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| Author |
Message |
    
jerry perry
New member
Username: mercman57
Post Number: 1
Registered: 06-2009
| | Posted on Tuesday, June 23, 2009 - 12:21 pm: | 
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I have a 90hp mercury o/b. Won't trim at full throttle so I can plane the boat, however at low speed or stop position, it will trim. I don't know where to look for or how to check the fluid level or even if this is my problem. Anyone got an idea? I is a 2004. thanks |
jamie campbell
Advanced Member
Username: outboard_doctor
Post Number: 444
Registered: 02-2009
| | Posted on Tuesday, June 23, 2009 - 09:11 pm: |
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Check the manual tilt release screw on the stb side of the transom bracket it might be loose |
jerry perry
New member
Username: mercman57
Post Number: 2
Registered: 06-2009
| | Posted on Wednesday, June 24, 2009 - 12:32 pm: |
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will do, let you know the out come, thanks |
Benjamin Jones
Advanced Member
Username: benjamin_jones
Post Number: 264
Registered: 04-2008
| | Posted on Saturday, June 27, 2009 - 03:41 am: |
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Hi there,
When you open the throttle, you are pushing up to 90 horses there, the small trim motor will not, easily, lift the bow. It should be able to trim the bow down as the motor's power will naturally assist the trim motor.
It's not a good idea to trim the bow up when under throttle as the trim motor cannot fight those 90 ponies.
Then seals could be shot in the trim pump, poor electrical connectivity [read: voltage drop] in trim loom, open release valve as Jamie suggested?
Does motor sag when trimmed up on the trailer? If so, it's a pump issue. Seals, release screw loose or low oil.
Happy boating!
We've hit 0' celcius here today... And it's almost 10 AM...
So, in short, it'll take some trial and error as to where you want to trim the motor before taking off and tuck her in as she starts to plane. |
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