Trim piston stuck

[Beaur90]

My Yamaha 200 will trim up but the second it hits the 2 trim pistons it won’t go down anymore. Any tips?

 

[seasick]

First thing to try is checking the oil level in the tilt reservoir just to eliminate that.
After checking tilt up the motor until you can activate the tilt stop (lever that keeps motor from tilting down). Now tilt down (activate the switch) and see of the rods retract. If not, try lightly tapping the ends of the rods to see if they move.
I suspect that your system may need trim fluid or need the fluid replaced with clean fluid.
It could be other things of course but do the above first

 

[Beaur90]

First thing to try is checking the oil level in the tilt reservoir just to eliminate that.
After checking tilt up the motor until you can activate the tilt stop (lever that keeps motor from tilting down). Now tilt down (activate the switch) and see of the rods retract. If not, try lightly tapping the ends of the rods to see if they move.
I suspect that your system may need trim fluid or need the fluid replaced with clean fluid.
It could be other things of course but do the above first

One piston starts

First thing to try is checking the oil level in the tilt reservoir just to eliminate that.
After checking tilt up the motor until you can activate the tilt stop (lever that keeps motor from tilting down). Now tilt down (activate the switch) and see of the rods retract. If not, try lightly tapping the ends of the rods to see if they move.
I suspect that your system may need trim fluid or need the fluid replaced with clean fluid.
It could be other things of course but do the above first

when the locks are activated (motor trimmed all the way up) both pistons go down but when the motor goes down one of pistons won’t go down.

 

[seasick]

You still need to check the fluid level.
Since the rods retract when no load ( motor on stops) i would assume the trim rams are OK. What we don't know is if the issue is low pressure in the pump body, a problem with the motor to bracket axel or a problem with the tilt ram.

There is a pressure release valve located on the trim tilt assembly usually on the port side facing toward the side. It has a slotted plug that can be turned with a big screwdriver. Turn it slowly counter clockwise while watching your fingers and at some point the pump pressure will be reduced causing the motor to drop down assuming that nothing else is frozen
Just to cover all bases, put a small dab of grease on the tips of the trim ram rods. Just a little

 

[Beaur90]

I was able to get them down by trimming all the way up putting the tilt lock down, (motor stayed all the way trimmed up) then I trimmed down and the pistons went in. I did this a few times and eventually when I removed the tilt lock then the motor went down.

I think there probably is a deeper issue, went on a boat ride after I go it trimmed down. I didn’t really touch the trim fearing I would screw something up. But I’ll do some more investigating into the pressure valve, when I was turning it I got afraid it was gonna shoot out like a rocket so I just backed it back in

 

[seasick]

If the tilt system is low on fluid, air pockets will form. Just cycling the motor up and down can bleed the bubbles out but there has to be fluid in the reservoir to bleed completely

You might also have contamination in the oil that is causing a check valve in the pump body to not "check" and result in low hydraulic pressure

 

[Beaur90]

If the tilt system is low on fluid, air pockets will form. Just cycling the motor up and down can bleed the bubbles out but there has to be fluid in the reservoir to bleed completely

You might also have contamination in the oil that is causing a check valve in the pump body to not "check" and result in low hydraulic pressure

I’m gonna get some fluid today and try that, hopefully it will help the problem.