fits model: 340, 440. make: Arctic, Arctic-cat.

( Brand: Tillotsen ), ( Manufacturer Part Number: HD30A ), ( Part Type: Carburetor )
The Tillotson HD30A Carburetor is an exceptional fuel delivery system engineered for a wide range of applications, making it an ideal choice for those operating Arctic Cat 340, 440, Deere, and Massey engines. This carburetor boasts reliable performance and impressive efficiency, ensuring a smooth operation of your engine in various environments and conditions. The HD30A design combines advanced engineering with robust construction to provide long-lasting and durable use.
Paragraph 2:Developed with advanced technology, the Tillotson HD30A Carburetor features a diaphragm-type fuel pump and an automatic choke mechanism. The diaphragm fuel pump efficiently and consistently delivers fuel under pressure to the carburetor, allowing instant engine starting and smooth idling. The automatic choke mechanism automatically engages the choke when the engine is started, ensuring easy starting in cold weather.
Paragraph 3:This carburetor comes with a meticulously designed flooding bowl that offers quick engine warm-up while maintaining proper fuel delivery. The bowl's capacity provides an optimal air/fuel mixture that adapts to different altitude and temperature conditions. Moreover, it has a replaceable needle and seat jet to help maintain optimal engine performance over time.
Paragraph 4:The Tillotson HD30A Carburetor's adjustable needle jet and idle mixture screws allow for fine-tuning of the engine's idle speed and mixture, enabling an ideal balance between power and efficiency. Additionally, it comes equipped with an adjustable throttle cable tensioner that ensures proper throttle response and accurate control of the engine speed.
Paragraph 5:Constructed using high-quality materials and features robust design, the HD30A carburetor is built to withstand harsh off-road conditions, rough handling, and the effects of extended exposure to various weather elements. This durability, combined with its ease of installation and excellent performance, makes the Tillotson HD30A Carburetor a highly sought-after fuel delivery system by engine owners in diverse industries, such as agriculture, forestry, landscaping, and construction.
Paragraph 6:Backed by Tillotson's commitment to quality and customer satisfaction, the HD30A Carburetor comes with a comprehensive set of instructions and detailed illustrations to facilitate an effortless installation process. Additionally, the Tillotson team is always available to provide expert advice and support, ensuring that any operational issue is efficiently resolved. As a result, the Tillotson HD30A Carburetor not only provides exceptional fuel delivery but also delivers peace of mind with its unwavering reliability and easy upkeep.
The Tillotson HD30A carburetor is a popular choice for snowmobiles, ATVs, and utility vehicles with engines in the 340cc to 440cc range, including those manufactured by Arctic Cat, Deere, and Massey Ferguson. While each application may have specific advantages and disadvantages, here are some potential pros and cons of using a Tillotson HD30A carburetor:
Pros:1. Wide Compatibility: The Tillotson HD30A carburetor is a versatile component that can be used in various engine types and sizes within its recommended range, making it a popular choice for multiple brands like Arctic Cat, Deere, and Massey Ferguson.
2. Easy Jetting Adjustments: The HD30A has an easy-to-access jet needle and main jet, allowing quick and simple adjustments to improve performance and fuel economy.
3. Durable Design: Tillotson carburetors are known for their robust construction, which can withstand the demands of harsh environments and heavy use.
4. Good Fuel Efficiency: The HD30A is engineered for optimal fuel efficiency, ensuring a smoother running engine that can save you on fuel costs.
5. Replacement Parts Availability: Since the HD30A is a widely used component, replacement parts are readily available and affordable from various suppliers.
Cons:1. Complexity: Carburetors, in general, can be complex components to understand and maintain compared to fuel injection systems. The Tillotson HD30A is no exception, and proper tuning and troubleshooting may require a certain level of technical knowledge.
2. Sensitivity to Conditions: Performance and efficiency can be affected by external variables like altitude, temperature, and engine modification. These factors may require additional tuning effort to achieve optimal performance.
3. Carburetor Flooding: As with any carburetor, the HD30A is susceptible to flooding, which can result in poor engine performance. Proper jetting and needle settings, combined with cautious operation, can help mitigate this issue.
4. Air Filter Maintenance: Keeping the air filter clean is crucial for maintaining good carburetor performance. Neglecting filter maintenance could lead to potential engine damage.
Conclusion:Overall, the Tillotson HD30A carburetor presents both advantages and challenges when used in various applications for the 340cc to 440cc engines from brands like Arctic Cat, Deere, and Massey Ferguson. The benfits of wide compatibility, easy jetting adjustments, durability, good fuel efficiency, and replacement parts availability can easily outweigh the cons of complexity, sensitivity to conditions, susceptibility to flooding, and air filter maintenance if proper maintenance and regular tuning are performed.
Recommendation:Considering the mentioned advantages and disadvantages, if you're comfortable with carburetor maintenance and have the resources to perform periodic tuning, the Tillotson HD30A could be an excellent choice for your 340cc to 440cc engine due to its versatility, durability, and overall performance.
This Tillotsen HD30A carb looks to be in good shape/complete as pictured, and the throttle choke turn smoothly, but I haven't tested it. Thanks, -Paul.