Trim Up Button At Throttle Lever

[Splash]

Team,

There are many occassions when I am buzzing along on plane and I cannot trim motor up to 'sweet spot' - when I press on the little red trim up button on the throttle lever.

When at rest, I can always trim motor up - however.

Assistance would be great in troubleshooting this one...


Splash

[rayken1938]

Sick ram or pump? Any signs of leakage from ram?
Cheers
Ray

[Splash]

Yes, i think i see leakage from ram.

What attention should I place on this ram?

Splash

[Splash]

This red trimp up button is also permanently indented into lever - and seems like it has been pressed in too hard over a long period of time. When I want to trim up, there is no more 'give' in the button..

Thoughts?

[Roughasguts]

Maybe time for a new switch there Splash.
I'm thinking your switch can't handle the Amps when your trying to trim up' when under way, and under a lot of load.

But can handle the Amps when at rest.

Cheers

[Splash]

Thanaks Guts!

Sounds plausible.

Not too sure exactly what I need to replace - the external red button, switch behind this button (if any) or both?

Splash

[Roughasguts]

Mate can you prise it out and take a look ? or do you need to get at it from the inside ?

[Splash]

I'll have a play and report abck - thanks

[station-rat]

Splash
You will probally find the plastic that holds the switch in place has broken and the switch now pushes into the handle instead off moving the switch

[Splash]

Sounds like it.

Will this impact on current load (and not respond at tilt ram) when underway with heavy payload?

Splash

[Splash]

Guys, I cannot access this switch/red button.

Unit is fully sealed.

Do I have to remove whole throttle unit to access this swtich?

Splash

[station-rat]

You have to take the handle apart and place something behind the switch to keep it in place

[Roughasguts]

Splash I'm thinking you should be able to remove the handle where it pivots on the control box. Hopfully after you remove the lever it will become easier to remove the switch.

[jimbo59]

If it trims up at home its gotta trim in the water too, but i suspect your fluid is just running past worn seals in the t/tilt mech.

[Splash]

No can do.

Standby for photos...

SPlash

[Splash]

Jimbo - Where do I check for this fluid running past worn seals in the t/tilt mech??

SPlash

[Splash]

Photos...

I have removed the 'OMC' sticker and no screws/bolts observed.

I cannot see any fasteners on the black throttle lever that will allow me to split it in half so I can access the trim switch....

Thoughts?

Splash

[Roughasguts]

The OMC part looks like a cover you could prise that off to get to the bolt and remove the lever. And the switch looks like it is housed within a hood a snap type fitting hopfully you can prise that off gently with out breaking it.

[Roughasguts]

I got a better idea Splash, Get someone to hold the motor in while you trim it out, to simulate the load while under way. Maybe some rope tied to your trailer go easy though.

Just to see if the trim motor is running or to hear trim fluid cavitating in your trim pump.

You don't want to break anything just for the sake of hunting faults down.

[Splash]

Guts - that omc is a sticker - the plastic underenath is one piece.

i will try the motoro hold as well..

splash

[station-rat]

undo the control box from the boat and the screws are on the rear of the control box From the photo the switch appears too be in the correct position

[Splash]

Splash
You will probally find the plastic that holds the switch in place has broken and the switch now pushes into the handle instead off moving the switch

Guys,

I still need to fix this switch - irresepctive of what happens at the ram/motor end.

How can I remove this switch in light of the photos and apparent non-existant access to this switch information I have posted..???

Splash

[Splash]

Thnaks Rat.

Yes, the switch appears in correct position now - but when underway, the swithc remains indented/stuck for whole trip.


Splash

[FNQCairns]

Don't they just push in, ie they can pop out with the wires following? Not sure though!

Another thought and nowhere near as nice as replacing this switch is to disconnect it form inside and make your own switch eleswhere, you will need to remove the whole unit from the side of the boat though to gain acces to behind.

just a thought,

Would make a good test toward a diagnosis in the meantime though.

cheers fnq

[Splash]

I will attempt to remove control box now.. :-(

Splash

[Splash]

OK - removed control box.

To remove the throttle lever assy, i need to undo one hex bolt. I have used all of my allen keys that come close to suit this pattern but no luck. It seems this female profile is tapered in towards middle. Is there a special allen ky that suits this application?

Splash

[Roughasguts]

Have you got any vice grips? if you tighten the vice grip over the head of the screw there easy to un do, provided the head is raised of course and not recessed.

[FNQCairns]

If no vice grips or it's too tight anyway, might be time to sacrifice an allen key that you can file to fit for more purchase.

cheers fnq

[Splash]

No ready to sacrifice an allen key yet - don't think vice grips can fit in the clearance on outside of proud key.

I don't understand why no allen keys will fit into this hole....?

Splash

[Splash]

FNQ - u have a new PM........ :-)

[FNQCairns]

Nuh Splash, not me I dont!

[Splash]

Guys.

I have every size allen key in metric and imperial. The closest allen key is 3/16" goes in OK but does not want to grip the internal walls of this bugger. So, even if I do file down an allen key, I won't get anywhere...I don't think.

Have tried vice/multigrips/pliers - no luck.

How can I get this sucker out?

Splash

[FNQCairns]

Grind the head off, drill the head out? Just have to replace it with something else then.

cheers fnq

[deathstar 3]

It's not shaped like a star? Could be a torx drive.

John

[Roughasguts]

Can you get a flat blade screw driver in there with a good grip. If so then stick the vice grips on the blade of that see how you go.

Or you have any easy outs (screw removers) screw one of those in until it jams then wind it out.

[Splash]

may try the screw driver next......

link for easy out?

Splash

[Splash]

nah - not a torx star setup..

[Outsider1]

http://crustyquinns.com/tech/easyout.html

How about a photo of the screw before it possibly gets distorted/broken? Might be best to see if we can identify it first.

Cheers

Dave

[Splash]

ok - standby

[Splash]

photos...of female allen bolt profile (center).

Splash

[station-rat]

The center bolt should be a allen headed cap screw, undo 3 full turns, then with a small punch in the center of the cap screw give it a tap with a hammer until the handle slides off the spline. You will have too support the control box while you are punching the cap screw. When the screw is moved undo the screw fully and the handle is off

[Splash]

Thanks Srat.

Cannot move (undo) cap screw at all - even with a wide screwdirver to grip inside walls.

I cannot grip this screw in any way.

Splash

[station-rat]

Have you got a allen key that fits the cap screw properly
Are you trying to undo the right way

[station-rat]

Have you tried slipping a ring spanner on the allen key for a bit more leverage

[Splash]

Success !!

Banged an allen key in hard - and locked in.

Throttle assy now off control box.

Now, I still cannot remove switch - as top of throttle assy does nto want to come apart.

I have undone all screws I can see.


Thoughts?


Splash

[station-rat]

have you undone the screw under the top of the handle

[Splash]

SRAT - I cannot see these screws under top of handle...

Sploash

[station-rat]

What screws have you removed?

[Splash]

OK - I found them - and the holy grail!

I have reached the switch behind the red button.

This switch is a black rectangular box shape.

Holding this switch in place inside the throttle assy is only one screw with a molded plastic sheath. Very poor design in my opinion. >:(

This sheath has snapped (from repititous force of pushing trim button over 20 years) allowing the switch to sit not as tight as it should and hence allow button to become indented inside the throttle assy when pressed.

Now, my next problem is - do I replace plastic shrowd for throttle assy with new (I imagine very expensive) or try and glue this plastic sheath back and hope it stays in tact..?

Splash

[station-rat]

I found some plastic foam, that I fitted in behind the switch to hold it in place and has been no trouble now for over 12 months. Anything that will hold it in place and not conduct electricity. Foam packing or styrofoam

[Splash]

SRAT - Is this a common problem - single mounting bolts snapping off in the plastic molded sheath??

Can u elaborate where exaclty you placed your bit of foam and what type of foam it was?

Splash

[station-rat]

It was that dense black foam that they somtimes pack computer parts with. I placed it directly behind the switch. I suspect it is a common problem

[Dan5]

OK - I found them - and the holy grail!

I have reached the switch behind the red button.

This switch is a black rectangular box shape.

Holding this switch in place inside the throttle assy is only one screw with a molded plastic sheath. Very poor design in my opinion. >:(

This sheath has snapped (from repititous force of pushing trim button over 20 years) allowing the switch to sit not as tight as it should and hence allow button to become indented inside the throttle assy when pressed.

Now, my next problem is - do I replace plastic shrowd for throttle assy with new (I imagine very expensive) or try and glue this plastic sheath back and hope it stays in tact..?

Splash

Splash i replaced one about 3 years ago,the switch come's complete with new side cover,mine was about $120.Yes it is a very poor design and the new replacement one is still the same type........so no improvment from brp.What i did was fill in behind the switch with areldite glue to give it some ball's,maybe you could fix your's the same way without replacing it.

Dan.

[Splash]

Thanks Dan5. Waht a pain in the BUTT!

But, as you say, glue it in and pack foam behind it (Station RAT) for optimum result...

Splash

[station-rat]

No need for glue --just pack behind it for support, and if you need to remove it later it will be no problem

[Splash]

Thanks - having trouble finding some hard foam around the place...

Gotta keep looking.

Splash

[Roughasguts]

Hard foam, Old thong!....... No the foot wear thong.

[station-rat]

Yes that will work too

[Splash]

All done.

Used a thong and unused computer part packing foam.

Everything is back together with trim up button now happily protuding where it should be :-)

I will report findings after my next run.

Thanks guys - for another fun thread :-) 8-)

Splash