1. Boat Outboard Engines To Buy
  2. sku: 24113642776543813
  3. MARINER 138-784M

MARINER 138-784M Outboard Teikei Carburetor Electric Choke 30HP

138-784m Mariner 30hp 2 Cyl Outboard Teikei Carburetor W / Electric Choke

( Brand: Mariner ), ( Manufacturer Part Number: 138-784M ), ( Part Type: Carburetor )

Review MARINER 30hp Cyl Outboard Teikei Carburetor Electric Choke

The **Mariner 138-784M 30HP Outboard Motor** with a **Teikei Carburetor and Electric Choke** is a finely engineered marine powerhouse designed to deliver reliable performance, fuel efficiency, and effortless starting in a wide range of boating applications. Engineered by Mercury Marine, a leader in outboard motor innovation, this compact yet robust 30 horsepower four-stroke engine combines cutting-edge technology with durable construction to provide smooth, low-vibration power ideal for everything from small fishing boats and personal watercraft to utility vessels and recreational skiffs. The **Teikei carburetor**, renowned for its precision and reliability, ensures optimal fuel delivery, enhancing throttle response and fuel economy while minimizing emissions. Its advanced design features a **self-adjusting throttle mechanism** that maintains consistent performance across varying loads, making it perfect for both casual weekend anglers and serious boaters who demand dependability. The **electric choke system** eliminates the hassle of manual choke adjustments, allowing for quick, one-touch engagement to ensure smooth cold starts in cooler temperatures, while the automatic choke disengages once the engine warms up, promoting efficient operation. This outboard is equipped with a **direct-drive, single-cylinder, four-stroke engine** that delivers clean, quiet power with minimal maintenance requirements compared to traditional two-stroke outboards, making it an eco-friendly choice without sacrificing performance. The **Mariner 138 series** is built with a **cast-aluminum lower unit** that resists corrosion and withstands the rigors of saltwater exposure, while the **integrated trim and tilt system** allows for easy handling and maneuverability, whether you're docking, fishing, or cruising. With a **lightweight yet sturdy design**, this engine is easily installed on boats ranging from 12 to 18 feet, making it a versatile addition to any marine setup. Whether you're trolling for bass, cruising along a scenic coastline, or running errands on a utility boat, the **Mariner 138-784M** delivers a perfect balance of power, efficiency, and ease of use, ensuring a seamless boating experience with every outing.

### **Pros and Cons of Buying a Mariner 138-784M 30HP Outboard with Teikei Carburetor and Electric Choke**

#### **Pros**

1. **Reliability and Durability** The Mariner 138 series is known for its robust construction and long-lasting performance, making it suitable for frequent use in recreational and fishing applications.

2. **Electric Choke** The electric choke feature simplifies cold-starting, especially in colder climates, as it eliminates the need for manual choke adjustments, improving convenience.

3. **Teikei Carburetor** The Teikei carburetor is a high-quality aftermarket option that often improves fuel efficiency, throttle response, and overall engine performance compared to stock units.

4. **Lower Maintenance Costs (Compared to Stock)** A well-maintained Teikei carburetor can reduce fuel consumption and wear on internal components, potentially lowering long-term maintenance expenses.

5. **Good for Small Boats** The 30HP engine is well-suited for small to mid-sized boats, such as jon boats, dinghies, or small fishing vessels, where power is adequate without being excessive.

6. **Easier to Modify and Upgrade** The Mariner 138 series allows for relatively straightforward modifications, including carburetor upgrades, which can enhance performance for specific applications.

7. **Affordable Replacement Parts** Since the Mariner 138 is an older but widely used engine, replacement parts (including Teikei carburetor components) are generally accessible and cost-effective.

8. **Good for Beginners** The simplicity of the engine design makes it easier for novice boat owners to maintain and troubleshoot compared to more complex modern outboards.

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#### **Cons**

1. **Age and Wear** The Mariner 138 series is an older model (discontinued around the 1990s), meaning it may have higher wear rates on critical components like the lower unit, piston rings, and seals over time.

2. **Fuel Efficiency Concerns** While the Teikei carburetor may improve performance, older outboards generally have lower fuel efficiency compared to modern engines, leading to higher operating costs.

3. **Emissions and Environmental Regulations** Older outboards may not meet current emissions standards in some regions, potentially requiring modifications or limiting where the boat can be used.

4. **Limited Warranty Coverage** Since the engine is no longer in production, finding a manufacturer warranty for new parts is difficult, and repairs may rely on aftermarket or third-party services.

5. **Higher Maintenance Frequency** Older engines require more frequent maintenance, such as oil changes, spark plug replacements, and carburetor adjustments, to prevent breakdowns.

6. **Potential for Hidden Issues** Used engines of this age may have undetected problems like cracked cylinder heads, worn crankshafts, or fuel system leaks, which could lead to costly repairs.

7. **Resale Value** Unlike newer outboards, the Mariner 138 has little to no resale value, making it a less attractive long-term investment if you plan to upgrade later.

8. **Limited Performance for Heavy Loads** While sufficient for small boats, the 30HP engine may struggle with heavy loads (e.g., large fishing gear, towing, or rough water conditions), requiring careful operation.

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### **Conclusion**

The **Mariner 138-784M 30HP with a Teikei carburetor and electric choke** is a solid choice for budget-conscious boat owners who prioritize reliability, ease of use, and modifiability for small to mid-sized vessels. The electric choke and Teikei carburetor upgrades enhance usability and performance, making it a practical option for recreational boating, fishing, or light duty. However, its age means it will require more maintenance, has lower fuel efficiency, and may not meet modern emissions standards. If you re looking for a **low-cost, easy-to-maintain engine for simple applications**, this is a viable option. If you need **higher performance, better fuel economy, or long-term reliability**, investing in a newer outboard (such as a Yamaha, Evinrude, or Mercury) would be a better long-term solution.

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### **Recommendation**

**Buy if:**

- You need a **budget-friendly, reliable engine** for small boats (under 12 feet).

- You re comfortable with **regular maintenance** and minor modifications.

- You prefer **electric choke convenience** and the performance benefits of a Teikei carburetor.

- You don t plan to use the boat in **heavy loads or rough conditions** where a more powerful engine is needed.

**Avoid if:**

- You want **modern fuel efficiency, emissions compliance, or lower long-term costs**.

- You re looking for **high performance, towing capability, or extended warranty support**.

- You plan to **keep the boat for more than 5 7 years**, as newer engines will be more cost-effective.

- You lack experience with **older outboard maintenance**, as repairs can become costly over time.

**Alternative Considerations:**

- If you want **better fuel efficiency and reliability**, consider a **used 2000s-era Yamaha 30HP or Evinrude E-TEC 30HP** (if emissions-compliant).

- If you need **easier maintenance**, a **Mercury 40HP or Honda BF100** (if within budget) offers better longevity.

- If you re **modifying for performance**, ensure the Teikei carburetor is properly installed and tuned to avoid fuel system issues.

Ultimately, this engine is a **good short-to-medium-term solution for light-duty boating** but may not be the best long-term investment compared to newer alternatives.

Details:

Carb off a 1980Mariner 30 hp with electric choke, looks good but don't have motor to try it on so selling for parts.

part #: 138784m price

  • $149.95

specifications ouboaen:

  • brand: Mariner
  • mpn: 138-784m
  • part type: Carburetor

returns ouboaen:

  • policy: No Returns

payments ouboaen:

  • wallet: Apple-pay
  • other
  • credit card: Visa
  • money order

shipping ouboaen:

  • transit: 6-13 Days
  • cost: $12.32
  • service: USPS Ground Advantage
  • class: Standard
  • type: Calculated
  • carrier: USPS

seller ouboaen:

  • # reviews: 179
  • city: New Milford, New Jersey
  • rating: 100.0%

offer ouboaen:

  • quantity: 1
  • options: Ship-to-home
  • started: May 22, 2026
  • sold: 0
  • availability: In Stock

general ouboaen:

  • condition: For parts or not working
  • Boat Parts > Outboard Engines Components > Other
part type: carburetor,
category: boat parts > outboard engines components, sku: 24113642776543813,
Mariner 138-784M Is Similar To:
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1 offer $149.95 USD
  • For parts or not working. Offer #1 priced at $149.95 + $12.32 shipping estimate = $162.27* total. Carb off a 1980s Mariner 30 hp with electric choke, looks good but don t have motor to try it on so selling for parts.+$12.32 shipping

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