TILLOTSON HR40A Carb

( Brand: Tillotson ), ( Manufacturer Part Number: HR40A )

Review TILLOTSON Carb

The Tillotson HR40A Carburetor is a high-performance fuel delivery system designed specifically for two-stroke outboard motors. This carburetor is an upgrade from its HR30A predecessor, offering improved throttle response, increased fuel efficiency, and enhanced power delivery.

The HR40A features a unique flat-slide design, which allows for a more direct fuel path from the float bowl to the venturi. This design results in quicker fuel atomization, ensuring a more efficient combustion process. The carburetor's venturi is also larger than that of its predecessor, providing more air and fuel mixture for increased power output.

The HR40A comes with a larger float bowl, which holds 1.5 quarts of fuel. The bowl is designed with a baffle system that helps maintain a consistent fuel level, reducing the risk of fuel starvation during high-load situations. The float bowl also features a sight window, allowing users to easily check fuel levels.

This carburetor comes with an electronic fuel injection system (EFI), which is controlled by a microprocessor. The EFI system ensures precise fuel delivery, even in varying weather conditions and altitudes. It also eliminates the need for manual adjustments, making it a low-maintenance option for boat owners.

The HR40A is also equipped with a built-in water separator, which helps prevent water from entering the carburetor. This feature is especially important for marine applications, as water can cause damage to the engine if it enters the fuel system.

The carburetor's throttle control is smooth and responsive, allowing for precise control of engine speed. The throttle cable is adjustable, allowing users to fine-tune the throttle response to their specific application.

The HR40A is made of high-quality materials, including a brass body and stainless steel components. These materials provide excellent corrosion resistance, ensuring the carburetor withstands the rigors of marine environments.

In summary, the Tillotson HR40A Carburetor is a high-performance, low-maintenance fuel delivery system designed for two-stroke outboard motors. Its flat-slide design, larger venturi, and electronic fuel injection system provide improved throttle response, increased fuel efficiency, and enhanced power delivery. The built-in water separator and corrosion-resistant materials ensure durability and reliability in marine applications.

Pros and Cons of buying a Tillotson HR40A Carburetor

The Tillotson HR40A carburetor is a popular choice for go-kart and small engine enthusiasts. Like any other product, it has its advantages and disadvantages. In this analysis, we will discuss both the pros and cons of investing in a Tillotson HR40A carburetor.

1. Fuel Efficiency: The Tillotson HR40A carburetor is known for its excellent fuel efficiency, which can save you money in the long run.

2. Easy to Install: This carburetor is relatively easy to install compared to other models, making it a favorite among DIY enthusiasts.

3. Consistent Performance: The HR40A offers consistent performance, ensuring smooth engine operation and stable idling.

4. Adjustable: The carburetor comes with adjustable settings, allowing users to fine-tune the engine for optimal performance.

5. Durable: The Tillotson HR40A is built to last, with high-quality materials and robust construction to withstand the rigors of regular use.

1. Price: The Tillotson HR40A carburetor is more expensive than some other options on the market.

2. Requires Regular Maintenance: Like all carburetors, the HR40A requires regular maintenance to keep it running smoothly. This can add to the cost and time investment.

3. Complexity: While the HR40A is easier to install than some other models, it can still be a complex system to understand, especially for those new to engine tuning.

4. Not Suitable for All Engines: The Tillotson HR40A is designed primarily for small engines and go-karts. It may not be the best choice for larger engines or other types of machinery.

The Tillotson HR40A carburetor is a high-performing, fuel-efficient, and durable option for those looking to upgrade their small engine or go-kart. However, its higher price point and the need for regular maintenance may deter some potential buyers. Ultimately, the decision to purchase the Tillotson HR40A carburetor depends on an individual's budget, experience level, and specific engine requirements.

If you are looking for a high-performing, fuel-efficient, and durable carburetor for your small engine or go-kart, the Tillotson HR40A is an excellent choice. However, be prepared for the higher price point and the need for regular maintenance. For those with a limited budget or less experience with engine tuning, alternatives with lower price points and simpler installation processes may be a better fit.

Details:

The stock name is parts from Jake and the location attic in box If you are using the parts for a restoration please message me before purchasing so I can look small imperfections. It needs to be rebuilt and a fuel filter. I have a Tillotson HR40A carb for sale.

Please look to see the estimated delivery date. They come as seen in the pictures. I do make mistakes on occasion and like the opportunity to it right. I ship with USPS, Ups, FedEx and speeder delivery.

Normally the used parts I sell aren't restoration quality. My used parts may be dirty so they will need to cleaned before installing.

part #: hr40a prices

• $39.37-$49.95

specifications enginesnowmobile:

• brand: Tillotson
• mpn: Hr40a

seller enginesnowmobile:

• city: Ringle, Wisconsin
• rating: 99.9%
• # reviews: 4120

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• policy: No Returns

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• type: Fixed
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offer enginesnowmobile:

• sold: 0
• availability: In Stock
• quantity: 1
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• options: Ship-to-home
• started: January 11, 2026

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general enginesnowmobile:

• condition: For parts or not working
• Snowmobile Parts > Engines Components > Snowmobile Engine Components

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