Outboard Creeping Down

healerf18

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When my port Yamaha F150 is resting on the hydraulic trim rams, it gradually creeps downward until it is fully trimmed downward. I notice this in the driveway, but not when out fishing, etc. There are no hydraulic leaks anywhere that I can see and the fluid level in the reservoir never changes. Is this normal? Should I be concerned? The starboard engine always stays in position. Thanks!
 

DRIFTER_016

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Not normal.
You have an internal leaking seal.
You won't lose any fluid as it stays in the system but it leaks from one side to the other.
 

healerf18

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Thank you guys. As I suspected, but wasn't completely sure. Love this forum! :)
 

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