Jet Ski Stator Rebuild – Rebuild Services, Kits, and Information
Stator rebuild services start here! First and foremost as you may know, two different components can be considered the “stator” on a PWC. In this case we are going to be discussing the Jet Pump Stator companent and not the rotor magneto generator which is also referred to as a stator. If you would like to read about Stator Generator rebuild services and education please click here to view our article discussing this topic. Thanks!
Jet Pump Stator Rebuild and Restoration
Personal watercrafts have some unique features, as well as different interesting designs and horse-powers. Some Jet Skis are designed for one person only, but today there are many Jet Skis available that can carry two, three or even four people. Jet Skis are getting bigger and they can also carry lots of cargo inside them. Depending on the design, cargo and the riders some of these watercrafts can weigh to more than half a ton. The more weight is being carried by the Jet Ski, the more of the bottom end is needed to go at a faster rate. Although the modern Jet Skis are well equipped with quality inside parts, heavy cargo and heavy loads can put a hard pressure on the engine to respond and start as quickly as expected. There are certain modifications and adjustments that can be done for the Jet Ski to respond better.
Larger Jet Skis that are used for recreation and fun are usually more bottom end power, and their desired performance can be achieved if the impeller pitch gets reduced. That will limit the volume that is allowed to pass inside the pump. Also, by raising the pitch of the impeller you would be able to squeeze out some speed of the watercraft that carries a lot less weight than when it was designed.
When the manufacturers design the impellers and personal watercrafts, their main objective is to reach the best possible efficiency and performance for the range of the PWC pumps that impeller applies to. That way they will ensure that they are providing you with the top speed and bottom end speed without making compromises. However, not always they succeed in that, and the original equipment manufacturer is usually designed to accommodate lots of different users. Each watercraft is a bit different, and the riders` desires about the performance also differ. Ready to move forward with your PWC stator rebuild project?
Jet Ski pumps and impellers work with negative and positive pressure, or so called pull/push principle. As the blade rotates, it uses a centrifugal force to push the water back and outwards. At the same moment, the water must go in to fill in the space which is left behind the blade. The result of this is a pressure difference between the sides of the blade – the positive pressure gives a pushing effect on the face of the blade and the negative pressure pulls the blade back. This type of action happens on all of the blades in the full rotation circle.
The design of the impellers and the efficiency is closely connected with the other components in the Jet Ski that make the pump. That is the venture rate of compression, the volumetric area of gullet, the weight and mass of the hull, the placement of the pump or its depth, the transition of the intake housing, the angle of trajectory or the stator blade area. One fact that is certain is that the shrouded propeller is producing bigger efficiency than its counter-part. This is because the propeller allows the water to slip outwards, while the duct is controlling the water and pushes it backwards.
The best thing to do when you have a problem with the Jet Ski stator is to call a certified mechanic to make the inspection before purchasing a stator rebuild . There are trained professionals that can finish the job in shorter period of time, so you would not have to worry about anything. If you try to repair something by yourself and you do not know how to properly do it, you risk damaging some of the Jet Ski parts. However, if you want to try it yourself then there are certain steps that you should have in mind and follow.
First thing you need to do is to remove and to separate the whole jet pump from the Jet Ski. Second step is to remove the tail cone cap from the stator pump. As soon as you do that, hold the back end of the shaft with a vise and start removing the impeller with a wrench. If you are turning counter clockwise, you will loosen up the impeller. After you finish removing the impeller, visually check and inspect the thread on the shaft and the other threads for damage or wear. Apply some anti-seize to the threads. Next, screw the impeller on, but make sure you use some gloves because some of the impellers have pretty sharp edges and you may get cut. After you tighten everything up with the wrench, assemble the Jet Ski pump again are return it back in the Jet Ski.
