Author Topic: Well, that's buggered it!  (Read 1770 times)

Offline Andrew-S

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Well, that's buggered it!
« on: June 09, 2021, 03:16:00 PM »
So, today I decided to make a start on trying to get my K1 to idle by removing the slow jets to check and clean them.  Nope, the first one snapped off in the carb body so now the carb bank will now have to come off!

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Offline Nurse Julie

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Re: Well, that's buggered it!
« Reply #1 on: June 09, 2021, 03:19:11 PM »
Oh poo 😢😢😢😢😢
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Offline McCabe-Thiele (Ted)

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Re: Well, that's buggered it!
« Reply #2 on: June 09, 2021, 03:37:22 PM »
I feel for you Andrew what started as a simple job to adjust the mixture  turns into hours of work - we've all been there mate.
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Offline Laverda Dave

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Re: Well, that's buggered it!
« Reply #3 on: June 09, 2021, 03:45:33 PM »
That's a pain. As Ted said, We have all been there, done that, ruined a day and know it's going to get expensive!
Hopefully the remains will come out easily.
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Offline hairygit

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Re: Well, that's buggered it!
« Reply #4 on: June 09, 2021, 04:25:55 PM »
Hmm, rhymes with "clucking bells!" What a pain. Good luck with getting it out.

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Offline Spitfire

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Re: Well, that's buggered it!
« Reply #5 on: June 09, 2021, 06:38:21 PM »
Know the feeling, the same thing happened on my F1, I had to very carefully drill it out, not nice.

Cheers

Dennis
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Online Johnny4428

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Re: Well, that's buggered it!
« Reply #6 on: June 09, 2021, 08:24:15 PM »
That is crap! Was the float pins that gave me grief on my K3. Good luck with sorting.



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Offline Andrew-S

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Re: Well, that's buggered it!
« Reply #7 on: June 11, 2021, 10:24:02 AM »
That's it, I've just finished counting to a million and I'm all calm now............ ;D I'll be taking the carb bank off next week, I'm guessing the air box is first?
1972 UK XL250 K0 Motosport
1976 UK Z900 A4
2018 BMW R1200 GS

Offline Andrew-S

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Re: Well, that's buggered it!
« Reply #8 on: June 13, 2021, 10:19:24 PM »
I got a wave of motivation today and whipped the carb bank off and they are surprisingly clean - hopefully the broken slow jet will be as easy to remove as the carbs and the other 3 don't break off too. Then they'll be stripped down inspected, ultrasonically cleaned, rebuilt and balanced and I might get to ride the K1 this year after buying it in 2018 after UK Pete took the old girl off the road in 2015.

Interestingly, the broken slow jet was a 35; I thought they were 40 as standard, so this may have contributed to why it wouldn't idle?

1972 UK XL250 K0 Motosport
1976 UK Z900 A4
2018 BMW R1200 GS

Offline Spitfire

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Re: Well, that's buggered it!
« Reply #9 on: June 14, 2021, 10:51:53 AM »
Pretty sure that the jet should have been 40, see the attached chart, I know mine was (CB750F1), found the photo of my broken jet, looks pretty much like yours.



Cheers

Dennis
« Last Edit: June 14, 2021, 10:53:37 AM by Spitfire »
1976 CB750F

1977 CB750F2 In bits

1964 BSA A65R In bits

Offline Andrew-S

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Re: Well, that's buggered it!
« Reply #10 on: June 14, 2021, 06:03:36 PM »
Seems common problem - in my K1's case they may have been overtightened or fuel varnishing around the threads which has acted like 'Loctite'!

There's some debate on jet size on another thread I've got running.

Cheers,
Andrew
1972 UK XL250 K0 Motosport
1976 UK Z900 A4
2018 BMW R1200 GS

Offline Spitfire

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Re: Well, that's buggered it!
« Reply #11 on: June 14, 2021, 07:01:38 PM »
It wasn't surprising on mine as the bike had sat in the garage for ten years while I worked away, the carbs were that full of gunge that I could not open the throttle.

The jets in mine were 40 and that is how the bike left the factory as I have owned it since new and the carbs have never been off before, mind you mine id an F1 so may be different to your bike

Cheers

Dennis
« Last Edit: June 14, 2021, 07:30:18 PM by Spitfire »
1976 CB750F

1977 CB750F2 In bits

1964 BSA A65R In bits

Offline Andrew-S

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Re: Well, that's buggered it!
« Reply #12 on: June 14, 2021, 10:12:41 PM »
That is pretty gungy Dennis, but not too bad considering - my K1 has been off the road since 2015 and luckily the fuel tap had been turn off so the carbs weren't too bad at first glance, so it'll be interesting to see what the insides are like.

Cheers,
Andrew
1972 UK XL250 K0 Motosport
1976 UK Z900 A4
2018 BMW R1200 GS

Offline Andrew-S

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Re: Well, that's buggered it! - slow jet now removed.
« Reply #13 on: June 28, 2021, 10:24:06 AM »
Gertcha!

This isn't my handiwork, I'm too heavy handed for such intricacies!  Well done Mark Kelleher of MK Classics in Woodley who used heat and more finesse that I can must muster......

1972 UK XL250 K0 Motosport
1976 UK Z900 A4
2018 BMW R1200 GS

Offline Spitfire

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Re: Well, that's buggered it!
« Reply #14 on: June 28, 2021, 10:26:15 AM »
Happy for you, it's nice when it works out like that.

Cheers

Dennis
1976 CB750F

1977 CB750F2 In bits

1964 BSA A65R In bits

 

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