Power Trim Tilt Tbl

I have a 2001 F80TLRZ that is giving me tbl with the tilt trim.
The motor will drift down and when underway I have to keep retrimming
the motor. I have changed out both valve assemblies. Any idea's ?

power tilt trim tbl

The fluid level is fine and the manual valve is tight.

Tilt Trim Tbl

When checking the oil level should the unit be vertical and fill with oil to the top of the fill plug? or should I tilt the unit as Horiz. as possible?

Trim & Tilt Fluid replacement question

I have a 2000 150 Yamaha 2 stroke that needs Tilt and Trim fluid...is there a diagram with instructions that I can see to do this myself?

[surestrike]

use your manual release valve not motor
release valve lower motor. lift motor.
do this twice.
lift motor just above where you would take your motor to put it on swing down lug.
now fill reservoir
put cap back on
lower motor and raise twice
top up fluid
leave for an hour
same proceecs reason why not to use motor it airrate oil
hope this helps