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MAINTENANCE AND LUBRICATION 

OUTBOARD JET DRIVE 

 

BEARING LUBRICATION 

 

A grease gun and tube of grease is supplied with your jet drive.  We recommend greasing 
the bearing every 10 hours.  Make greasing a part of your cleanup after the days use.  
Pump in just enough grease to fill the lube hose.  Then reconnect the lube hose coupling to 
the zerk grease fitting. 
 
Every 30-40 hours, pump in extra grease so as to purge any moisture.  The texture of the 
grease coming out gives an indication of conditions inside the bearing housing.  A gradual 
increase in moisture content indicates seal wear.  If the grease begins to turn dark, dirty 
gray, the bearing and seals should be inspected and replaced if necessary.  Some 
discoloration of the grease is normal during the break in period on new sets of seals. 
 
We have selected a water resistant grease of the proper consistency for this application.  If 
you use a substitute grease, be sure it is water resistant and of the same consistency.

 

 

IMPELLER 

 

Your jet drive is equipped with a key to protect the unit in the event of a rock jam. This can be 
reached by removing the water intake, and then the driveshaft nut, similar to a propeller drive.  
After replacing the key, pull the shaft nut up tight to remove any play between the impeller and 
shaft.  Note the position of the impeller shim washers, and replace them in the same order. 

 

REVERSE GATE MECHANISM 

 

Occasionally check adjustment of the gate shifting linkage. In “forward” the gate should be 
firmly locked in position.  Pull on the gate by hand to verify this.  This will prevent wave action 
from accidentally shifting the gate into reverse as the boat is violently maneuvered 

 

GENERAL 

 

Check all mounting bolts, intake screws, linkage connections, etc., occasionally to be sure they 
are tight. 
 

SALT WATER USE 

 

Aluminum and stainless steel have been used in the construction of your jet drive.  These 
materials have either been treated or are inherently resistant to corrosion. It is recommended, 
however, that when not in use the motor be tipped up so that the jet unit is out of the water.  
When used in salt water more than in fresh water, remove mounting hardware, grease, and 
reassemble once a year.  Failure to do this may result in hardware that is difficult if not 
impossible to remove at a later date. 

 

GUARANTEE 

 

Due to inflexible government regulation, we do not have a written warranty.  We have, however, 
a good reputation for fairness with our customers which we intend to maintain.  If you think you 
have a warranty situation, regarding material, workmanship, call us before making repairs. 
 
Specialty Manufacturing Company 
Outboard Jets 
2035 Edison Avenue 
San Leandro, CA  94577 

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