Honda 90hp Outboard

[Snowballak22]

Hello All
What year is my Honda 90hp? I know this question has been beat to death but I can't find an answer searching through the forums. I believe its 1997 - 2000 but I can't say for sure. I know it was rebuilt with a new power head in 2010 and there is no serial number stamped on the engine block to the right of the oil filter. I do have the product identification number BBBL1004012. Thanks for your help

 

[ahicks]

Go here and type in BF90A where it says OEM part search

http://www.iboats.com/Honda-Outboar...1092042--session_id.320638712--view_id.268664

Establish your year and model number (1997 BF90AT) using serial number ranges (1004012)

You can confirm it's a 97-99 by the fact it's got a Mercury lower unit on it. If you look at the water intake, it's cast into the lower unit. If it were Honda lower (newer model 75-90's) that intake area would be plastic.

 

[Snowballak22]

Thank you for the info ahicks. Well I have another question. After doing some research I found that the water pump housing on my lower unit is square Part # 19221-ZW1-B01and not round like the 97Part # 19221-ZW-003. I tried to upload a photo but couldn't. I think I may have a Frankenstein motor.

 

[ahicks]

Maybe you know already, but the "square" pump housing is from a later model Honda lower unit, so you could be right. I'm pretty sure the engine blocks are/were all the same, so that rebuild may have been from an older engine.

One way or the other, as long as it runs good, it's a great engine. You'll just have to be careful when ordering parts!

 

[Snowballak22]

Well after installing the correct Water Impeller the BF90 runs great. The only issue I see is the cooling system indicator (pee stream) start out strong and then after about ten seconds it slow down to a slow trickle, the water never stops coming out of the indicator. I have read that when the thermostat opens the water stream slow down but never stops. Is this common?