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When you have an air leak, it runs very lean. Lean means that it's also running hot--hot enough to get the carbon particles inside the combustion chamber to glow. The glowing particles ignite the...

This discussion is going off the rails, so to speak, and should probably be in the Open Discussion section of the Community forums. I decided not to post it after I wrote it last week, but then I...

Yes, it sounds like the driveshaft holder is cracked. Take it out and take a good look at it under light. Flex it and you'll probably see cracks in the rubber.

Happy Easter to you, Chris!

If the leak is from the aluminum part that is glued behind the driveshaft seal, yes, you can use 5200. If the driveshaft holder (the black rubber donut) is leaking,...

You can't 'patch' the driveshaft seal. The 'holder' is what Kawasaki calls it. It's just a rubber donut that the bearings and seals sit in. It splits with age and leaks. Normally, you would just...

You'll have to test the pop-off valves. They should open at about 4-5 PSI.

That's not a Kawasaki part. Looks like a lead from a remote start switch or something.

If you're going to work on this 'Ski, you MUST have a service manual! This engine differs significantly from other PWC engines, and you can do major damage if you don't know how to work on it. Do...

You didn't fill it up on St. Patrick's day, did you? ;)

I've finally had time to build a couple of sets of these pullers to rent. They take too much time to produce a large number of them, so they are not for sale.

I've made several variations of...

I like the idea of a quiet PWC. I like the idea of an environmentally clean PWC. 2-strokes are dirty, 4-strokes are clean. I remember when the world really was polluted--and we've really cleaned...

Welcome aboard, iharvey7!

So you bought a 2007 Kawasaki Ultra 250 JetSki, correct?

I hope you didn't pay much for it, they were the worst 'Ski Kawasaki ever came out with.

The biggest...

Its FI not f1 which stands for fuel injection which means that there is a problem with the fuel injection system the fuel injection system consists of many parts that can be diagnosed using the above...

Yes, just pour the lacquer thinner directly into the tank.

Here's how to secure your oil lines: http://greenhulk.net/forums/showthread.php?t=286584

Be sure to pre-fill them before you...

Do you carry a spark plug wrench? If so, you can remove the plugs and it will be easier to turn the crankshaft backwards, which make it much easier to remove a rope. You can grab the driveshaft...

Don't put the cover on for towing!!!

I've tested a couple units according to the procedure in the service manual and never got the results listed. However, the units worked fine in use. I think testing them with an ohmmeter is a waste...

I doubt that a charger like that will generate much heat. The battery is kept fully charged almost all the time. A maintainer will let it discharge and recharge it periodically, but you probably...

No problem with removing them--until you flip it upside down!

Then it will instantly flood your 'Ski and possibly sink it.

You may be using too much water pressure. Too much can flow backwards through the exhaust and back into the cylinders (at least this can happen on a Kawasaki, I'm guessing that the SeaDoo works in a...

The fuel pickup had a lot of problems and new ones are not available. I made a new one:

http://greenhulk.net/forums/attachment.php?attachmentid=471705&stc=1

I will run the On and Reserve lines...

Everybody has an opinion on this. My opinion is to leave the oil injection system in place, here's a number of reasons why:

The oil pump is the most reliable part of the boat. It doesn't fail, the...

After towing with the plugs out for many years, I finally lost my first plug about 2 months ago. The 'Ski had not been towed on the highway for a year, just a mile from our lake house to the ramp. ...

beerdart spliced a SeaDoo hull to the bottom complete with 4-tec engine. Very interesting conversion, and he did a very nice job which you can see here: ...

I had a chance to buy an SC a couple of years ago for $800, but passed on it. I'm kicking myself now...

I've been eyeing this Jet Mate for years. It's been in storage at the mobile home park...

Yes, it has a joystick for steering and a trigger throttle. The stick folds down in case you go flying 'over the bars', also useful for when you put a cover on it. The seat also folds flat.

This...