We've got an AVON 346 jet RIB as a safety boat and recently it has started to cut out occassionally, then it can be restarted straight away. It's a sudden cut out - like maybe electrical? but when I contacted AVON to get a service manual to try and trace the fault they told me that there never was one for this model. It's fitted with the Yamaha 63hp oil injected 2 stroke engine. Has anyone had similiar problems? and how was it fixed?
It tends to happen at full speed. We have checked the spark and it appears to be very weak. I'll have to ckeck further into this. I will also have a careful look at the fuel line. What is annoying is that the boat was O.K. until we had it serviced! - the problem has only been since then. (don't really want to take it back to the service agent as they are 200miles away!).
Sounds nomal to me most things go wrong after a sevice ring the dealer and
have a go at him not saying he has done some thing to it but thats my bet
my truck was ok for a year went in to main dealer and lots of over heating
problems after why did they charge me for changing the antie freeze on a year old motor ???? don,t think they bled it after the change
We had exactly the same symptons, and it was due to fuel starvation. The fuel line as it exited the engine into the fuel filled heavy bulb was flapping and kinking the line against the plastic protective wrapping, fitted by the manufacturer. We noticed that as the engine cut out the bulb had effectively collapsed as the engine sucked it dry ... and obviously the line below was kinked stopping more fuel in to replennish that used. This was only apparent when we threw the boat around lots causing the bulb to swing about, or at top speed when the bulb was blow by the wind causing the kink. The fix was very easy, we just moved the plastic wrap and tied the bulb up so it did not flap. The stopped kinking and hence fuel starvation. I hope you problem is as easy to solve. See diagram attached.
)
