The Pump Jet Propulsion System delivers superior performance over all other Jet drives propeller guards or cages. Ideally suited for many military and rescue applications conventional open propellers, while extending useful service life of your outboard motor equipment. We offer a full line of parts & accessories, technical service and field support necessary to keep the professional ready for all operations.
Shaft Length: 15" or 20"
Shaft Color: Blue or White
15" - 159 lbs (72 kg)
20" - 163 lbs (74 kg)
Trim Method: Manual Tilt
Engine Type: Inline 2-cyl. E-TEC Direct Injection
Gear Ratio: 2.15:1
Alternator: Variable 56 Amps
Displacement: 35.3 cu. in.
Pumpjet Gear Case
SCOPE The operation of the outboard motor with a Pump Jet modification is similar to the operation of an outboard motor with a propeller. You will notice some differences in the steering, reversing and the durability.
STEERING The Pump Jet turns in a tighter radius than a propeller. This may benefit the avoidance of obstacles and in most cases eliminate ventilation. The steering torque experienced with a propeller, is greatly reduced or eliminated with a Pump Jet equipped motor.
REVERSE The Forward/Neutral/Reverse features of the gear case allow Pump Jet operation to be similar to the propeller. The Pump Jet pulls the boat in the direction by which it is steered. Quick increases in RPM’s will create the acceleration for positioning your boat as needed. No lateral walking is encountered as with a propeller. Pump Jet in-reverse may require some practice.
TRIM ANGLE SETTING The optimal trim angle setting of the Pump Jet is parallel to the surface of the water. This setting allows for full use of thrust.
DURABILITY The Rotor Housing and Stator Housing of the Pump Jet provide a high degree of protection for the rotor. This makes the Pump Jet much less vulnerable to damage from collision with obstacles than a propeller. The Pump Jet is less likely to cause gear damage than a propeller upon striking immovable objects. Caution should be practice while operating in shallow water.
SAFETY The Pump Jet offers two safety features. First, the projected frontal area of the Rotor Housing and Stator Housing is significantly reduced when compared to the diameter of an open propeller. Second, the totally enclosed spinning rotor reduces the risk of personal injury due to contact with rotating parts. However, any mechanical design in propless propulsion does not completely eliminate the possibility and/or risk of injury.
The Rotor Housing reduced entry of lines and debris which wind up around a propeller. The entrance design prevents this from happening. The design also allows for the service of the drive train as it would be with a standard propeller. Typical objects larger than a golf ball cannot enter the pump jet.
The rotor is designed to move water through the pump. Most debris can be flushed out of the pump jet by cycling the motor into forward and reverse. The rotor has a standard rubber hub install for shock reduction. Removal and replacement of the rubber hub is similar to a standard propeller. The stator housing is designed to project a water jet like nozzle. A series of fixed blades are used to counter the rotation of the water coming off the rotor, maximizing the trust. The stator screws with lock washers and should be tightened to 100 in-lb of torque.