Cutting pump 24V Jabsco 
Model 18590-2094 
Self Priming
Macerator Pump
With Dry Protection
Features
Pump: self-priming flexible impeller with 
Wear plate made of stainless steel 
Impeller: Jabsco Nitrile compound 
Information about the pump: 
New Model 18590-2094 
Macerator: stainless steel cutter reduces 
particle size up to 3 mm. New 4 
blade design. 
Seal: Lip Type
Ports: Inlet - 1-1 / 2 "(38mm) hose tail 
and 1-1 / 2 "N.P.T. (male)
Exhaust - 1 "(25mm) hose tail 
NEW 
Model 18590-2094 
Motor: permanent magnet type, complete 
Enclosed, with stainless steel shaft 
Including dry-running protection 
that switches off the pump. Powder coated 
housing with sealed end bells and bearings. 
Complies with USCG regulation 
183,410 and ISO 8846 MARINE for 
Ignition protection. 
Weight: 5 lb (2.3 kg) Approx. 
SPECIFICATION 
Model 18590-2094 
Priming - 5ft when wet
4ft when dry 
MAIN CAPACITY AND FLOW RATES 
AMPS 
Delivery head Meter GPM Liter 12 Volt 24 Volt 
0 0 12.5 47 14.0 7.6
5 1.5 11.5 44 14.5 7.8
10 3 10.5 40 15.0 8.1 
15 4.5 9.0 34 16.0 8.6
20 6 7.5 28 16.5 8.9
Flow rate and amperage will vary slightly depending on
loading pump (design sanitary system). 
VARIATIONS AVAILABLE 
MODEL NO. DESCRIPTION 
18590-2092 12 Volt EMC 
18590-2094 24 Volt EMC 
Grinding capacities - able to reduce waste 
up to a particle size of max. 1/8 "(3 mm)
Able to pass on waste, 
toilet paper, facial tissues, 
cigarettes, cigars, pieces 
soft fruits or vegetables less 
than 2.5 cm, fish scales, or
bait residue. Not designed to 
pass fruit kernels, rags, wet 
strength kitchen towels, 
tampons or sanitary napkins. 
APPLICATIONS 
Model 18590-2094 
WASTE DISPOSAL 
The Jabsco 18590 series DC grinder pump unit is the 
ideal solution for emptying sea tanks when 
not in a discharge restricted area. Self-priming up to 1.5 meters this 
pump will empty a typical capacity of 115 liters (30 gallons) 
refuel in less than 3 minutes. Duty cycle of the pump is 15 
minutes continuously, which means a 180 gallon (680 liters) 
can be emptied in one operation 
It is recommended that recovery tanks are flushed 
several liters of water after each pump. This will 
reduce the possibility of sustained sediment build-up
in the tank, which could cause a possible blockage. 
FISHBOX AND LIVEWELL TANK EVACUATION 
The Jabsco Macerator Pump is the ideal pump for the 
emptying fish box and live well bins. Very often 
the live well tank will be above the waterline of the boat, 
when this is the case, gravity can be used to determine the 
livewell tank. If not installed in this format, it is beneficial to use the Jabsco macerator pump for evacuation 
because of its self-priming properties and also the grinding 
properties. 
APPLICATIONS 
WASTE DISPOSAL 
FISHBOX AND LIVEWELL TANK EVACUATION 
Able to pass on waste, 
toilet paper, fish scales or 
bait residue. Not designed 
pass rags, kitchen 
towels, tampons, wet 
wipes or sanitary napkins. 
Fishing boxes are usually placed in the floor of the 
vessel and are often located below the waterline or alone
partially above the waterline. Again the Jabsco 
Macerator pump has the characteristics that lend itself to 
itself to this application. The bait remnants 
particles of ice, fish scales and everything else
could possibly be found in the Fish-Box 
managed to buy the Jabsco Macerator Pump, and get it yourself 
The priming capabilities are perfect for fish box installations
common to many of today's sport fishing boats. 
GENERAL INSTALLATION SUGGESTIONS 
The pump can be mounted in any direction without 
loss of performance. However, it is recommended that if 
the pump is mounted vertically than the pump head 
mounted under the motor (pump head pointing down)
Use the supplied rubber grommets to absorb vibrations
The Macerator pump can be placed directly in a 
1-1 / 2 "(38 mm) NPT tank flange or female pipe fitting. 
If you need to attach the inlet port to a pipe fitting this may be necessary 
removing the hose tail port, this can be done with 
a hacksaw. Wrap gate wires with a few turns
Teflon tape and screw the pump assembly into the tube
appropriate. Hand tighten, not too tight. 
Note: An air leak somewhere in the suction side of 
the plumbing system can cause prolonged drought 
run. All suction connections must be airtight and 
free from sharp bends
Description on article:
Jabsco 
24 volts
Ignition Protected Motor Complies With USCG
183.410 and ISO 8846 Marine
Made in Mexico
S/N14I56793
74001-2597 24V
USA UK Canada Germany Japan Italy
Description on packaging
Pump Sealed Macerator HD 24CE
S/N: 18B40297
Model: 18590-2094
Made in Mexico
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OE 671880564380/WA-18590-2094/WA-18590-2094
WA 185902094/WA-185902094/WA18590-2094
WA 18590-2094
18B40297/1-8-B-4-0-2-9-7
18590-2094/185902094