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Loss of thrust in Starboard pump *photo*

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zgn

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I have an 18" 1998 Seadoo Sportser
After a trip to the bay I belive I had some seaweed injested. Ever since I have a very large loss of thrust on the starboard side engine.

There is no seaweed that I can see but I did notice something that looks out of the ordinary. It looks like something is broken where the impeller shaft goes into the hull. See photo:

Can anyone provide any assistance to what needs to be done to repair this?

Thank you,


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As for thrust, and with you missing the driveshaft protector(which is no big deal now), you need to inspect the wear ring and impellor for damage. Sounds like your wear ring is jacked up...(hard plastic insert, that goes around the impellor).
 
As for thrust, and with you missing the drive-shaft protector(which is no big deal now), you need to inspect the wear ring and impeller for damage. Sounds like your wear ring is jacked up...(hard plastic insert, that goes around the impeller).

That's what I was thinking but I was not sure exactly what that broken piece was.
 
There is a plastic shaft that goes over each driveshaft, it is to help keep out tow ropes and other stuff from getting twisted around the shaft. I have replaced them before at a dealership i worked at. You will need to remove the pump.
 
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Clips....

There are a few clips that hold that shaft guard in place. Yours is broken almost clean. If it doesn't cause cavitation, then leave it just as is. There is no sense in taking the pump off just to take off that small piece of useless plastic. I think the R&D engineers were looking for something to do when they came up with those things.........
 
The idea of the engineers to add that plastic flange type of thing is to keep any tow lines from getting in that tight small area just above the shaft. The clearance of the fiberglass hull gets real close to the shaft there and if the line would get bunched here it would crack or damage the fiberglass in this area as it wound around the shaft. If you notice the rest of the intake it is larger as it gets near the impeller. That flange keeps the line from wrapping the shaft, it would just wrap after the flange, and have less damage with more room to wrap.

Karl
 
Yeah you would think the Seadoo engineers know a thing or two about there engines and set-ups dude??? Replace the plastic tube....or you could suck up another rope and mess it up even more "engine" especially if you were to run over the rope at a good rpm. Or you could listen to "that guy" "you don't need to replace it"..
 
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in that sense, you would of thought then, the engineers would have take'n into consideration of ANYTHING out in water, make'n some type of deflection, but allow water in.

My experience, it only took that 1 time to run over the rope, to learn/keep eye on it, and since then, just using cautious when retrieving the down boarder. Sure it'll happen again, but i'll take the chances, and not replace the protector...:cheers:
 
Plastic rope guards.........?

In the last few years, many members have removed these because of the hassle they create when you do get something caught up in there. There is no real reason for them to be there. It was one of those things were someone sat around and said, "how can we change something to make some more money in parts?". They came up with the guards.

The first few years the boats were sold, this was not a part of our drive system. This shaft protector came out in 1998. I have sucked up one ski rope while at idle, waiting for the kneeboarder to get ready.

No bid deal, I pulled my plugs, grabbed the rope and had my wife turn the motor by hand at the PTO clockwise. It came right out. It took all of 10 minutes.

If you want to keep replacing the shaft protector, thats your preogative. They may only cost $12 bucks but all the work to replace them, every time you crack one, in my opinion is just not worth it.

I'm not sure what KustomKarl is talking about as far as the fiberglass. But, the shaft guard is only held on by a coupld clips and when removed, has no affect on the carbon ring and seal.
 
How to make money.....

Yeah you would think the Seadoo engineers know a thing or two about there engines and set-ups dude??? Replace the plastic tube....or you could suck up another rope and mess it up even more "engine" especially if you were to run over the rope at a good rpm. Or you could listen to "that guy" "you don't need to replace it"..

Yeah, your right, .......Seadoo R&D engineers know a lot about these engines. Thats why they are the best running engines on the market. But, I should point out, that part is not related to the engine.

At some point, there is some guy sitting around saying, "hey, we're making things so well, nothing is breaking, we're not making money on our parts". So, this guy comes up with the idea that we could put shaft protectors on, so when they crack from hitting a piece of wood or any other object that might be deflected, it cracks them. Then, the owner worries themselves to death trying to decide, leave it or replace it.

You see this all the time in the automotive industry. When my wife gets out of her car, the radio antennae drops inside the frame of the car. Sure, it's a way to protect the antennae from being broken by some kid. But, I'm not blowing the bucks to replace it, just to have it go out again (moneymaker). The cigarette lighters in the newer cars now have a fuse link inside them. If you plug a cell phone charger into it, it might pop a fuse. This fuse link is in the bottom of that ligher socket. You have to replace it if you want it to work again. Why couldn't they just put a fuse link on the outside of the wiring circuit? (moneymaker). The hinge and spring system they used on hoods back in the day worked well. I had an old truck, when I opened the hood, it would stay open while I worked on it; never fell on my head. My wifes Taurus has the new hydraulic pistons that are suppose to hold it open when I want to work under the hood. Well, they stopped working after the second year I owned the car and while changing the air filter, the hood dropped on my head. Since they weren't that big a deal in cost, I replaced them. Within a year, I lifted the hood, just to watch it fall shut again. Now, I use a stick to hold it up! Why did they change from a proven hinge and spring system, known for work for the life of the car/truck? (moneymaker).
I could go on and on about what these corporations do to make changes to things they found would last forever. If they last forever, their parts industry would go belly up. So, they make these designs on crap we don't need and what breaks easily. That way, we continue to replace it, paying them each time we do, and it's all profit for them because there could not have been that much money go into the development of that plastic tube........:rant:
 
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i do not post very often, but do a lot of reading of the threads. I must say that most of this thread is useless. The thread's creator wants to know how to fix it. One person stated that you must remove the pump. Other's debated and bashed Seadoo R&D for trying to sell more parts.

The point i am trying to make is that he wants to know how to fix.
So, everything down to the impeller housing will be removed, then you can get driveshaft out. This would be a good time to install new wear ring too!
 
Plastic protector = useless IMO but if you sucked up anything take a flash light and check the black/white wear ring and look for deep gouges. Agree to disagree about it but fact is fact. But if you're losing power and/or experiencing cavitation it might be the wear ring.
 
i do not post very often, but do a lot of reading of the threads. I must say that most of this thread is useless. The thread's creator wants to know how to fix it. One person stated that you must remove the pump. Other's debated and bashed Seadoo R&D for trying to sell more parts.

The point i am trying to make is that he wants to know how to fix.
So, everything down to the impeller housing will be removed, then you can get driveshaft out. This would be a good time to install new wear ring too!


I think you are missing the point. The original post'er asked about the driveshaft protector. We normally tell people to remove them since they cause more problems than they help.

BUT............


This thred was 2 years old, and the original Post'er hasn't logged in, in a long time. Please don't pull up old threads.
 
i do not post very often, but do a lot of reading of the threads. I must say that most of this thread is useless. The thread's creator wants to know how to fix it. One person stated that you must remove the pump. Other's debated and bashed Seadoo R&D for trying to sell more parts.

The point i am trying to make is that he wants to know how to fix.
So, everything down to the impeller housing will be removed, then you can get driveshaft out. This would be a good time to install new wear ring too!

Actually what is useless is you replying to a thread from a year and a half ago. I am guessing he got the info he needed back then.
 
I think this will become a major problem with the new updated forums. At the bottom of all threads it posts other threads that may be similar. Regardless of how old it is. I have seen a few the past week. I think people see them at the bottom and just reply without looking at dates.
 
Hey guys, Although this was an older post it answered my question. I was out this past weekend and ran over a kite in the middle of Lake Erie! Out of all the damn places a kite could be, I ran the thing over. At any rate, I was cutting the kite off the port side shaft and noticed the plastic pieces falling off. I wondered what the plastic piece were, as the starboard side shaft had one but it was chipped in a few spots. So in closing thanks for the posts and this thread as it seems to have helped me decide where the plastic pieces were from. And it does seem to be important but not an urgent piece to replace.
 
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