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MerCruiser

HOW TO CHOOSE THE CORRECT WATER/FUEL SEPARATOR

Water/Fuel Separators are categorized by their capacity oil from the fuel in two stroke outboard engines. For this reason
to filter different sized dirt particles. Rated in Microns, (each JML sells only the 10 and 28 micron fuel filters.
micron is one millionth of an inch in diameter) marine filters The 28 micron filter is the most common size fuel filter in
will normally be available with elements capable of filtering 2 the marine industry and is the standard replacement filter for
micron particles, 10 micron particles, or 28 micron particles. A all two stroke and four stroke marine engines. The JML 28 micron
marine filter capable of filtering 2 micron particles will clean filter exceeds all engine manufacturers’ specifications for
the fuel more efficiently than a 28 micron filter but will be more particulate filtering, water separating and fuel flow.
restrictive to fuel flow. The 2 micron filter will also become The JML 10 micron filter will provide exceptional filtering
dirty sooner and will need replacement more often. and only moderate fuel pressure loss. When used with sufficient
Fuel flow is rated in Gallons Per Hour (GPH). A typical sized fuel lines it will flow enough fuel for inboard engines up to
350/5.7L inboard engine will require 27 GPH at 4,800 rpm, a 550 horsepower. It will not separate the oil from the gasoline on
454/7.4L inboard engine will require 37 GPH at 4,800 rpm. a two stroke outboard equipped boat. Because a 10 micron filter
Selecting a fuel/water separating filter should be based on the clogs faster than a 28 micron filter JML recommends it only for
amount of fuel the engine requires in GPH at wide open throttle. boaters who are vigilant in replacing the water/fuel separator
A 2 micron fuel filter is generally too restrictive for the filter at regular intervals.
average four stroke inboard engine and may separate the

JML Fuel Filter Features

* 28 or 10 micron filter paper shaped into 70 pleats total 327 sq. in. filtration.
The largest filtering capability in the aftermarket. (4)
* BWG #11 heavy duty spring (6).
* Gasoline resistant rubber seals (1) (3).
* Oxidizing treatment inside powder coated outside for corrosion
protection (5).
* Minimum 196N.m. torgue strength between adapt plate and canister (2).
* Will not separate 2 cycle oil from gasoline!

SUS316 Translucent Red Die Cast
Stainless Steel Brackets Stainless Steel Brackets Aluminum Brackets
No. 25010 No. 25030 No. 25011 No. 25031 No. 25000 No. 25020
w/ 2 brass plugs w/ 2 brass plugs w/ 2 brass plugs w/ 2 brass plugs w/ 2 brass plugs w/ 2 brass plugs
2 extension tubes 2 extension tubes 2 extension tubes 2 extension tubes 2 extension tubes 2 extension tubes

ø 1/4” NPTF Ports ø 3/8” NPTF Ports ø 1/4” NPTF Ports ø 3/8” NPTF Ports ø 1/4” NPTF Ports ø 3/8” NPTF Ports
(2 inputs & 2 outputs) (2 inputs & 2 outputs) (2 inputs & 2 outputs) (2 inputs & 2 outputs) (2 inputs & 2 outputs) (2 inputs & 2 outputs)
No. 24942 No. 24940 No. 24941
WATER SEPARATOR FUEL FILTER WATER SEPARATOR FUEL FILTER WATER SEPARATOR FUEL FILTER
OEM: 35-802893Q OEM: 35-60494-1 OEM: 35-807172

10 micron 28 micron 28 micron

Height 4-7/16” Height 4-7/16” Height 3-3/4”

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