oil leak on lower unit

[strada]

I have a NS55B (Nissan) outboard and it seems to be leaking oil out of a small hole on the bottom of the lower unit.. This is my first boat and I have only had it three weeks and want to get it on the water.. It has a drink coaster size puttle on the drive way..The oil is clear with a light yellow tent and smells like machine oil. Its coming from a pin hole that is recessed in the bottom left of the bottom unit. The hole belongs there but why is it leaking? How can I find a manual on my outboard? Nissan dosent have my motor listed on their web site...<br /><br />Thank you for any advice you can give..

 

[steelespike]

Re: oil leak on lower unit

The hole is a drain to let water out of the exhaust leg.some times this will include exhaust residue.<br />More than likely that is exhaust residue.If the lower unit is leaking it will have water in it.<br />This will usually turn the gear oil milky.<br /> If you don't know the condition of the gear lube it should be checked before you use it.<br /> Also if you don't know the age of the water pump you should check it.If you are handy with tools these are relatively easy checks.You should get a service manual before starting any repairs.

 

[JB]

Re: oil leak on lower unit

Duplicate post. See Nissan trouobles.