Avon SeaJet 320 Starting issue

PhilCl

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24 Jul 2023
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Hi Everyone,

I need some help and advice re a 2006 Avon SeaJet 320 ( 2 stroke) which wont start. In fact the engine wont turn over....

I used it some time ago ( as in months ago) it went fine, Went to look at it today , found the battery flat so charged it up managed to get it to turn over then nothing, Fuel is getting through, battery is charged and power is flowing as Blower, lights etc all work, but when you press the start button , nothing. Initially thought it was the kill switch so removed that , still nothing. Tried using a battery booster, no good.

So I did a bit of investigation, with the aid of a wiring diagram I found online. I remade all the battery connection's, checked out all the fuses ,they are fine, in general there is power flowing, but what I did find was there is no voltage at the start button terminals, chased the wires back and found that they feed via the kill switch from the red lead which was dead, and this appears to connect to a black box on the bulkhead ( appears to be marked emission control or something or other). Also the instrument panel is also dead.
The black box does have a screwcap marked fusible fuse, removed this and found nothing inside it. I looked on the wiring diagram and it lists a " Microswitch Start Protect", "Starter relay" and " Main Breaker" so I looked but couldn't find any of them. :-( . Does anyone know if these things actually exist and if so where they are ?. Or if there are other breakers / fuses somewhere ? Also if I run a new mains fly cable from the battery to the start switch and by pass everything else to see if this resolves the issue will I do any damage to anything else. I should mention I have only had the RIB since last year so as with all things this age it has " Modifications" made by previous owners ( I see evidence of these) and there is an amount of corrosion around connections but in the main it appears that the volts are getting everywhere but the start switch.

Words of Wisdom and Advice are greatly appreciated as Im a bit stuck as to next steps :-)
 
Hi Folks,

Here is a quick update....

After sleeping on the problem and then looking at the wiring diagram again this morning over my second coffee I decided to check out the wiring between the start switch and the kill switch ( this was ok!!) I then checked out the kill switch again and confirmed that the red wire feeds the starter switch, and confirmed that the kill switch was working ok..( basically it has 4 terminals in normal operation ( i.e with the cord in) 2 are open and 2 the closed, the closed two being the live and the start switch feed.
So I then decided to run a new power cable to the red lead on the kill switch and give it a go... Success the engine fired and run and the LED display worked. Hopefully this has resolved the issue and it will assist anyone else having a similar problem.

However if anyone can suggest where I get hold of a Workshop / Service manual for it I would be really appreciative.
 
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