Honda-SOHC

SOHC.co.uk Forums => CB750 => Topic started by: willythepooh on September 18, 2018, 11:21:57 PM

Title: K4 carburettor float bowl and drain plug
Post by: willythepooh on September 18, 2018, 11:21:57 PM

Tried to remove the drain plug from carb no.4 and it snapped off. I then used a screw extractor and snapped that inside the bit that was left. Not happy with that, I then tried to punch it out from the inside, slipped and cracked the bowl.
Anyone got a spare they want to part with, because I’m well and truly screwed now.

Title: Re: K4 carburettor float bowl and drain plug
Post by: willythepooh on September 19, 2018, 05:49:17 PM

Managed to get one off a cb77 that a mate had.
Result !

Title: Re: K4 carburettor float bowl and drain plug
Post by: philward on September 19, 2018, 11:16:24 PM

Stopped using stud extractors years ago - more hassle than they are worth - glad you got sorted anyway.
Anybody got any tips for getting those drain plugs out? I've never had any luck getting them out easily

Title: Re: K4 carburettor float bowl and drain plug
Post by: willythepooh on September 28, 2018, 09:00:21 AM

Brake fluid is supposed to get around the threads.

I only have my float bowl on long term loan folks, so any help would be appreciated.
Is diecast metal repairable ?

Title: Re: K4 carburettor float bowl and drain plug
Post by: K2-K6 on September 28, 2018, 09:26:39 AM

Definitely looking for another as very difficult to get repaired.

The material is really good for what it has to do in a carburettor construction but those properties don't lend themselves to any worthwhile repair.  Even someone from the magic circle, working under a black cloth in a dimly lit theatre, would stand just about chuff all chance of achieving that.

On a practical note if single bowls aren't available,  it may be more attainable to buy a used set of carbs to get any pieces you want. Price could be a bit higher but worth a look around to see what's available.

Title: Re: K4 carburettor float bowl and drain plug
Post by: RGP750 on September 28, 2018, 11:32:41 AM

I'll have a look on Sunday.
At Silvers tomorrow,

Title: Re: K4 carburettor float bowl and drain plug
Post by: philward on September 29, 2018, 09:58:40 PM

What about this - https://www.ebay.co.uk/itm/HONDA-CB750-SOHC-CARB-CARBURETTOR-SPARES-INC-2-INLET-RUBBERS/253903142987?hash=item3b1dce804b:g:6tgAAOSw4vJaynmt

Title: Re: K4 carburettor float bowl and drain plug
Post by: RGP750 on October 01, 2018, 08:44:44 AM

I have 2 , one is chromed but both are 1 and 2 not 3 and 4 , they will fit but the drain screw will be on the wrong side.
PM me if any good .

Title: Re: K4 carburettor float bowl and drain plug
Post by: willythepooh on October 13, 2018, 07:45:19 PM

I’ve managed to get a spare one from the Stafford show for £5.
The screw in this one is stuck also 😂