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Author Topic: Trying to find lock nut for top of 72 Carb  (Read 553 times)

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Offline WhizWit81

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Trying to find lock nut for top of 72 Carb
« on: January 03, 2022, 11:09:55 AM »
Hey guys,

Bike has been sitting for a while and back to sorting through odds and end. I lost the top lock nut for the top of one of my carbs (not sure if that's what it's called). Anyone have any ideas where to get one?

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Offline pjlogue

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Re: Trying to find lock nut for top of 72 Carb
« Reply #1 on: January 03, 2022, 12:30:06 PM »
The parts to the carbs came with the carbs and other than jets, parts aren't available individually.  The nut is probably 3 or 4mm fine thread metric.  You could probably get one at a big box store but it will be smaller on the outside dimensions but should still work as a lock nut.

-P.
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Offline PeWe

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Re: Trying to find lock nut for top of 72 Carb
« Reply #2 on: January 03, 2022, 12:50:52 PM »
Check eBay and similar. Many carbs have corroded after long time parked.
The rest of the carbs can be sold as parts.
I bought a rack with its moving  parts a few years ago.
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CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline Keith

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Re: Trying to find lock nut for top of 72 Carb
« Reply #3 on: January 03, 2022, 08:20:34 PM »
Pretty sure I have one!
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Offline WhizWit81

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Re: Trying to find lock nut for top of 72 Carb
« Reply #4 on: January 04, 2022, 04:27:18 AM »
Keith for the win! I'll shoot you a message.
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Offline Progas

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Re: Trying to find lock nut for top of 72 Carb
« Reply #5 on: January 04, 2022, 07:24:03 AM »
If he doesn't have one, I have all kinds of them and any other carb part you need!!
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Offline timtune

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Re: Trying to find lock nut for top of 72 Carb
« Reply #6 on: January 04, 2022, 07:42:07 AM »
I've got a bunch of racks of carbs. What's the going rate for set?
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Offline WhizWit81

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Re: Trying to find lock nut for top of 72 Carb
« Reply #7 on: January 04, 2022, 07:56:42 AM »
Wow thanks all. I literally just need that top lock nut screw at the moment. Wish I had of known you had others...just bought a few vacuum screws from ebay
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Offline Keith

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Re: Trying to find lock nut for top of 72 Carb
« Reply #8 on: January 04, 2022, 10:17:35 AM »
I will double check tonight but I am sure I have.
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