Tahatsu - 8 Hp 2-stroke leaking lower unit oil

[Jvoorhies]

I have a 90's 2 stroke 8-hp outboard and over the weekend I noticed lower-end oil was leaking from the water drain when I put the motor in the tilt-up position. I checked the oil level and about a 1/4 of the oil has already dripped out. I refilled the lower-end so I could use it.

What do you think the problem is and how much should it cost to repair?

 

[pvanv]

Re: Tahatsu - 8 Hp 2-stroke leaking lower unit oil

Are you talking about the water drain on the fwd of the unit? Often unburned fuel residue will masquerade as LU lubricant, and a "leak" is just that -- residue -- and not a leak at all. Was there any water contamination in the LU lubricant? If not, the LU may possibly just have been under-filled. If there was creamy water contamination, you want to replace the LU seals. Verify the model/serial. Parts are available if it is an M8B. If you are handy, you can buy the kit from any dealer (myself included): 3B2873213M LOWER UNIT GASKET KIT 8B $30.95. While you have the LU dropped, it would be a good time to replace the water pump kit as well; Part # 3B2873221M $42.47

 

[TOHATSU GURU]

Re: Tahatsu - 8 Hp 2-stroke leaking lower unit oil

And don't forget the service manual so you know what to do...And more importantly...What NOT to do.

 

[pvanv]

Re: Tahatsu - 8 Hp 2-stroke leaking lower unit oil

Right. And if you have an 8A, it's just plain too old to get parts.