Winterizing an Outboard


Old 11-14-07, 01:02 PM
Thread Starter
Join Date: Nov 2007
Location: Eastern Ontario, Canada
Posts: 2
Winterizing an Outboard

Hi I have a 1989 Mercury 40 HP outboard (1st year I have ever had a boat). In Sept. I noticed a large oil leak from the Prop area and subsequently had the seals and O ring replaced . When I took the boat out of the water, at the end of the season , Oct 14th, I noticed a small gear lube oil leak again; about 1 ounce I'd guess.

Question; should I drain the lower unit again before freeze up, to make sure there is no water in there? Secondly, is that amount of seepage normal, or should I again replace the seals, O ring?

Many thanks
Sponsored Links
Old 11-14-07, 01:55 PM
Join Date: Jan 2007
Location: Central Indiana
Posts: 389
Draining the lower unit and refilling is a LOT cheaper than cracking the lower unit due to a freeze-up. It's a good habit to always drain and refill the lower unit the last time it comes out of the water for the season.

Why replace the seals and o-rings again? It didn't seem to help the first time. I wonder if the shaft is slightly worn under the seal lips and that is why the repair is leaking.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Display Modes