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They do nothing in our watercraft. These engines were designed with other applications in mind, not just watercraft. The anode would have some value if it was submerged in still water.

Just bore your nozzle.

The jetski community is one of the most widely varied, next to the motorcycle crowd. Both ends of the bell curve are well represented.

The X2 in that video has a lot of trim and power. Moving the rider back and finding a breaking wave will make up for lacking power and trim. Plus the ride is a lot smoother and drier.

Never, NEVER buy used jetski parts that you cannot inspect first. You will have better odds playing the lotto. Always use a CC for protection. I once bought a nice looking case and cyl on ebay, requested two boxes and payed extra for them. Sure enough one big box with case and cyl thrown...

If they only bored the 650cyl then crankcase pressure would be high due to the low transfer ports. Get some new OEM seals and try again, make sure the seals OD and the case is dry.

Just move the steering back 12-18 inches and find a wave.

A Skat 15 is the perfect load for any pump gas 650. Any more load will hurt low speed acceleration. The old straight pitch will vibrate a little out of the hole where cambered blades run smooth. An old Skat 15, 13-16 and 8-16 are about the same. A early 90s Solas KA-SC-A is also excellent. The...

It cuts the bending force between the mounts in half in hard water landings and takes out even more on a log jump. Since the new SJ was made for racing I bet that is what they had in mind.

A Kawasaki engine will fit easier than a Yamaha. You will need a custom tank and muffler. Bond in the engine mounts wherever they need to be. A 650 has a lot of room up front so you can use a muffler, unless you like the redneck ghetto exhaust.

It unloads that section of the hull during hard flat landings.

Theres no forest here, just a bunch of trees.

Wheres that Mr. Microphone when you need it?

If it only does it in a tail stand then your popoff is too low for the tank being over the carb. 16psi is awfully low, make sure the tank is fully vented and not holding pressure.

Nothing he does will help much until his pump load is corrected.

Pull off the spark plug boots and trim back the wires until you expose the metal core, gently pull on the center wire to make sure it isnt broken. Screw the caps back on and gap your plugs to .022-.025". Solid core wires will eventually break or the insulation will stretch leaving a gap at the...

Go find a leaf blower and learn the basics of carb tuning. Make it fourcycle at full throttle and slowly lean until it runs clean on the pipe. Make sure you have a low pitched prop. Stock flame arestors will probably help.

I have become picky about tune and performance. I know its easy to make a big custom engine perform worse than well tuned stock cyl. A lot of people have proven that, usually when they add too much prop along with that cool pump stuffer. BTW the groupk 845 runs good. Its more responsive than a...

I guess the shops can do well with enough advertising hype since this sport has such quick turnover. Buying an engine and having it work as expected is almost a matter of luck. There is always too much pump and carb tuning required to work with the customers existing parts and riding style.

Good luck junior.