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2001 Seadoo Sportster LE. Just got it!

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Waterluvr said:
No, keep going those pistons aren't gonna unscore themselves.
Click to expand...

Ok. The middle screw came out like this with grease on the top
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There may be o rings under that threaded bolt end, that's the reason for the grease.

Standby, I need to grab a copy of that shop manual I don't have one on this machine.
 
You have a plastic dead blow hammer and a rubber mallet handy? Gently tap on the outside contour of the head to loosen the gasket seal from below and on the sides.
 
Opened.
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Both cylinders same condition. Pretty smooth and shiny, I touched by hand, couldn't feel anything.

What is the next step?

Edit: taking a break and eating a pear right now.

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Last edited by a moderator:
It looks like the piston edges have been working the same way a self cleaning oven has, lot of carbon has been burned off the edges. Head looks good, that's a really good start.

I'm looking at the SD parts diagram, they show an image that appears to be a caged wrist pin bearing so that's a plus
 
Is that some pitting in the cylinder walls? If yes, I blame this on corrosion.
Is there a ridge you can feel at the top where the rings reverse direction? If yes, this represents cylinder wear near the top.
 
Sportster-2001-951C-Stock said:
Is that some pitting in the cylinder walls? If yes, I blame this on corrosion.
Is there a ridge you can feel at the top where the rings reverse direction? If yes, this represents cylinder wear near the top.
Click to expand...

It sure looks that way, hopefully the next size up on the boring bar will take that out. ~He takes some seriously good pics!
 
This is PTO side. You can see 3 lines. And I can feel them too. Is the vertical one the ring gap?
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Mag side 3 lines. The top ring pitting line is deeper than the PTO side, the vertical line almost hard to see. I had to adjust the shooting angle to capture it.
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Your next step when you're ready is to slide the cylinders up and off the pistons. You need to break the seal of the base gasket and your plastic dead blow mallet is a good way to do this. Or a block of wood and light taps with like a one pound hammer around the base and corners. Be careful and avoid prying up on anything.
 
Did another check. Moved the piston to the top and push side ways by hand. It has about 0.030" play. And I can see the top ring stays right with the cylinder.
So the rings are not seized?
Same as the other piston.
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471.jpg



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Waterluvr said:
Your next step when you're ready is to slide the cylinders up and off the pistons. You need to break the seal of the base gasket and your plastic dead blow mallet is a good way to do this. Or a block of wood and light taps with like a one pound hammer around the base and corners. Be careful and avoid prying up on anything.
Click to expand...

Manual said you have to remove the rods/studs before remove the cylinder.
472.jpg



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