Proper use of coupler hose for starting out of water

[Marcusknight23]

I have the coupler hose and I am wanting to start it out of water so I can diagnose a few things.

The manual says to also use a hose pincher on the outlet hose. Is this really necessary? I am thinking that is more for actual "flushing." I am looking more the have the engine running for a few minutes while I check things out at home with it running. Also when you turn on your garden hose from the house spigot, how far do you people turn it on usually?

 

[Jeffspx]

When i got my first seadoo years ago, I didn't use the pincher not knowing it was to be used and i never had problems. But that being said, once i found out a hose pincher was supposed to be used, i started using it and it made a big difference in how much water was flowing out of the top of the head and exhaust jacket.
It would probably be best to use a hose pincher.
Ive gotten away with using needle nose vice grips in a pinch, just dont smush the hose to the point of cutting it with the jaws of the vice grips.

 

[Dr Honda]

Pinching is for a hard flush. But depending on where your water tap is in the ski.... it may be necessary. Some of the early skis had the fitting on the exit hose, to the rear of the hull. In this case... you have to pinch it, to make sure water pushes forward, back into the engine.

Personally... I don't run skis on the hose. It's hard on the system. On your 94... it's not a big deal, since it has a seal pack on the driveshaft... but on your spark... running on the hose is an early death to the carbon seal. Also... without a load on the engine... it's very hard to actually diagnose any issues.