How To Change Fuel Filter Yamaha 115

Your Yamaha outboard engine has a vapor separator tank next to the electric fuel pump.

The filter in VST treats the fuel earlier sending it to the next component in the system. Due to various reasons, it can go clogged and cause some issues.

In this article, I am going to talk most Yamaha VST filter symptoms and signs along with possible solutions.

What Signs Should You Wait for To Take hold of Faulty Yamaha VST Filter?

Due to the complex mechanism of the fuel line, you tin't pinpoint a component for a specific problem.

Withal, let me tell you when it is time to suspect that the VST filter is no working properly.

If you are having trouble starting the engine or information technology starts bogging down, yous will demand to inspect the health of the filter.

Now, that is one obvious sign, and let me tell y'all some more than.

What Are the Symptoms of a Bad Yamaha VST Filter?

Hither I am well-nigh to tell y'all some real-life experiences. Information technology volition help y'all empathize when you should check, clean, or supercede the VST filter of your Yamaha outboard engine.

RPM Maxes Out at 4500 or Less

A clogged filter sends less fuel to the cylinders leading to low ability output.

Lots of owners have experienced this problem of having 4500 or less RPM even though they run the engine at its full speed.

One or More Cylinder Not Working

From VST, gas goes into the fuel injector and to the cylinders afterwards that. When the filter gets chock-full and not performing to its best, the amount of gas released from VST gets decreased.

As a consequence, the fuel injector can't provide enough fuel to all of the cylinders. And, 1 or more pistons don't become the necessary gas to ignite and run the engine.

Non Starting at All

The above two situations happen when the VST filter is partially dirty. When it is completely blocked, the engine may not start at all.

How Should You React If You Find A Bad Yamaha VST Filter?

Y'all know the nature of a faulty VST filter of the Yamaha outboard engine. And information technology is time to take some actions to solve it.

Check the Filters

First of all, buy a fuel pressure gauge which should cost yous no more than than fifty bucks.
Connect the estimate to the Schrader valve (tire stem). You volition discover information technology on the fuel rails.
The next step is to take three different measurements; primal on, idle, and 1500 RPM. Also, brand sure to claw upwards the motor to water muffs earlier you begin.
If you encounter a reading of twoscore PSI, yous will know that neither fuel pumps nor VST filters are clogged. Otherwise, follow the below procedures one by i and troubleshoot.

Remove and Clean

It takes 10 Philips head screws, 3 mounting bolts, and 2 bolts on the bottom to separate the lower one-half of the vapor separator tank.

You volition find the filter on the bottom of the pump within the VST.

In case the component is almost clean, using only a carb cleaner volition be enough.

Supercede

Some boat owners may have their filters very dingy. In such situations, y'all will have to supervene upon the whole thing.

Tip : Make certain that y'all change the x-micron water separator annually. Information technology would increment the longevity of the filter.

Care for the Fuel

As today'south gasoline tin break down within weeks, yous should treat every tank of fuel. Initially, it may seem similar costly maintenance work. Only you lot will save a lot of money in the long run.

According to Yamaha, add loftier-quality marine-specific not-alcohol-based formula. Information technology works finer in moisture-rich environments that are mutual to boats.
Furthermore, use cleansing additives Band Costless PLUS which can forbid copper, brass, and silver solder in your fuel system from corrosion.
Besides, make sure that the gas you are buying is fresh. And so, avoid the shops where the auction is wearisome.

Tip : Both ethanol and non-ethanol fuels have merits and demerits. The all-time action against the gas problem is to go along the boat running. You lot should use the engine every bit many times as possible. Likewise, check and clean the filters and fuel injectors regularly.

Are Yamaha VST Filters Expensive to Supplant?

Yeah, the VST filter on your Yamaha outboard engine is very expensive to replace compared to other filters on the fuel line.

The filter itself tin can price you effectually fifty bucks or more.

Furthermore, you have to add the servicing accuse to the cost which varies from state to country.

However, being able to do the replacement by yourself tin can save a lot of money. There are lots of online videos showing how to exercise it like a professional person.

I am saying this because hiring a certified Yamaha mechanic tin cost y'all more than 500 hard-earned dollars.

How Often Should Yous Supersede VST Filter On Yamaha Outboard?

Co-ordinate to the official user guideline, information technology is ideal to check or audit the VST filter every 300 hours of operation.

Also, ane should not wait in case the filter goes bad, and replace it immediately.

At the aforementioned fourth dimension, service and maintain the 10-micron external and initial on-engine filters.

Final Thoughts

I have described the signs and symptoms of bad Yamaha outboard VST filters.

You should take activeness by examining the state of the filter to maintain the life and operation of the boat engine.

As it is expensive to replace, the manufacturer recommends its users continuously service and maintain the offset ii filters in the engine's fuel line. Also, treat the fuel in the tank to increase the life of the VST filter.

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