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1978 CB550 K3 "running" restoration

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SPR:

--- Quote from: Bryanj on June 21, 2020, 08:45:52 AM ---Careful with the tappet, i chased a loose tappet for a few hours till i nipped up the exhaust gaskets!!

--- End quote ---

Yep - that is what Ken said so checked they were all tight first ...

The problem I have is my ear didn't pick anything up :) so may not know if I was successful till someone more knowledgeable has a listen again

Simon

SPR:

--- Quote from: Oddjob on June 21, 2020, 09:17:39 AM ---Did you find any out of adjustment?

Really tidy bike that Simon, looked very nice indeed.

Best bet for making sure the exhaust gaskets seal properly is too loosen off the rear bolt so the back end can float a little and then tighten the front nuts up, you can twist the exhaust out of shape tightening the back bolt up first especially if you've got the hanger positioning wrong which is quite easy to do on the 500, not so sure on the 550K3 can't remember how they fitted now.  Try loosening all the nuts/bolts a little and doing the fronts up first.

--- End quote ---

I think 2/3 were a fraction loose so did them as you said after bending the feeler gauge so the end was perfectly flat when adjusting.

Yep slackened the brackets slightly before nipping up the bolts - a couple did nip up a full turn - I suspect I'm over cautious when doing them up

SPR:

--- Quote from: Oddjob on June 21, 2020, 09:36:09 AM --- Maybe a job when you've got the head off?

--- End quote ---

Ha ha ... good joke :)

SPR:
Need some assistance please ....

So was checking poor cold starting and found choke mech spring bit was sticking and not moving butterfly’s

Carbs off and found that spring plate was twisted - straightened and all ok

Thought whilst carbs off would remove bowls and check float heights etc again

Now - next is going to sound stupid ... I suddenly noticed the slow jets are different sizes ? Two outer ones are visually bigger than the inner ?

Is it me going mad or are they wrong ? Tried to pull them out but failed so any help would be appreciated

I’ve attached pics to hopefully show the problem



SPR:
I've managed to get a couple pics of the jet sizes - the middle two are correct at 42 but both outers are 35 ?

So I can only assume these have been replaced incorrectly when the bike was done front to back inc the carbs cleaned etc  ::)

Has anyone got 2 x 42 slow jets or point me to where I can get some from

I'm also assuming this won't have helped me try to get the bike idling and starting easily ... it does however run great :)

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