What’s this spring lever under the carbs?

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What’s this spring lever under the carbs?

19 Jul 2023 00:19
#887400
Anybody know what this is? And what it does? Spring lever upside down under the carbs. Pushes up but springs back down. 

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Re: What’s this spring lever under the carbs?

19 Jul 2023 06:16
#887402
Anybody know what this is? And what it does? Spring lever upside down under the carbs. Pushes up but springs back down. 

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Re: What’s this spring lever under the carbs?

19 Jul 2023 06:38
#887404
Difficult without a picture but sounds like an accelerator pump ?
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Re: What’s this spring lever under the carbs?

19 Jul 2023 09:55
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Re: What’s this spring lever under the carbs?

19 Jul 2023 10:56
#887410
Looks like you are having issues attaching your pics, follow the below process
Click "attachments" - click "add file" - select your pic - wait for the green text to appear - click "insert all" then submit and you should be good to go

 

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Re: What’s this spring lever under the carbs?

19 Jul 2023 11:23
#887412
Is it working?

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Re: What’s this spring lever under the carbs?

19 Jul 2023 11:28
#887413
Accelerator pump. Twisting the throttle should move the lever. To see if it is working, remove a filter and peek inside as you twist the throttle. You should see a small squirt of fuel.
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Re: What’s this spring lever under the carbs?

19 Jul 2023 14:22 - 20 Jul 2023 04:58
#887419
Just in case. You should see a small squirt of fuel... in each carburetor. see the manual for other details.
Last edit: 20 Jul 2023 04:58 by martin_csr.

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Re: What’s this spring lever under the carbs?

19 Jul 2023 22:16 - 20 Jul 2023 10:17
#887441
From the pic posted it appears that this set of carbs has both a pump and a sensor.  As I understand it one of the things the sensor does is only allow fuel out of the pump if the engine is running (providing vacuum) 

 
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Last edit: 20 Jul 2023 10:17 by gd4now.
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Re: What’s this spring lever under the carbs?

20 Jul 2023 13:44
#887453
Thanks for all the great info fellas! I just picked up a 79 KZ650... B3 I think... it's black with the green and yellow striping. Pretty good condition overall but the engine is sounding a bit off, and I suspect it's running lean overall - so was wondering if that lever connected to the carbs had anything to do with it.

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Re: What’s this spring lever under the carbs?

21 Jul 2023 09:36
#887475
A 650 with accel pump with sensor, I had read/heard that some of them did have both but had not seen one or worked on one.  The pic you posted showed pod filters not air box, so I would think some jetting changes from stock would be required.  Any idea what jets are in it now?
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Re: What’s this spring lever under the carbs?

21 Jul 2023 09:58
#887476
No idea what jets are in currently. Any suggestions?

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