YAMAHA 4TR-14940-00-00 Carb Carburetor Diaphragm Needle Cap Spring Set

( Manufacturer Part Number: 4TR-14940-00-00 ), ( Type: Carburetor )

Review YAMAHA Oem Carb Carburetor Diaphragm Assy Needle Spring Cap Set fits STAR 650 1998–2003

Introducing the Yamaha 4TR-14940-00-00 Star 650 Carburetor Diaphragm Needle Spring Cap Set, a must-have replacement part for your Yamaha 650cc engine. This set includes essential components that play a crucial role in the proper functioning of your carburetor, ensuring optimal engine performance.

The diaphragm is a critical component of the fuel system, which converts vacuum pressure into mechanical energy for fuel flow. This set includes a new diaphragm that is specifically designed to fit the Yamaha 4TR carburetor model between the years of 98 and 03. The diaphragm is made from a durable rubber compound that is resilient to fuel and oil, providing excellent sealing properties and long-lasting performance.

The needle valve is another essential component within the carburetor that controls the fuel mixture entering the engine. This set includes a new needle valve needle, which features an accurately machined tip to provide precise fuel delivery. The needle is made from a high-strength material that can withstand the rigors of continuous use, ensuring reliable performance.

The needle spring is responsible for maintaining the correct position of the needle valve, and this set includes a new needle spring. The spring is designed to provide the correct tension for the needle valve, ensuring consistent fuel delivery to the engine. The spring is made from a high-tensile material that can handle the pressure and temperature extremes of engine operation, ensuring durability and long-lasting performance.

The cap is the final component in this set, which covers the top of the needle valve. This set includes a new needle valve cap, which provides a secure seal to prevent fuel leakage and protect the needle valve from external contaminants. The cap is made from a durable material that can withstand the harsh conditions of engine operation, ensuring a long service life.

In conclusion, the Yamaha 4TR-14940-00-00 Star 650 Carburetor Diaphragm Needle Spring Cap Set is an essential collection of replacement parts for your Yamaha 650cc engine. These components are crucial for the proper functioning of your carburetor, ensuring optimal engine performance. By replacing worn or damaged parts with new ones from this set, you can ensure that your engine continues to run smoothly and efficiently.

Buying Yamaha 4TR-14940-00-00 98-03 Star 650 Carburetor Diaphragm Needle Spring Cap Set: A Comprehensive Analysis

The Yamaha 4TR-14940-00-00 98-03 Star 650 Carburetor Diaphragm Needle Spring Cap Set is an essential replacement part for repairing or rebuilding a Yamaha Star 650 motorcycle's carburetor. In this analysis, we will discuss the potential pros and cons of purchasing this component, followed by an ending conclusion and a recommendation.

1. Improved Performance: A worn-out or damaged diaphragm, needle, spring, or cap can significantly impact the carburetor's performance. Replacing these parts with new ones can help restore the engine's fuel efficiency and power.

2. Cost-Effective: Buying a complete set of these components instead of replacing them individually can save money in the long run.

3. OEM Quality: This set is an original equipment manufacturer (OEM) product, which means it is designed specifically for Yamaha Star 650 motorcycles and should fit and function perfectly.

1. Cost: While purchasing a complete set can save money in the long run, the upfront cost may be higher than buying individual parts.

2. Availability: Depending on the location and supplier, it might be challenging to find this specific part set in stock.

3. Installation Complexity: Installing these components may require some mechanical knowledge and skills.

The Yamaha 4TR-14940-00-00 98-03 Star 650 Carburetor Diaphragm Needle Spring Cap Set is a valuable investment for those looking to repair or rebuild their motorcycle's carburetor. While it may come with an upfront cost and installation complexities, the long-term benefits, such as improved performance and cost savings, often outweigh the initial investment.

If you own a Yamaha Star 650 motorcycle and suspect that your carburetor's diaphragm, needle, spring, or cap needs replacement, consider purchasing this complete set. Although it may require some mechanical knowledge and skills for installation, the OEM quality, cost savings, and performance improvements make it a worthwhile investment. To ensure availability and price competitiveness, consider purchasing from reputable online retailers or authorized Yamaha dealers.

part # 4tr149400000 prices

• $75.99-$120.00

specifications iodacarb:

• for models: 650, Star
• for makes: Yamaha
• for years: 1998-2003
• manufacturer part number: 4TR-14940-00-00
• type: Carburetor

offer iodacarb:

• availability: In Stock
• started: October 15, 2025
• quantity: 1
• best offers: True
• options: Ship-to-home
• sold: 0

payments iodacarb:

• wallet: Google-pay
• other
• credit card: Mastercard

seller iodacarb:

• # reviews: 4717
• rating: 99.4%

general iodacarb:

• condition: Used
• Motorcycle Scooter Parts Accessories > Air Intake Fuel Delivery > Carburetors

shipping iodacarb:

• type: Fixed
• service: Standard
• transit: 2-6 Days
• cost: $6.00
• class: Standard

returns iodacarb:

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

Yamaha 4TR-14940-00-00 Is Similar To:

• Yamaha 4sv-14105-00-00 R1 Yzfr1 98-01 Carburetor Carb Air Fuel Screw (48.8% similar) $15.81–$17.49. (August 26th, 2024)
• Yamaha 10l-14901-01-00 1983 Virago 920 Xv920 Carb Carburetor 10l-14902-01-00 (52.3% similar) $125.00–$300.00. (August 26th, 2024)
• Keihin 2s2-14101-b0-00 2006 - 2009 Yamaha Yz450f Oem Fcr Carburetor Carberator (36.8% similar) $299.99–$499.00. (August 26th, 2024)
• Yamaha 8cc-14232-24-00 R1 Yzfr1 98-01 Carburetor Carb Air Jet #120 (44.4% similar) $14.99. (August 26th, 2024)
• Yamaha 4km-14142-15-00 R1 Yzfr1 98-01 Carburetor Carb Pilot Jet Slow #15 (44% similar) $8.54–$10.99. (August 27th, 2024)
• Yamaha 3g2-14231-26-a0 R1 Yzfr1 98-01 Carburetor Carb Main Jet #130 (42.9% similar) $10.55–$271.62. (August 27th, 2024)
• Yamaha 2hg-14101-00-00 1987 Yz125 Carb Carburetor (52.4% similar) $13.49–$249.00. (August 27th, 2024)
• Yamaha 5jj-14453-00-00 R1 Yzfr1 98-01 Carburetor Carb Airbox Joint Boot Clamp (43.9% similar) $19.99–$55.80. (August 27th, 2024)
• Mikuni 3lk-14904-11-00 1989-94 Yamaha Fzr1000 Carburetor Assembly (36% similar) $19.00–$45.50. (August 27th, 2024)
• Yamaha 4xv-14900 1998 1999 98 99 Yzfr1 R1 Oem Carburetors Carbs Intake 4xv (48.2% similar) $225.00–$437.16. (August 27th, 2024)
• Yamaha 5xc-14101-00-00 03-05 Yz250f Yz 250f Oem Keihin Fcr Carb Carburetor Intake Throttle Tps (53.7% similar) $34.99–$110.00. (August 27th, 2024)