Slow drop on 1992 Pro 60

[JPJ]

I have a question and I would like to get some input on my problem. I have a 1992 Yamaha Pro 60 tiller. Every once in a while, I will tilt the motor up and ever so very slowly it will lower down. Any ideas on what the problem and possible solution(s) might be. Thanks in advance.

[rodbolt17]

how high is up?
how deep is a hole?

can you dig half a hole?

how slow is slow?

[JPJ]

Rodbolt,

If you are watching it after you tilt the motor in the most upright position, you can watch it very slowly sink lower about 12 to 18" in the course of a 5 minute span. I hope this info helps.

JPJ

[JPJ]

Might anyone have some insight?

[JPJ]

I am looking for some ideas on what the problem might be, Buehler ,Buehler, anyone?

[99yam40]

sounds like a valve leaking by internally, but if it does not do it all the time maybe it is trash getting into a valve

[JPJ]

Thanks 99Yam40,

I am gone this weekend, I will look into it when I get back home.

[rodbolt17]

you definatly have an issue.
reason I asked is I recently had one in the shop with a "leak down" issue.
seems it would drop about 2" over about 1 month.
kinda normal sometimes.

things to look for on yours
up main valve
up relief valve
manual release valve
trim piston orings
free piston orings