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Old 13 April 2018, 00:49   #1
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Country: Other
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Boat name: ribjet
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ribjet info

Hi folks, can anyone out there tell me if water is supposed to "pee" from the back portside transom when it is running in the water like it does when you flush the motor when it's on the trailer on my nautica international model 10 ribjet with the 700cc yamaha motor? Also, how do you know when the motor is running hotter than normal ? There is no heat gauge on this unit. thank you in advance for any & all help !
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Old 13 April 2018, 02:11   #2
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Country: UK - England
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not an expert but if when you flush you have water coming out the pee hole [tell tail] that same tell tail will have water coming out when at sea. that water can get quite warm when in use. temp gauge wise not seen any on any of my boats [outboards] but my suzuki goes into safe mode [runs at tick over] if the water inlet gets blocked. others will be along who know more.
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Old 13 April 2018, 08:13   #3
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Good morning to you & thank you for the reply. would you please explain to me what you mean by "tick over"? Also , are you talking about an outboard motor because my motor is an inboard yamaha jet motor. Thanks again !
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Old 13 April 2018, 08:50   #4
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Tick over is when any engine is running without the throttle being used to increase the engine speed (low RPM )around 850 RPM
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Old 13 April 2018, 11:32   #5
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Thanks for the explanation about tick over, i had never heard that term before.Does your explanation of the tell tail on your outboard apply to my inboard yamaha jet motor also?
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Old 13 April 2018, 13:00   #6
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https://www.yamaha-motor.eu/uk/produ...turestechspecs

Not sure if you have same engine but these jet skis have water cooled engines which have a visibility spout shooting upward so they can be seen by the driver so yours will be coming out of the transom I would have thought. You would have to read your manual to see if it has the shut down feature
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Old 13 April 2018, 17:35   #7
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Yes the tell tale shows you the coolant system is working. Water from jet pump is diverted through a strainer around engine and out of exhaust and a small outlet. There is a T peice that feeds the cooling lines your motor is likely a 701 same as the superjet but modified for boat use (Avon used the same power plant in ribs) the superjet manual of same year should tell you most of what you need. The flush port Is into the T between the pump and motor and tell tale is the output of motor (some also have a thermostat controlling flow out of the head).
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Old 13 April 2018, 20:20   #8
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That helps alot, Thanks !
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