Author Topic: Carb work  (Read 427 times)

Offline mattsz

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Re: Carb work
« Reply #15 on: February 13, 2019, 05:09:29 PM »
I've got a new o-ring set... it includes the rings for the pipes that connect the carbs together.  I wasn't planning on getting in that deep, as I mentioned earlier - just dismantle as much as possible without separating the bodies, then clean.  Do you guys think that's a false economy at this point?  I was told the bike was running great two years ago, but I really don't know.  If I'm going this far with the strip and clean, does it make sense to go the full monty?  Or is it wise to fix what I know is bad, then try it out?

Is there a specific resource which would show me specifically, on these carbs, what parts are what and where they go... the jets and float valve and such I know about, but what about the different passages?  I'm looking to dismantle the carbs enough to replace the rubber bits and clean everything as best I can, but without separating them, which means carb cleaning spray and compressed air.  And probably some degreaser for the exteriors...

Any thought on this?  Some tutorial or video?  Or do I just clean everything?

Offline Nurse Julie

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Re: Carb work
« Reply #16 on: February 13, 2019, 05:17:27 PM »
Personally I would not remove the back plate and split the carbs if I didn't think there was a problem that needed attention. I would pay more attention to the bits I can get to and make sure they are as clean as possible and fit new O rings etc. If you do need to remove carbs from the back plate and spit them, it is easy enough but it doesn't sound like it's necessary in your case.
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Offline mattsz

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Re: Carb work
« Reply #17 on: February 13, 2019, 05:45:39 PM »
Thanks Julie!  That's kind of where my head is at anyway, in case you hadn't sorted that out... but all the easy-access rings need replacing, so I was on the fence about digging further.  I will definitely check the balance of the slides on the bench; the choke linkages are mis-adjusted and I imagine the slides could be, too...

Offline blackeagles

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Re: Carb work
« Reply #18 on: February 14, 2019, 12:04:07 PM »

I have both.  Interesting that the Honda service manual doesn't mention the needle grooves...

if you have the 'shop manual - honda cb350f-400f' (hwm002) by honda then its right at the back on page 95!
« Last Edit: February 14, 2019, 12:05:52 PM by blackeagles »

Offline blackeagles

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Re: Carb work
« Reply #19 on: February 14, 2019, 12:13:59 PM »
Personally I would not remove the back plate and split the carbs if I didn't think there was a problem that needed attention. I would pay more attention to the bits I can get to and make sure they are as clean as possible and fit new O rings etc. If you do need to remove carbs from the back plate and spit them, it is easy enough but it doesn't sound like it's necessary in your case.

easy maybe for some of you 'old timers' (not you julie of course :))) but i was finding it difficult just getting the slides out - 'cos i'm not used to honda multis' - but i see there are complete repair kits jets and all on ebay for about £30ish or with the floats for about £45ish which, if mine is still running so very rich after syncing them i may/will have to carry out - 4th time taking them off, but without trying them first you can not tell if they will work ok or not..
« Last Edit: February 14, 2019, 03:51:04 PM by blackeagles »

Offline mattsz

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Re: Carb work
« Reply #20 on: February 14, 2019, 12:29:23 PM »

I have both.  Interesting that the Honda service manual doesn't mention the needle grooves...

if you have the 'shop manual - honda cb350f-400f' (hwm002) by honda then its right at the back on page 95!

Yes, you're right, of course - I did notice that.  I wasn't clear, what I meant was, that I thought it interesting that that manual doesn't mention the grooves at all in the work description...

Offline Bryanj

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Re: Carb work
« Reply #21 on: February 14, 2019, 01:04:09 PM »
Keyster kits are not good for brass bits which rarely wear but usually have all the gaskets and O rings

Offline Dave487

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Re: Carb work
« Reply #22 on: February 14, 2019, 09:01:52 PM »
I think you'll always get black sooty plugs if you're just checking them after idling as they don't hot enough to burn it off.

Offline Bryanj

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Re: Carb work
« Reply #23 on: February 14, 2019, 09:48:56 PM »
Also forgot to say 500's do run rich low down.