power and Performance** At just 5-6 HP, this engine is barely adequate for small boats in calm conditions. It struggles with waves, wind resistance, or any significant load, making it impractical for serious boating.

5. **Difficulty Finding Trained Mechanics** Most marine mechanics today specialize in modern outboards (Evinrude, Mercury, Yamaha) and may not have experience working on these older models. Troubleshooting issues could be challenging.

6. **Environmental Concerns** Two-stroke engines are notorious for producing excessive hydrocarbons and oil in the water, making them environmentally harmful. Many marinas and lakes have banned or restricted them.

7. **Reliability Issues** The throttle cam system (a precursor to modern carburetion) is prone to clogging, leaks, and failure. The engine may stall frequently, especially if not properly maintained.

8. **No Modern Safety Features** Unlike today s outboards, this engine lacks features like kill switches, remote start, or even reliable ignition systems, increasing the risk of accidents.

9. **Limited Resale Value** Even in good condition, these engines have no real market value beyond sentimental or collector s interest. They are not a sound investment.

10. **Potential for Hidden Damage** Due to age, the engine may have internal corrosion, cracked casings, or worn-out components that are difficult to detect without a full teardown.

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### **Conclusion**

The OMC 313676 (Evinrude Johnson 5-6 HP throttle cam) from 1968-1976 is a fascinating piece of marine history, but it is **not a practical choice for modern boating**. Its outdated design, poor efficiency, high maintenance needs, and environmental drawbacks make it unsuitable for serious use. However, if you are a collector, a hobbyist looking for a restoration project, or someone who simply enjoys the nostalgia of vintage engines, it could be a fun (if challenging) addition to your collection.

For anyone seeking a **functional, reliable, and efficient** outboard motor, modern alternatives (even small 2-5 HP electric or modern two-stroke/diesel hybrids) are far superior in performance, safety, and longevity.

### **Recommendation**

- **Buy only if:** You are a collector, a mechanical enthusiast, or someone who enjoys restoring vintage machinery for personal satisfaction.

- **Do not buy if:** You need a practical, reliable engine for regular boating, fishing, or any application where performance and efficiency matter.

- **Alternative options:** Consider a modern small outboard (e.g., a 2-5 HP electric motor, a Yamaha 3.5 HP, or a used but well-maintained 10-15 HP two-stroke/diesel hybrid) for actual use. If you must have a vintage engine, ensure you have the time, skills, and resources to properly maintain it.

Details:

Fits many Johnson Evinrude 5HP and 6HP model's as Follows: 5802B 1968, 5802E 1968 5802M 5803B 5803E 5803M 6002B 1970 6003B 6102E 1971 6102G 6103E 6103G 6202D 1972 6203D 6302S 1973 6303S 6402C 1974 6403C 6504R 1975 6505R 6604A 1976 6605A 6802A. Location: 28 A1. Fits Johnson / Evinrude 5/6 HP Years: 1968 1976. Clean cam profile no rounding or stripping Mount points intact Smooth follower contact surface Slight wear but original is intact.

USED Genuine OEM OMC throttle control cam, part number 313676 also shown as 0313676. Good working OEM cam removed from a freshwater outboard.

part #: 313676 prices

• $29.95-$45.00

specifications ouboaen:

• for makes: Evinrude, Johnson, Omc
• for years: 1968-1976
• brand: Omc
• mpn: 313676
• part type: Hp Throttle Cam
• country of origin: United States

returns ouboaen:

• policy: Returns Accepted
• paid by: Seller
• time: 30 Days

seller ouboaen:

• # reviews: 3557
• rating: 99.5%
• city: Wallingford, Kentucky

general ouboaen:

• condition: Used
• Boat Parts > Outboard Engines Components > Other

payments ouboaen:

• wallet: Paypal
• credit card: Discover
• other

offer ouboaen:

• sold: 0
• options: Ship-to-home
• started: April 16, 2026
• availability: In Stock
• quantity: 1

shipping ouboaen:

• cost: $3.00
• carrier: USPS
• transit: 4-9 Days
• class: Standard
• type: Fixed
• service: USPS Ground Advantage

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