CARBURETOR NEEDLE KIT YAMAHA 696-14590-01

Function and technical context

The carburetor needle is a critical component of the fuel delivery system on Yamaha outboard engines. This piece regulates the passage of petrol to the float chamber of the carburetor, maintaining the optimal level of fuel necessary for the correct dosage of the air-petrol mixture. Its precise operation is essential to ensure efficient combustion, maximum engine power and controlled consumption. If the needle becomes worn, dirty, or stuck, the carburetor cannot maintain proper fuel pressure and flow, resulting in misfiring, loss of revs, and unstable idle.

When to replace this part?

Typical symptoms of failure include difficulty starting cold or hot, irregular engine operation at low rpm, poor carburetion after long periods of storage, and presence of old petrol deposits in the carburetor. It is recommended that the carburetor be inspected and cleaned each boating season, and the needle replaced if it shows visible wear, corrosion, or if conventional adjustments fail to stabilize the idle. A preventive replacement avoids complex repairs to the entire carburetor and ensures reliable starting in any sailing conditions.

Compatible engines

Equivalent manufacturer part numbers