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Old 24 June 2013, 07:54   #1
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Intermittent down trim

i need a little help.

My 1993 60hp mercury engine is suffering from the above. It trims up fine.

Any advice gratefully recieved.

regards

Buzzin
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Old 24 June 2013, 10:15   #2
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just a bit more info.

I put a new throttle assembly (not for this reason) on the boat last year and it still does it on both switches (one on throttle and one on engine)
Could it be a relay????
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Old 24 June 2013, 10:32   #3
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Hi, Mine did the same thing last year on my mariner, I disconnected the pump wires , and tested with 12v battery , To try and eliminate a pump fault , But found the pump was faulty.it was crud in the internal reservoiur blocking a valve.
you van also just test the relays with a multimeter.

Where in the NW are you? , I Could help if Local
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Old 24 June 2013, 10:43   #4
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Rochdale
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Old 24 June 2013, 13:24   #5
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my guess is the relays - had same trouble on my mariner 75. theyre 15quid each on ebay - i replaced all three (one is for starter) and never had another problem
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Old 24 June 2013, 22:10   #6
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Has the same problem on my Suzuki DT200. Changed the relays and still had the problem. Looked closely at the pump wires and found the insulation had been stripped of a little near the pump end. Repaired it and no more problems.
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Old 24 June 2013, 22:55   #7
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Thanks to all

Will check wiring and if necessary change the relays.


Cheers


Buzzin
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Old 01 July 2013, 16:49   #8
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Can someone point me in the right part number for the relays if possible. Any help would be much appreciated
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Old 01 July 2013, 17:07   #9
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my 75 had these 67-729 Mercury Mercruiser Solenoid Relay Tilt Trim Switch 89-818864 | eBay
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