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Old 17 May 2005, 09:06   #1
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Tit & Trim problem

Our dive club has a Yamaha F100 AET four stroke outboard and we are having problems with the power tilt and trim. I am told that this is definately a hydraulic problem. The trim wont hold when running. We continually have to raise it to maintain optimum trim. It does hold when it is fully raised when the boat is on the trailer and is being towed. Local Yamaha agents have been no help. Does anyone have any idea what the problem could be? Is there any way to contact Yamaha Technical Division for help? Any advise will be appreciated. Thanks.
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Old 17 May 2005, 09:08   #2
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Tit & Trim problem
ooo eeer
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Old 17 May 2005, 09:10   #3
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Could try phoning Kevin Mole ( http://www.outboards.uk.com/ ). They know quite a lot about Yamaha stuff.

Tim
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Old 17 May 2005, 09:21   #4
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Have you checked the level of the hydraulic fluid? If thatís ok and the fluid is in good condition then itís probably the seals.
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Old 17 May 2005, 09:42   #5
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Originally Posted by slimtim
Could try phoning Kevin Mole ( http://www.outboards.uk.com/ ). They know quite a lot about Yamaha stuff.

Tim
Thanks for the contact. I'll ask our equipments officer to follow it up.

Eddie.
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Old 17 May 2005, 09:46   #6
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Quote:
Originally Posted by DJL
Have you checked the level of the hydraulic fluid? If thatís ok and the fluid is in good condition then itís probably the seals.

Hi Daniel,

I am told that the hydraulic fluid level is OK.

Thanks for your help.

Eddie.
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Old 17 May 2005, 10:29   #7
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What have the local yamaha agents actually done?

If the fluids ok and the caps on properly and its still slipping then I can't see there is going to be an easy answer. In which case it will need stripping and looking over I guess.
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Old 17 May 2005, 11:20   #8
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Quote:
Originally Posted by DJL
What have the local yamaha agents actually done?

If the fluids ok and the caps on properly and its still slipping then I can't see there is going to be an easy answer. In which case it will need stripping and looking over I guess.
We had another problem with the tilt last year. It was sticking in the full up position. We replaced valves etc to sort this out but this problem of dropping off the trim remained and in the last couple of months has got worse.
I have just spoken again to the local Yamaha dealer and he doesn't know what the cause or solution is and has given me the Yamaha Technical telephone number to speak to them direct.
We could strip it down and look for the cause but this would mean that the engine would be out of commission until any parts required could be ordered and delivered. Our boats are fully utilised at this time of year and we are reluctant to do this. We had hoped that we could determine the cause and order the parts, keeping the boat and engine functional until they arrived.
Eddie.
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Old 17 May 2005, 11:41   #9
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We had the same problems last year, both sticking at the full tilted up position and not holding the trim. The Yamaha dealer changed the valves as you mentioned, this solved both issues for us.
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