Hi,

While in the Park Rapids this week the internal oil reservoir on my 150 decided to croak on me, which was pretty surprising.

Is this common, as the design of the internal reservoir, especially the cap, does not look very good to me (I am no mechanic)

Any suggestions for a certified Mercury mechanic near Woodbury, MN ?

Pal

Shakopee Marine does a fine job, in Shakopee though

...but did spring a little air leak at the fill cap when my Opti 150 was 4 years old. I only noticed the issue while changing the fuel filter- I noticed the oil was about 1/4 inch from the top rather than completely full. I idled the motor and cracked the cap a bit to allow it to fill- but a week later it was down 1/4 inch again. I took a close look at the cap and found the little oil ring that seals it was almost split through. The dealer ran my motor up on the parts listings to find the o-ring P/N- but we found you could only buy the o-ring with a complete new reservoir. The dealer did find an OMC o-ring in his stock that fit just fine which he gave me for free. The problem was solved with the new o-ring.
Doug

It is definitely the seal between the cap and the top of internal oil reservoir. The Merc dealer in Park Rapids did not have a replacement reservoir, so I am back in the TC looking to get it replaced. I am not sure a new o-ring will do it myself.

Pal