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Author Topic: K7 750 - leak between 3rd and 4th carb  (Read 459 times)

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Offline Erny

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K7 750 - leak between 3rd and 4th carb
« on: March 30, 2018, 12:42:15 PM »
I found another aging issue - leak beween 3rd and 4th carb. It is PD41A

Looks like small piece of hose between carbs has leak - I tried to find in spare parts catalogue, but there is no detail about it. Do you know what is hose size there? Just to prepare in advance, buy approprieate hose.

Carbs are still on the bike, so not 100% if this is the source of leak...

attached picture of it, taken from bottom
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CB750K K7 USA model (1977)
CB550K1 USA model (1975)

Offline Paintedseat

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Re: K7 750 - leak between 3rd and 4th carb
« Reply #1 on: March 30, 2018, 01:06:31 PM »
Just use some lawnmower fuel hose. Make sure you don't lose the metering brass tubes inside
« Last Edit: March 31, 2018, 11:07:14 PM by Paintedseat »
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Offline Paintedseat

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Re: K7 750 - leak between 3rd and 4th carb
« Reply #2 on: March 30, 2018, 01:08:08 PM »
It's what joins the accelerator pump
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