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Old 20 June 2016, 19:08   #1
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Country: UK - England
Town: Ashford middx
Boat name: Gale
Make: Ribtec 655
Length: 6m +
Engine: Yamaha 150hp 4stroke
Join Date: May 2015
Posts: 30
Trim up not working

I have a 2008 model 150 Ho Yamah outboard and I'm having a problem with the trim up on the hand control. I have taken the switch apart and there's no sign of corrosion,trim down is working an the trim switch on the engine itself is working up an down. The controls are only 3 years old so I'm thinking there must be a bad connection,broken wire.
I'm very very limited when it comes to electrics so can anyone help With any obvious diagnosis before I have to get the services of an expert an probably pay a fortune.
Appreciate any advice from this great site.
Regards Matt.
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Old 20 June 2016, 21:45   #2
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Country: Ireland
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Boat name: Independence
Make: FunYak
Length: 4m +
Engine: Honda BF10
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Hi, usually the wires for the hand control come out of the control box...
Look in there to see if a wire has come loose or corroded... If all seems ok, just for a test, you could swap the up/ down wire connector tabs to see if the problem is reversed, if it now works up and not down its probably the loom coming from the engine...
A cheap multimeter should help "bell" that out...

Hth
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Old 20 June 2016, 22:36   #3
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Country: USA
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Boat name: Vanilla Ice Cream
Make: Zodiac
Length: 4m +
Engine: 50 Johnson Outboard
Join Date: Apr 2016
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I just fixed the exact same problem, but my outboard is an Evinrude. No up from the controls at the helm, engine tilt switches were ok and worked. The trim switch on my control failed/wore out. On mine the switch has about a 3ft wire to the connector plug. I just ordered a new switch, took the control handle apart and replaced it and plugged it in. Took about 10 minutes.
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Old 21 June 2016, 03:00   #4
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Country: UK - England
Make: Humber / Phantom
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The trim switch on the handle is the weak point on the Yamaha control box. Very unlikely to be the loom especially at that age.

Undo the 12mm m8 bolt on the rear holding the handle on, tap the bolt to release the taper on the handle and the handle will come off. You can dismantle the handle and see that the switch is held in with a single machine screw. Hopefully at 3yrs old it won't suffer from broken bolts. A JIS no2 screwdriver is preferable to a Phillips as will grip the JIS screws better if they are hard to remove and a good idea to invest in one anyway.
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Old 22 June 2016, 05:06   #5
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Country: UK - England
Town: Ashford middx
Boat name: Gale
Make: Ribtec 655
Length: 6m +
Engine: Yamaha 150hp 4stroke
Join Date: May 2015
Posts: 30
Thanks everyone for your replies.
I didn't think of your idea Ron. That sounds simple an effective way to pin point problem. Boat is in storage at my friends till next week when I'm going to pick it up and will have a go at it then. Will post my findings.
Thanks again for your replies.
Matt.
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