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Old 24 February 2013, 13:44   #1
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Mariner Optimax 125 PTT Problems

My engine is trimming itself up and down and needs the power cut to it to stop it, booked into local dealer to get it sorted as its only 10 months old so still under warranty, anybody an idea what it could be?
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Old 24 February 2013, 13:48   #2
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My engine is trimming itself up and down and needs the power cut to it to stop it, booked into local dealer to get it sorted as its only 10 months old so still under warranty, anybody an idea what it could be?
Trim sender unit.
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Old 24 February 2013, 21:15   #3
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Sender unit? How would that power the pump motors?

I'd guess either a flaky switch (there are usually 2 of them - one at the helm and one on the motor itself) or a chafed wire or two.

jky
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Old 25 February 2013, 15:29   #4
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Wont be a sender, probably a dodgy trim switch, or relay.
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Old 25 February 2013, 15:51   #5
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Sender unit? How would that power the pump motors?

I'd guess either a flaky switch (there are usually 2 of them - one at the helm and one on the motor itself) or a chafed wire or two.

jky
The maiden voyage on my rib my Etec 60 engine trimmed up on its own and kept running even with the ignition turned off ,so I had to turn off the isolator switch. I had it fixed under warrenty and I'm sure my dealer said that they had replaced the trim sender unit.
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Old 25 February 2013, 16:01   #6
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probably a dodgy trim switch,
+1 for the trim switch - mine was the one on the throttle control - it happened 20 miles from home and I had to shut that engine down as it kept lifting out of the water

Way to go for a twin set up
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Old 25 February 2013, 16:23   #7
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Will hopefully find out tomorrow. If i held the switch down opposite to what it was doing by itself it stopped, so if it was trimming up i trimmed down and that stopped it until I let the switch off again. Pain in the butt as I had a lot planned for the weekend.

Thanks for the replies
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Old 25 February 2013, 16:28   #8
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I'd try pulling the trim relays....at least then it won't trim anywhere!

Or at least pull one at a time to try and find the problem....
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Old 25 February 2013, 16:30   #9
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Will hopefully find out tomorrow. If i held the switch down opposite to what it was doing by itself it stopped, so if it was trimming up i trimmed down and that stopped it until I let the switch off again. Pain in the butt as I had a lot planned for the weekend.

Thanks for the replies
You can try disconnecting the switch on the engine and see if it still does it. They are normally connected with a deutsch type connector, if it still does it try disconnecting the connector that will come from the remote control this should also have a plug that can be disconnected. if this stops it then try reconnecting the engine cowling switch if its stopped then problem found and you wont invalidate you wty in doing so.
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Old 02 March 2013, 02:51   #10
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Trim Switch, will be fixed for next weekend
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