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The line to the pump is the 'supply' line, it goes to the bottom of the exhaust manifold. If you put a dual supply line in you drill out and add a second fitting to the underside of the exhaust manifold (and add a few more holes to the manifold gasket) . The water then goes through the...

Single or dual carbs?

Just bought a 750 X2 that is turning out to be a bit more of a project than I thought it would be. At the top of the list is a crack in the interior water jacket of the head pipe, right above the exhaust manifold. There is even a small hole where a piece of metal broke away, about 1/16 inch in...

I admit I never tried an aftermarket pump, but the 'partial' cure on the 550s was to go to a total loss system with a lightweight flywheel. I went to an MSD on mine and the engine revved a lot more aggressively and it stopped pitching me off at WOT. It had a 440 pump on it, which moved a lot...

Holy resurrected threads Batman!!! For everyone wondering about this phenomenon, it is caused by the flywheel gyro-scoping and twisting the hull right over on it's side. It has nothing to do with balance of the flywheel itself; if you plot the various points on a spinning wheel that you then...

So I'm in the process of buying a slightly rough X2 where the current owner has the 750 e. box just strapped in next to the gas tank. My previous X2 was an '86, so it got me thinking: How hard would it be to waterproof the 750 electrical components or replace them with waterproof versions? I...

Loser05: Welcome to the hobby / sport... The first thing to put on to try to solve your problem is a scoop grate. A lot of the bounce that you feel is the boat coming out of the water, the pump sucking air and loosing thrust, just to slap back down and reengage. There is a sweet spot position...

My first ski was a 440 that I blew up and put an 550 piston port block into. (This was right when the reed valve PJS block came out and a few years before Kawasaki finally went to reeds. The 440 pump was actually the hot ticket for a modded 550 back in the day because the bushed design...

Back in the late 80s my buddy Kelly and I tied his 650 mod up to a dock near Mote Marine (in Sarasota, Fl) and were dialing in his new dual 44s. We were making a lot of noise and smoke (because the boat wasn't moving) and a Police Officer shows up and starts talking to us; asking us questions...

You can actually see water in a gas tank with a good flashlight or on a bright day. I have successfully siphoned out a small amount of water without dumping out the contents of an entire tank. lifting the nose of the ski a foot or so and tilting it on it's side makes it easy as the water will...

You can use a screwdriver to briefly and carefully jump across the relay terminals on the elec. box; the starter should hit if the battery is good. Next, unscrew the cap over the stuffing grommet where the start button leads enter the elec. box. Disconnect the start button leads and jump the...

The petcock is the fuel selector valve: on and reserve. The primer should be tapped into the reserve line as that is the last line to go dead when your tank runs empty.

The biggest downside is that it sinks. About 15 years ago I had an ex-racing X2 that had pump cavity exhaust done by a previous owner. I never had problems doing a tail stand (proper pump to cavity seal and rideplate to hull seal are all that is needed to cure the aformentioned problem) but I...

Most needle and seat adjustments on carbs have about 3 turns from closed to full flow. Ideally you'd like to have the carb jetted such that you are properly tuned at about 2 turns, which gives you lee-way in each direction to adjust for atmo conditions. Unless someone can give you more...

Check the signal line going from the crank case to the carb body and the check check valve on the gas tank. It sounds like you might not be developing enough fuel pressure. Bob

It's been a long time but... 1: Pressurized fuel from the selector switch 2: Crank case 'signal' that drives the fuel pump diaphragm (very thin piece of plastic in the stack) 3: Pressure occilations for the gas tank that work with the check valve to make pressure in the tank (goes to the fuel...