Logo
FULL SITE MENU

Loose tube in lower unit?

N

Nhall

New member
Hello, thank you for allowing me to join. I have a 2005 Honda BF50A outboard, was changing the water pump and while dropping the lower unit down, a short metal tube fell down. I have no idea where it came from, does anyone know what it is and where it goes? This is a very low hour engine and I’m the third owner, my first time changing the water pump.
 
The tube.
 

Attachments

  • IMG_4406.jpeg
    IMG_4406.jpeg
    585.4 KB · Views: 34
  • IMG_4405.jpeg
    IMG_4405.jpeg
    565.4 KB · Views: 36
Hi Nhall,

Welcome.

I honestly don't know. Never worked on a 50 A.
But, that looks suspiciously like one of the screw/bolt spacers.
(Honda calls them collars)

See items 52, 53, 54 and 55 in the link.


While dimensions are given for 52, 54 and 55, I tend to think 53 (labled as being for the water screen but no dimensions) could be the item even though it doesn't look long enough to match your photos.

Just tossing it out there for your consideration.

Good luck.
 
I have my 50 apart right now... l didn't see anything like that...i did notice that my lower unit has a breather tube that sticks straight up to get above water line I am guessing... none of my other Honda's have this breather
My lower unit is at my other shop so I can't look at it ... but the rest of my 50 is here .... I will have a look tonight and report back.
A pic of the above view of your lower unit may help
 
siscoken said:
I have my 50 apart right now... l didn't see anything like that...i did notice that my lower unit has a breather tube that sticks straight up to get above water line I am guessing... none of my other Honda's have this breather
My lower unit is at my other shop so I can't look at it ... but the rest of my 50 is here .... I will have a look tonight and report back.
A pic of the above view of your lower unit may help
Click to expand...
Thanks for your reply, I will check tomorrow and see f the previous owner had dropped a collar when putting back the bottom cover on, not sure it’s called a cover that’s above the lower unit and below the engine.
 
Nhall said:
Thanks for your reply, I will check tomorrow and see f the previous owner had dropped a collar when putting back the bottom cover on, not sure it’s called a cover that’s above the lower unit and below the engine.
Click to expand...
I have my case extention on my shop floor right now and I looked from top and bottom and I see nothing that resembles that piece.... I am really leaning towards your vent tube... so a pic would help.... if I had my lower unit here I could examine mine.... but I will likely be there in a couple days
 
siscoken said:
I have my case extention on my shop floor right now and I looked from top and bottom and I see nothing that resembles that piece.... I am really leaning towards your vent tube... so a pic would help.... if I had my lower unit here I could examine mine.... but I will likely be there in a couple days
Click to expand...
 
I think you found it ... but does not explain how it ended up inside the housing...it is an exterior plastic trim cover.... I did a quick measure and if that is it it needs to be 1.6 inches long... mine did not have those that I can see or maybe it fell unnoticed when I removed mine of it was lost if previous owner had appart
 
siscoken said:
I think you found it ... but does not explain how it ended up inside the housing...it is an exterior plastic trim cover.... I did a quick measure and if that is it it needs to be 1.6 inches long... mine did not have those that I can see or maybe it fell unnoticed when I removed mine of it was lost if previous owner had appart
Click to expand...
Tho with some bad luck when the cover was removed it could of hit a hole in one here at the pass thru hole for shifter rod
20241114_193850.jpg
 
Back
Top