Join Date: Jun 2012
Thanked 0 Times in 0 Posts
Rep Power: 0
1993 2-stroke Yamaha - gear oil through weep holes?
It's been a long time since I worked on 2-strokes and it's showing!
This 1993 Yamaha 9.9 is new to me. When I examined the lower unit, I noticed that the housing just before the propeller was cracked. I replaced it, the bearings and all seals.
I then replaced the lower unit gear oil - when I did, not only did the oil come out of the top screw, but also out of two small holes, one on either side, just ahead of the top fill screw. So, after several attempts, I was able to get both top and bottom fill screws in and tight.
When I started the engine, gear oil was weeping from these holes. It has subsequently slowed, but it seems odd to me that any would come out.
So, is this a bad sign or is it normal? I am thinking that I may have to remove the entire lower unit and replace seals.
is there a .pdf manual available for this engine?