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Old 04 March 2008, 14:26   #21
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Country: Ireland
Town: cork
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Make: HUMBER DESTROYER 5.8
Length: 5m +
Engine: 140HP sUZUKI
Join Date: Dec 2007
Posts: 262
Quote:
Originally Posted by BruceB View Post
This doesn't make sense, think there has been a misunderstanding or the service engineer doesn't know an outboard from a wheelbarrow! :-)
The trim is a ram that pushes the engine up away from the transom. It doesn't come back as valves stop the fluid returning. The force of an outboard at speed is pusing the engine back towards the transom and in case of any leaks or passing valves the outboard will only trim in. The only way it can trim out is if the pump is running to push fluid through the system and expand the piston holding the engine.
The most likely explanations are a short, holding the trim button in by accident or a leak/passing valve. All can cause the motor to trim In but only the first two can cause it to trim out.........
What do you mean by a passing Valve.

so the checks to do are
1. check the manual release valve to make sure its seated.
2. Check to see if there's a short in the trim wires.
3. make sure not to accidently press trim (but know this didn't happen.

after that what experiences have other suzuki owners had or has any of ye ever seen this problem?
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Old 05 March 2008, 03:59   #22
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Country: Ireland
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Originally Posted by ciaranp View Post
No not pressing bu accident.

it stays up until i get past a certain revs and then trim back in..

must check if manual release is fully closed if its not that don't know what it could be, its a strange one..
Hi

I had a Mariner 60 that used to trim out when I was under way . Turned out
to be a faulty trim switch which activated with the movement of the boat ( never gave a problem when the boat was on its trailer )
Replaced the switch and all was well . Maybe possible yours is faulty in the opposite direction .

Regards
Tim
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Old 05 March 2008, 08:16   #23
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Country: Ireland
Town: cork
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Make: HUMBER DESTROYER 5.8
Length: 5m +
Engine: 140HP sUZUKI
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Quote:
Originally Posted by rickuk3 View Post
With the engine stopped but ignition on trim the engine out and then slowly move the throttle to maximum and see if it trims in on its own.
Tryed this today.
Ignition on, trimed out. throttle push ahead to max, no move on engine.

Also with engine up a bit leaned down hard and no drop.

Looked at manual release looks ok, opened fluid and seems grand.

Maybe it was because i had it trimed out on take off instead of trimmed in.

Will see again the next day when i get out.
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Old 05 March 2008, 14:06   #24
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Country: UK - England
Town: Newcastle Staffs
Boat name: blue it
Make: ribcraft 7.5
Length: 7m +
Engine: suzuki df225
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on the optimax engines, if you are trimed out past the trim limit. ie on trailer
mode for running in shallow water say. if you then increase your revs past
2,000 rpm, then the engine will automatically drop back down into the trim range. I dont suppose this could be your problem.
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Old 05 March 2008, 15:29   #25
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Country: Ireland
Town: cork
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Make: HUMBER DESTROYER 5.8
Length: 5m +
Engine: 140HP sUZUKI
Join Date: Dec 2007
Posts: 262
Quote:
Originally Posted by Top banana View Post
on the optimax engines, if you are trimed out past the trim limit. ie on trailer
mode for running in shallow water say. if you then increase your revs past
2,000 rpm, then the engine will automatically drop back down into the trim range. I dont suppose this could be your problem.
this sound something similar.


Firstly new to these engines and ribs, getting up on plane.
Had a smaller boat with 15hp so just had to drop engine and off i went.

This is what i did:
Started engine set off up the harbour 1,000 to 2,000 revs, bow up so me not being use to it trimmed out instead of in, increased throttle past 2,000 revs and engine trimmed in towards transom, tryed trimming out again and the same thing happened. Then just thought this must be a safety feature on the engine that when you go past a certain revs if the engine is trimmed out too much it drops. maybe not but hope thats all it is.

i will do it the correct way when im out the next day and we'll see
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Old 05 March 2008, 15:48   #26
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Country: UK - England
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Sounds as though that could be your problem, keep a check on the trim gauge. when trimming out, making sure you stay within range. my last boat had the df140. superb engine.you should fly with with that set up.
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Old 05 March 2008, 16:09   #27
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Country: Ireland
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Quote:
Originally Posted by Top banana View Post
Sounds as though that could be your problem, keep a check on the trim gauge. when trimming out, making sure you stay within range. my last boat had the df140. superb engine.you should fly with with that set up.
ok thanks.
Got 40knots Sunday with 3 adults and 60 litres fuel
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