'89 40hp Evinrude Power Trim

[Mark R Groves]

My power trim on my '89 Evinrude 40hp works OK for the most part. Typically, when I use my rig I start out with the trim close to completely down and trim it up to the maximum trim/maximum speed position. However, aftter a few minutes running at full speed the motor will push back down to a lesser (slower) trim angle. While it only takes a quick push of the button to correct this, it's getting annoying. So my questions are... Is this normal or is it a symptom of internal leaking in the trim cylinders? Assuming this is a symptom of leakage, what is the usual remedy? Complete rebuild of the cylinders? Any advice is greatly appreciated.

 

[DJ]

Re: '89 40hp Evinrude Power Trim

McG,<br /><br />Has this symptom been there since new?<br /><br />Are you sure you have power trim and tilt and not just tilt.<br /><br />Otherwise, it's probably an internal leak in the valves.<br /><br />Also, check to make sure your manual release screw is tight (right side) and make sure the unit is full of fluid.