The Fuel Pump Diaphragm is for use with Yamaha Outboard. This part type is also called the carburetor accelerator pump diaphragm. It functions as a composite membrane that flexes up and down over a fuel bowl with input and output. Every valve is in place to ensure a one-way motion of the fluid. When the diaphragm moves up, it creates a vacuum that pulls the fuel from the tank into the fuel bowl. To know if it's working, attach another fuel line to the outlet, clamp it tightly, and prime the bulb. If there are fuel leaks through it when there is a problem in the fuel pump diaphragm.
Key Features:
Specifications:
Fuel Pump Diaphragm fitting Yamaha Outboard applications
We can ship to virtually any address in the US. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.)
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, please Contact Us with your order number and details about the product you would like to return. We will respond quickly with instructions for how to return items from your order.
Sea Star Solutions
Fuel Pump Diaphragm for a Mercury, Yamaha, or Suzuki, this is the one. Precision engineering ensures compatibility with your motorcycle's gasoline tank, marine fuel pump, and other eligible vehicles...
Sea Star Solutions
The Fuel Pump Diaphram 18-7840 is an innovative craft for Mercury and Yamaha outboard engines used with Sierra 18-7787 Fuel Pump Kit. Diaphragm pumps work using a composite membrane that bends up and...
Sea Star Solutions
Diaphragm pumps work with a composite membrane that flexes up and down over a fuel bowl. The bowl contains an input and an output, each with a check valve to reassure one-way fluid flow. As the...
Sea Star Solutions
18-7841 Fuel Pump Diaphragm by Sierra for Yamaha Outboard Motors Fits: 30 HP. A faulty fuel pump diaphragm will result in lower fuel pressure than is required for the engine to work correctly. The...
Sea Star Solutions
A composite membrane used in diaphragm pumps bends up and down over a fuel bowl. The bowl contains an input and an outlet with check valves to guarantee that fluid only flows in one direction. A...
Sea Star Solutions
If your outboard's fuel pump is faulty, Sierra provides aftermarket replacements. With the Sierra 18-7809 Fuel Pump Diaphragm Kit, you'll have just what you need. Perfect for Mercury/Mariner Outboard...
