my 40 hp johnson ob on a pontoon boat. The trim allows the engine to go up, but it wont go dow. Is there a manully way to lower the ngine??
Hello, welcome to JustAnswer.In most cases there is, but I need your modle number and year to tell you where yours is.
dont know year or modal #, but serial # XXXXX===517022348
Can you get me close on the model year, at least?
In the diagram below the manual release valve is number 8. Notice the snap ring (#32) Your manual release valve will have that same snap ring. It is there to keep you from backing the valve all the way out, which would spray you with oil. In the top of #8 is a slot for a screwdriver. support the motor and back that out just one turn, then move out of the way and remove the support. The motor will slowly lower down. Tighten the valve up before starting the motor.
good try. it was to confusing for me to grasp, the print didnot show where all the #s were. not much help for my prob
Really? You cannot see the numbers on the diagram I posted?
Mike; FORGET IT TO MUCH WORK FOE ME, PLUS THE BOAT IS IN THE WATER. and I dont know where the diagram is located. I will take the boat to a mechanic. its a pain in the ass, but he will find the problem. thanks but your answer didnt help me.
All you have to do is attempt what I told you. it really is quite easy. I have posted the diagram below again, you can print it and take it with you. down to the boat. The boat will have to be out of the water to use the manual bypass anyway, so once you get it trailered, try it out. What harm is there in that?
lets try again.. where on the motor are the parts shown on the motor. shaft ? under cowling? I have no clue just looking at your diagram.
These would be on the motor, on the side facing the back of the boat, just below the mounting bracket.
one more try.... do youhave apix that shows the area we are trying to fix?
The whole trim pump assembly (the first diagram) fits snuggly under part number 1 in the diagram below.
Parts numbered 23 and 27 are the brackets holding the motor to the back of your boat the trim pump is between them.
If you were in the boat and were to stand to one side or the other, and look at the motor you will see the trim pump from inside the boat. The trim pump is literally right below the piviot point of the motors up and down axis. The manual valve is in the base of the trim pump.
no diagram showed up with your reply
what if any plates must be removed to acces the manual releife valve (#8) ? or is the valve (#8) visable . Im trying hard to gwet this solved. thanks for sticking with me
It should be visible, but remember that I didn't have your model number to go by when picking the trim pump to use as an example. The key is the snap ring inside the opening where the screw is. The manual relief valve is the only one of the plugs you will see with the snap ring just inside the opening.
i think model # XXXXX XXXXX were getting there
I was correct is picking the most common one. the diagram you have is correct to a T. So yes, the valve will be visible.
You will see two caps that unscrew with what appears to be a shallow hole between them. The hole is where the release valve is. It just requires sticking a well fitting slot screw driver in there and turning counter clockwise. This may be hard to turn at first. it's going to be snugged down good and tight, but even pressure will turn it. Remember, just one turn counter clockwise and no need to remove the snap ring
12 years Certified marine mechanic, performance boat builder
i think you did it thanks james. sorry i was so slow in grasping your responses
Don't be. It is almost always my fault when this happens. I forget that most folks are not as familiar with these things as I am. I appreciate your patience with me. And thank you for that bonus, it is truly appreciated.