Maintenance
Servicing the Drive Shaft
1. Remove the silicone cooling line from the brass fitting
on the jet pump housing.
2. Use a 1.5mm hex driver to remove the bolts holding
the steering and trim links from the steering and trim
assemblies on the pump.
Use needle nose pliers to hold the nut that holds the
bolt to the lever.
3. Use a 1.5mm hex driver to loosen:
• the set screw holding the steering link to the steering
servo arm
• the set screw holding the trim adjustment link in place
4. Remove the trim adjustment link from the boat.
Inspect the links for damage and set them aside, taking
care not to mix up the steering and trim adjustment links.
5. Use a 2mm hex driver to remove the 7 screws
surrounding the main jet pump nozzle.
These screws are held to the hull by 2 plates that hold
the nuts. If the plates and nuts loosen inside the hull,
carefully remove them.
6. Gently pull the housing away from the hull by grabbing
it at the base.
It is normal for the rubber bellows to come off the hull
along with the nozzle.
7. Use a 2mm hex driver to remove the set screw that
holds the drive shaft to the weighted motor coupler.
8. Remove the drive shaft from the boat.
Use pliers to grab the shaft by the nut if removal by
hand is difficult. Do not use pliers on the drive shaft
threads or damage will result.
9. Inspect the impeller and drive shaft for excessive wear
or damage and replace them when necessary.
A discolored drive shaft indicates a lack of lubrication.
Increase the amount of marine grease you are using.
If you replace the drive shaft, you must also replace the
stuffing tube. See
Replacing the Stuffing Tube
for
more information.
10. Use the Dynamite® Grease Gun with Marine Grease
(DYNE4200) to apply 3–5 pumps of grease directly into
the brass stuffing tube.
Before installing the drive shaft into the brass tube,
place a paper towel between the motor coupler and the
brass stuffing tube to catch excess grease.
11. Install the drive shaft into the brass tube.
Insert the drive shaft into the brass tube using a
plunging and spinning motion thereby coating the drive
shaft with grease.
12. Using the paper towel placed in between the stuffing
tube and the motor coupler, push the drive shaft out of
the brass stuffing tube.
Ensure you have used enough marine grease. If there
is not excess grease, remove the drive shaft and apply
additional grease. Repeat Step 10.
13. Push the drive shaft into the motor coupler.
14. Apply a small amount of blue Thread Lock on the set
screw. Use a 2mm hex driver to install the set screw
into the motor coupler and tighten the set screw by
hand.
Tip:
Apply marine grease to the tip of your 2mm driver.
The grease will keep the set screw in place.
15. Ensure the impeller does not touch the jet pump
housing by spinning the motor or flywheel by hand.
If the drive shaft and impeller housing are touching,
loosen the set screw and pull the drive shaft out just
enough to provide the appropriate amount of clearance.
16. Install the jet pump nozzle on the hull.
Once all the screws are loosely in place, tighten the
screws down in a crisscross pattern. Do not over
tighten the screws or you will damage the flange on the
jet pump nozzle.
17. Install the rubber bellows from inside the hull outward.
Apply a small amount of marine grease to the bellows
to ease their movement through the hull. Remove
excess grease after installation.
Drivetrain Lubrication
Always replace the drivetrain parts when they are
damaged or show visible wear or injury and damage
may result.
Lubricating the driveshaft is vital to the life of the
drivetrain. The lubricant also acts as a water seal, keeping
water from entering the hull through the stuffing tube.
Brand new text
Use Recoil PRB49453
8
EN
River Jet
™
