Why does the motor body have a "trim switch" above the T&T (tilt/trim)

[stewfish1818]

1990 150 TXESB Modlel I believe

What is the trim switch mounted on the inside body of the motor just above the T&T (TILT AND TRIM). I rebuilt my T&T and the trim switch got messed up and moves freely now. I just pushed it back when testing the rebuilt T&T.

My manual gives a paragraph on how to set it but not why and what it does or when it should be set (low or high, etc) and you can barely understand what they are talking about. I am waiting for money to spend $80 on a factory manual. I assume they are way better and have lots of pictures and labelled diagrams compared to the multi-year manuals; is this true?

My assumption is that it tells the tilt when to stop so it won't trim the boat to lift up the back end and thus be digging the bow down into the water.

I assume the trim goes down and when the motor hits the trim tabs they go down. Or, does the switch need to be set at this point? I don't have one of those bars preventing the motor from going down to a certain point that slides across the dozen holes on each side of the body, it can go all the way and then I guess to the bottom of the T&T laying flat on it with the pegs in but I haven't tried.

The tilt and trim works fine but I haven't taken it down too far as I didn't know where to set it I can get the engine perfect 90 degrees well at least the cowling is flat/level. That's as far as I tested it out on the water with no problems.

What should I do at this point. Will it cause a problem, slam down on the T&T, ????

Please give second opinions to others

 

[HighTrim]

Re: Why does the motor body have a "trim switch" above the T&T (tilt/trim)

Re: Why does the motor body have a "trim switch" above the T&T (tilt/trim)

That tells your trim gauge what position the tnt is in. Most can tell by ear, but you obviously dont want to trim the motor out too much while underway.

 

[stewfish1818]

Re: Why does the motor body have a "trim switch" above the T&T (tilt/trim)

Re: Why does the motor body have a "trim switch" above the T&T (tilt/trim)

Hu, there is no spring so it doesn't bounce back to the beginning to reset, Weird; It just stays back. Anyway I just look at the engine cowl to determine my trim. I based it off of running at high speeds and trimming to the fastest speed to know where my best position for speed is and usually leave it around there all the time unless I want to beach it.

suggestions, or is this what you guys do?

 

[boobie]

Re: Why does the motor body have a "trim switch" above the T&T (tilt/trim)

Re: Why does the motor body have a "trim switch" above the T&T (tilt/trim)

That switch goes to your trim gauge and is the indicator to tell the trim gauge what position your mtr is in when running. I've never used them as I've always used the two things when under power that GOD gave me. My ears.

 

[emdsapmgr]

Re: Why does the motor body have a "trim switch" above the T&T (tilt/trim)

Re: Why does the motor body have a "trim switch" above the T&T (tilt/trim)

The trim sender is slightly adjustable, to vary the readings on the trim gauge on the dash. That trim system has two ranges of operation, the trim range and the tilt range. The trim sender gauge is designed to show the postion of that mechanism when it is operating in the trim range only. When set optimally, the gauge will be set to register movement in the entire trim range. When the tilt mechanism increases speed (goes into the tilt range) the gauge does not read any further "up." That sender should be registering the gauge in the full up position, then start to register downward at the point when the swivel bracket first starts to compress the pair of trim rams. When new, those senders should have a coil spring on them. That spring is sold separately. 511528, under $5. FYI, if you are running/idling the engine in the tilt range and throttle the engine up too much, the tilt mechanism can slam down hard-till the swivel bracket hits those two trim rams. It's not designed to carry much power in the tilt range-usually dead slow shallow water operating only.