What Does The Inline Filter Do On My Yamaha Outboard Engine

If there e'er was a boating awarding that manifested the axiom that "an ounce of prevention is worth a pound of cure," information technology'southward installing loftier quality fuel filters. With the proliferation of E-10 gasoline and bio-diesel fuel in coastal marinas, and the potential of even more than radical changes to come, the importance of having constructive fuel filtration between your vessel's tanks and engines has never been greater.

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Photo: Mercury

Eastward-10 gasoline brings a night side to the marine fuel mix. The alcohol-laced gasoline cleans out all of the muck in your boat's tank and fuel lines and transports it direct to your engine, where information technology tin cause a world of hurt past restricting fuel flow, starving engines for fuel under high-speed loads, and causing premature overheating and powerhead failure. Another problem with E-10 fuel is phase separation, a situation where moisture introduced into the fuel supply causes the ethyl alcohol to chemically delink from the petroleum and settle to the lesser of your tank(s) where your pickup feeds are located. Stage separation creates bad chemical science that volition ruin your day if your engine runs on it for an extended period. Adding an in-line fuel filter between your boat'south fuel tank and the outboard engine(s) should help minimize these two problems.

If you simply have i filter on board, it's best to go with the 2-micron chemical element that will catch just almost everything.

On the diesel side, B20 biofuel and other biofuel blends are starting to brand their way into the marketplace. B20 derives its name from a mix of 80 percent diesel and twenty percent biomass and like E-x and E-85 gasoline, its intent is to use renewable domestic resource to produce a fuel that reduces our dependency on foreign oil, while also limiting greenhouse gases. With the introduction of B20 into the diesel fuel equation, it'due south more than important than always to trap contaminants and h2o before they reach your engine and crusade problems.

To get the latest intel on fuel filters, I called a trio of experts from Mercury, Yamaha and Racor. David Meeler is the Marine Product Information Manager for Yamaha and recommends using a 10-micron fuel filter between the tank and the engine, since it's "the primary line of defence force and helps protect all of the onboard filters behind it."

A typical F225 V6 iv-stroke outboard has four additional fuel filters on the engine, with a minor in-line filter/water separator on the fuel intake line with a ruby ring h2o indicator that must be changed every 100 hours, a filter/screen at the bottom of the vapor separator tank that should exist changed every 200 hours, an in-line fuel filter between the fuel pump and the fuel rail that should be replaced every 100 hours, plus screens at the base of each fuel injector that are simply serviceable by the dealer.

Yamaha offers two different 10-micron filters, with the mini slated for outboards up to 115 HP and a standard filter for every outboard in the Yamaha armory up to 350 HP with a flow charge per unit of 90 gallons per 60 minutes. The "Big 10" offers 95 percent efficiency and Dave recommends irresolute the replaceable canister element every 50 hours. If you have a Yamaha outboard with Command Link, at that place is the capacity for this system to identify water-in-fuel problems via electronic sensors.

My next telephone call went to John Neville, Director of Service Parts for Mercury Marine. The latest addition to their family of fuel filtration products is their Loftier Capacity H2o Separating Fuel Filter, which is an enclosed spin-on canister blazon that offers a 16 oz. internal chapters, which is twice what most competitive aftermarket filters offer. This newbie offers 10-micron filtration at xc percentage efficiency with a menstruation rate of 120 gph. Considering of its added volume, the recommended alter-out interval is 200 hours. According to John, this filter is offered with both Quicksilver and Mercury branding, and offers a particularly engineered silicone media that strips water more efficiently out of ethanol-based fuels. The Merc High-Cap is good for both gas (Eastward-ten max) and diesel (upwards to vii percent biodiesel) applications. It contains 25 per centum more than media than comparable aftermarket filters for longer life. Its low-pressure drop reduces fuel flow restriction, helping to forestall vapor locking and stalling, and the internal epoxy coating protects against corrosion.

A secondary issue for fuel filters is the demand to keep the vacuum between the tank and engine within specs. As the fuel filter clogs and cuts off flow, vacuum increases equally it takes more effort to pull fuel through the organization. This causes premature wear on the fuel pump and its components and leads to vapor lock. John recommended that boaters utilize a vacuum gauge on the engine inlet with a T connection and monitor the vacuum pressure.

Notwithstanding another fuel filter offered past Mercury/Quicksilver is one that was developed past the engineers at Parker/Racor. The model S3227 10-micron replaceable element is essentially married to a standard Racor 320R-RAC-01 frame with a clear bowl that features a built-in water drain to remove visible contaminants. The replacement elements are available through local marine retailers and also come up with an optional electronic h2o-in-fuel sensor.

Speaking of Racor, no article on marine fuel filtration would be consummate without talking to the folks that practically invented the game. Marker Dickman, Racor's Marine Business organisation Evolution Director shared his thoughts with me about diesel fuel filters. Primary filters are located between the tank and the engine and secondary filters are typically mounted on the engine. When going this road, Marker suggested using a 30-micron filter as the primary and a 10-micron filter for the secondary element. If you only have i filter on board, information technology's best to go with the two-micron element that will catch simply about everything. Racor is one of the few manufacturers that offers three micron ratings for most of their replaceable filter elements. Regarding when to change what, Mark inferred that this was driven more past existing engine vacuum pressures than specific time intervals. For diesel engines, 0 to ten PSI is the happy zone. At 12 to 13 PSI a yellow caution flag goes up and at 15 PSI it is time for a filter change due to fuel period restrictions.

Racor makes a number of commercial diesel fuel filter lines, the two most pop are the Spin-On series and the Turbine series. The Spin-On is a simple fashion to take care of your chief filtration needs. Offered in a variety of flow rates up to 120 gph, the centre of the filter is the canister's proprietary Aquabloc II medium, which effectively removes water and traps contaminants in its internal baffles. Some of these fuel filters are likewise offered with handy onboard primer pumps, and all provide an electronic h2o sensor option. The Turbine serial filters are a step up the evolutionary ladder with clear bowls to visualize h2o and a spinning internal turbine that works to separate h2o and contaminants from the fuel. Racor also offers some really cool dual and triple filter systems with built-in valves, plumbing and vacuum gauges if you accept the demand. Marking'south parting advice for boaters was to practise the proven Noah's Ark principle of marine management…take two of everything, especially fuel filters.

What Does The Inline Filter Do On My Yamaha Outboard Engine,

Source: https://floridasportfishing.com/filters-for-fuel/

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