SOHC.co.uk Forums > Project Board

New (to me!) '77 CB400F - US model

<< < (41/80) > >>

mattsz:
David Silver's US site sells just the strainer and o-ring, as well as the whole petcock:

https://www.davidsilverspares.com/CB400F-SUPER-SPORT-1977-USA/part_163258/

Interestingly, though, his UK site only lists the complete unit.

Does anyone know how this thing is supposed to install?  Does the strainer just insert flush into the tank opening, then the o-ring drops into the petcock fitting and you just tighten it up?  That's how I found mine, except the o-ring was wedged beneath the big retaining nut.  Could be it just forced its way in there over time?

EDIT: DSS lists two different "genuine" parts at two different prices.  Huh.  One of them has a good photo showing the inside of the retaining nut:



I'm guessing that o-ring isn't meant to retain that strainer, if it was it would probably restrict flow to the reserve opening.  But it does look a bit like the strainer is meant to stay attached to the petcock, which mine clearly didn't...

Or, do you drop the strainer over the tube, then slide the o-ring over the strainer, so that the open end of the strainer is held captive by the o-ring down inside the retaining nut?

EDIT x2: That pic doesn't show the strainer... so I'm still not sure how it's supposed to go...

Bryanj:
Just recently done a cbx 550 so i can definitively tell you that if you do not want a leak the strainer pushes into the petcock then you fit the washer/O ring before fitting the assembly to the tank

Nurse Julie:
Yep, same as the 400/4 then Bryan.

mattsz:
I'm sorry guys, but I'm just not clear on how this thing is supposed to be configured.

When I removed the petcock, the o-ring was stuck beneath the threads of the retaining nut, and the strainer remained tightly stuck in the tank opening, perfectly flush with it.  It was a tight fit between the little collar on the open end (which is how the gasket is supposed to hold it in place?) and the tank outlet.

[ Guests cannot view attachments ]


I needed a sharp 90º pick tool to reach in and hook it and drag it out.  As far as I know, the petcock was working and not leaking, but it sounds like that is not the correct arrangement?

Now this photo shows the how the strainer lies in relation to the reserve opening when the petcock is on its side; it fits loosely enough on the inner tube that it doesn't block the reserve opening:

[ Guests cannot view attachments ]


But if the gasket is properly round with an opening right in the middle, holding the strainer down against the petcock body, I would expect the strainer to remain centered, with the collar blocking the reserve opening:

[ Guests cannot view attachments ]


But this is the correct arrangement?

Bryanj:
Yup, reserve fuel still goes through the srainer on normal through the tubeso seal position means nothing.
As to the tube staying in the tank and being flush---they all do that sir just sorta happens.

Navigation

[0] Message Index

[#] Next page

[*] Previous page