Carb rebuild

[Nurse Julie]

Keihin 054a are standard on all 400/4 SOHC .

[Multiman]

Thanks. for confirming Julie

[Multiman]

Well this forum and its members are great.

Laverdaroo drove over in the snow yesterday and helped me remove my carbs, so much easier with two sets of hands and someone who's done it before.
Not content with that act of generosity, he then set off back home to strip, clean and fettle them all.
Cost to me - some coffee and home made biscuits.

Cheers Roo, you've restored my faith in humanity.

Anyway there are a couple of bits he's told me to try and source, so I thought I'd try here are there aren't available separately or from the usual sources.

4x float bowl drain bolts

Not sure of the correct name for this but 1 x main throttle return spring? Mines over length.

If anyone has either of these they are willing to part with please let me know and how much they'd like for them.

Many thanks
Best

Tim

[McCabe-Thiele (Ted)]

Roo is a good egg and a great character- he delivered my 500 even after his proposed other personal collections  en route fell through.

[Laverdaroo]

Im a right miserable sod generally mind!

The throttle return spring is too long and catching meaning the slides don’t fully open. Mr Silver had them but it’s the drain screws for the bowls are the main concern.
Had to kill one getting it out with heat and some Anglo Saxon, the other was loctite’d in (not sure if that’s a word) and has zero slot on it to remove it. More vocab, heat and mole grips retrieved it but hammered it in the process so a full set required.

Half the internals are new, half aren’t, worn needles into new tubes

Well on the way to being sorted but  had 5 hrs at em already……… loving it

A good Sunday afternoon with the radio on was had though
Nice to fiddle with something different for a change

Oh,and a plastic fuel line with a 4mm OD……………….bin!


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[Laverdaroo]

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[Laverdaroo]

This was the second time round for 1+2


Clagsville!

Check out the screws holding the bowls on…………proper
Possibly why the bowls were help on and sealed with brown window mastic. Genius

The bike’ s lovely and after fettling has commenced, she’ll run lovely too


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[Laverdaroo]

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[Oddjob]

For some unknown reason Honda fitted smaller screws than they should have, a lot of thread is left unused, most likely that’s why you tend to strip them out. I always clean the threads up and fit the correct length screws when I’m doing carbs, iirc the top caps screws are 16mm when they should be 20mm as an example.

[Laverdaroo]

I've heard you say that before Ken and logged it. Due to all the mismatched internals I've had a delve in the drawers in the Shed of Dreams and come up with a complete new set of brassware for it. I think it would be safer fitting all the same rather than this lot that they came with. The bike's done 50 thousand miles and the needles are very worn at the top.

I figure although aftermarket, they might neutalise the issues I may have with these 'bitsa' internals. I mean, the needles are a given but have no info on age, use, why only two sets were partly fitted and sp on,.........I might as well! Baseline settings and all that.

Tomorow evening alread palnned out then

[Laverdaroo]

The two grubbier ones were in the drawer where I’d left the bag open


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[Matt_Harrington]

Roo, you can come and finish my Alfa if you are that bored! (only joking!!)

[Laverdaroo]

After seeing it, I’d love to Matt but it’s shot of a commute

Hope you’re good buddy?


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[Terry Harlock]

Tim
I read your post, so had a look through for the float bowl drain screws, found a set on eBay, checked in with the seller as advertised as for the CB500 etc, he has messaged back confirming they are the correct ones for your carbs also, I will put the item number below, just put it in the eBay search bar and will bring them up. Not the cheapest but an option if you don't find elsewhere.
Regards
Terry

125142692954

[Multiman]

Hi Terry
thanks for spotting that for me. I hadn't realised the screws were common to those bikes. Every day is a school day.
I had given up on a UK source and had found some from CB-four.de which were pretty good value until the DHL costs were added on.
Anyway as needs must and Roo is champing at the bit I ordered the German ones.
Works out at about the same cost.
Cheers
Tim