Yamaha Components for Carburetors

YamahaOnlineParts.com stocks Yamaha marine outboard carburetors and components, which can be used to adjust the air and fuel flow to the Yamaha outboard engine for enhanced performance. Our carburetors and parts are compatible with all Yamaha outboard motors. If you need to replace your carburetor in a hurry, we provide next-day shipping for all products in stock.

Need help determining the right Yamaha OEM parts and Accessories for your Yamaha outboard engine? Check out these helpful resources:

Yamaha Marine Carburetors and Components FAQs

What are common Yamaha outboard fuel system issues?

A typical issue that can cause your Yamaha outboard engine to malfunction is a failure within the fuel system. This could be demonstrated through a momentary stalling, underperformance, or even a total system breakdown.

Ethanol gasoline: It is essential to use only the best quality ethanol-free gasoline for Yamaha outboards. This is because ethanol has the capability to pull in water, leading to "phase separation" of the fuel. Moreover, ethanol-based gasoline can also obstruct fuel lines and fuel system components due to the additives present. To protect against these troubles, routinely utilize a top-notch fuel stabilizer.
Fuel lines: Examine your Yamaha fuel lines for any cracks or leaks. If you find any, stop running the engine and change them. Additionally, inspect any fuel hoses which have an interior lining.
Fuel filters: The fuel filter on your Yamaha outboard motor has been created to capture any dirt particles or pollutants that have made their way into your fuel system. It is important to regularly change these filters so that your fuel will continue to have an unobstructed flow.
Fuel pump: If your Yamaha fuel pump isn't functioning properly, it can severely impact your engine's output and potentially damage other parts. To avoid this, it's important to replace the fuel pump and any hoses that may have been affected.

Will doing my own maintenance void my Yamaha outboard engine’s warranty?

To put it briefly, the answer is no. Your Yamaha warranty will remain intact even if you take care of your own maintenance. However, it is important to know the difference between maintenance and warranty service tasks.

You can either do the upkeep on your own or assign someone to do it for you. If there is a malfunction resulting from inadequate maintenance or servicing, unfortunately, it won't be covered by the warranty.

It is important that you go through the owner's manual or online maintenance schedules to plan the maintenance required, but certain procedures must be performed by an authorized Yamaha service center, for example, checking the valve clearance and inspecting the timing belt.

If you are doing your own maintenance on your Yamaha outboard engine, make sure to adhere to environmental regulations by getting rid of oil and other engine fluids appropriately. In addition, if you require assistance in locating the proper Yamaha outboard components or Yamaha maintenance kit for your particular engine, our Yamaha Outboard Parts Library can be of great help.

What are common Yamaha 4-stroke outboard engine problems?

Yamaha F115 is a superior 4-stroke motor which is consistently rated highly for being dependable, having long life, and showing excellent performance.

The 1.8-liter displacement and DOHC/SOHC designs with four valves per cylinder in the outboard make it lightweight and incredibly efficient. It's a great option for the mid-sized vessels and offers a lot of value for money. Since it was released in 1999, the Yamaha F115 has gone through several enhancements, incorporating contemporary elements that are suitable for watersports and fishing aficionados.

Here are five of the most common Yamaha 115 4-stroke problems, including:

Faulty head gasket
Bad fuel pump
Clogged fuel injectors
Clogged VST filter
Trim and tilt switch issues

How do I repair my Yamaha outboard’s clogged fuel injector?

To provide you with a comprehension of the duties, tools, and machinery necessary with a do-it-yourself venture, here is what is required when you clean your fuel injectors:

To get started, you must take off the fuel injectors from the engine, and this involves detaching the fuel rails. (It is possible to clean Yamaha outboard fuel injectors without having to remove them from the engine, but there are certain steps that must be taken first).
Take off the rubber O-rings and gaskets from every fuel injector cautiously.
After taking the injectors out, use a cloth and fuel injector cleaner to clean them off and eliminate any dirt that is on their surfaces.
Following that, you will secure a fuel hose and bind the fuel injector to one end of it.
Fill the fuel hose with an ample amount of fuel injector cleaner.
On the opposite end of the hose, one must affix it to an air compressor in order to replicate the pressure present in the engine and thrust the fuel injector cleaner through the injector's nozzle. (Note: There is specialized machinery designed especially for this purpose).
Repeat the process until each of the fuel injectors have been cleaned.

How do I service my Yamaha outboard fuel system?

Keeping the fuel system of Yamaha equipment in good condition is a key part of 100-hour service. Depending on the kind of boat and the way it is used, there may be a fuel-water separator filter on board. If you cannot see it, just trace the fuel line from the engine till you get to the source. These filters can come in various shapes and brands, so be sure to obtain the same kind for replacement. Use a filter wrench to loosen the current filter element, taking care not to spill the fuel that is inside.

When discarding the filter, it is beneficial to have a transparent plastic or glass receptacle at the ready to inspect the contents. Tiny bits of debris, and a minor quantity of liquid are usually seen once the petrol has had a bit of time to settle. But if there is a great amount of water, additional research is necessary. If the filter’s mounting position allows it, filling the new filter with a bit of petrol prior to installation is a great idea, as it will make re-charging the fuel system more manageable later on. Also, it is sensible to apply a slight amount of grease to the o-ring before fitting it. Hand-tighten the filter only halfway and spin it on.

Go back to the engine and spot the filter element inside the clear plastic bowl at the front of your block. The cup-shaped device may be taken off with a special wrench made for it or by using regular tools and being careful. If necessary, disconnect the water-in-fuel sensor and unscrew the cup from the housing. Empty the contents into the clear container and check the fuel. If the main water separator was without water, this filter should be too. Have a look at the o-ring on the top of the filter cup and put a bit of grease on it to make it easier to install, or substitute it if necessary.

Change the existing filtration component with a brand-new one and put the cup back in place. Utilize the cup wrench to make it tight. Locate the primer bulb of your engine and employ the primer to pressurize the fuel system. You should witness gasoline go in and fill the filter cup. Check for any seepage and run the primer until the bulb turns firm. As an additional advice, primer bulbs perform optimally when the arrow is pointing upwards, so use any additional hose in the line to turn the bulb upright.

If you don't use Yamalube Ring Free on a consistent basis, the 100-hour service interval is an ideal time to give your fuel system a "shock treatment." Ring Free is both a fuel system conditioner and carbon deposit remover. The standard amount to use is 1 oz for every 10 gallons, but if it isn't used regularly, you can double that rate for a more effective cleanse. Simply pour the Ring Free into the fuel tank fill and hit the water - no further effort is required. It is suggested to check the o-ring of the fuel tank fill for damage when adding Ring Free because a damaged o-ring could allow water from rainfall or boat washing to enter the fuel system.