See full version: How to Test a Yamaha Outboard Fuel Pump
Operate your motor across the full range of speeds without shutting it down. If the motor operates properly for several hours at high speeds and low speeds without faltering, the fuel lines or the fuel filters were the problem. If, however, the motor begins to stumble, particularly at high speeds, take note of the tachometer and any fluctuations in the motor speed. [links]
Squeeze the fuel primer bulb while the motor is running. If the motor runs rough when operating a high speeds, and if the motor smooths out when you squeeze the bulb, replace the fuel filters, clean out the fuel lines and repeat the test. If the results are the same, replace the fuel pump; if not, continue your boating activity.
It may be that when your Yamaha outboard motor begins to sputter and cough, particularly at high speeds, you think something's "obviously" wrong with the fuel pump. You can test that theory without taking the fuel pump off your motor and without returning to shore. If you think you have a problem with your outboard motor's fuel pump, a quick test completed while you are boating can answer all but one question. more
Squeeze the primer bulb several times quickly, force-feeding the motor. If the problem disappears as you pump, but returns after you stop, replace the pump. If the problem doesn't disappear, or if the motor stalls, the problem is somewhere other than in the fuel pump.
you now have a brand new rebuilt pump. more
Yep, kind of tough to buy a complete pump when one is not available. Just cause one Yam model has a standalone fuel pump available (or two) won't mean that another Yam model has a standalone fuel pump. [links]
price all the diaphrams and gaskets.
you will find its almost 25 bucks give or take.
a pump is about 45 dollars new.
I don't believe that the carburetor repair kit has the piece parts needed to rebuild the fuel pump.
*Indicates manufacturing date. For example, "(0408)" indicates that the motor would have a manufacturing date after April of 2008. If you do not know the manufacturing date you can find this information on the same label as your motor model and serial number. more
**Indicates a range of serial numbers that falls into this category. Knowing your serial number (also known as your “Primary ID” is important in making sure you get the correct parts for your motor as parts may change from one model year to the next. You can find your serial number on the sticker on your bracket following the engine’s model code. [links]
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6A0-24410 692-24410 Fuel Pump Assy For Yamaha Tohatsu Suzuki Outboard 25HP-85HP. This Fuel Pump Assy will work on Most Yamaha Outboard 25HP - 90HP 2 -stroke engine. For Yamaha Outboard Part No.: 692-24410-00-00. 6A0-24410-00-00, 663-24410-00-00.. 。.
Metal Mecánica: Perfil GHT, Ángulo GHT, Tubo GHT, Lámina GHT, y metal mecánica HRC (negra) [links]