Choke cable adjustment - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 5 (permalink) Old 09-09-2012, 02:57 AM Thread Starter
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Choke cable adjustment

My bike has been acting weird the last few days.
When I start her after sitting overnight to go ride for the day, she is hard to start.
I will have to crank her several times to get her to fire and stay idling.
I fully apply the choke till she starts, then I back it off a bit, and she immediately dies.
I put the choke back on, and she won't fire at all, and acts like she is flooding. I play with the choke to get her to run, but it's no use.
After she decides to run at a low idle, I apply the choke a very little bit at a time to get her to idle back up a bit, and at about half choke she will die.
I'm out of town, and I don't have access to the online manual I downloaded on my computer. I have checked the free play on the choke cable, and there is some slack so it's not engaging the plungers till you move it about a half inch.
When I engage the choke the idle won't go up like it's supposed to.
The carbs are off of a 750 and the needles and jets are out of a 700. Would that make any difference? I checked the slides, diaphragms and the coasting richeners and they are in good shape with no tears.
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post #2 of 5 (permalink) Old 09-09-2012, 09:33 AM
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The carbs are off of a 750 and the needles and jets are out of a 700.
The 700 and 750 used the same carbs and same jets.

Choke Cable Free Play
2-3mm

Choke Cable Adjustment

*Loosen the Locknut at the adjuster nut of the choke cable (on the left hand control), and turn the adjuster nut until you have the proper amount of free play.
*Tighten the Locknut after the adjustment
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post #3 of 5 (permalink) Old 09-09-2012, 01:57 PM
..have a vulcan good day!
 
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Quote:
Originally Posted by TSmith68 View Post
My bike has been acting weird the last few days.
When I start her after sitting overnight to go ride for the day, she is hard to start.
I will have to crank her several times to get her to fire and stay idling.
I fully apply the choke till she starts, then I back it off a bit, and she immediately dies.
I put the choke back on, and she won't fire at all, and acts like she is flooding. I play with the choke to get her to run, but it's no use.
After she decides to run at a low idle, I apply the choke a very little bit at a time to get her to idle back up a bit, and at about half choke she will die.

I'm out of town, and I don't have access to the online manual I downloaded on my computer. I have checked the free play on the choke cable, and there is some slack so it's not engaging the plungers till you move it about a half inch.
When I engage the choke the idle won't go up like it's supposed to.
The carbs are off of a 750 and the needles and jets are out of a 700. Would that make any difference? I checked the slides, diaphragms and the coasting richeners and they are in good shape with no tears.
After the proper Choke Cable adjustment, if still having difficulty starting,
seems like it would be a Fuel/Air (carb) problem. ....Possible float level ? ?

WilliamTech

'86 VN750 13,700 mi -Stock
-Purchased 2008 w/8800mi
Replaced ALL Cables . Kuryakyn LED Voltmeter
SilverStar Ultra 9003/HB2 H4 Headlamp, Jardine Fwd Controls,
Iridiums DPR7EIX-9 & Wires, Tuxedo Mod, Coil Mod, P/U Sensor Mod, Fork Seals,
Splines Lubed - 11/4/2012 - MF AGM Battery
Additional Flashing LED Brake Light on Trunk
Dampers went out @ 13+K !
After TOC MCCT's..... so amazingly quiet I discovered a rattling heat shield on my stock exhaust !
...have a vulcan good day!

Last edited by WilliamTech; 09-09-2012 at 02:01 PM.
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post #4 of 5 (permalink) Old 09-09-2012, 06:46 PM Thread Starter
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The float levels are good, I checked them.
The needles are different in the other set of carbs he bought.
The original needles are N27H front, N27M for rear for the 700
The needles that were in it are N27J front and N27K rear for the 750
I'm not sure if there would be that much of a difference in them.
I have 138/38 in it with the N27H and N27M with one shim under the needles, and the mixture screws at 2.5 turns. Both pipes are black, but the plugs look good with a slight bit of black on the electrodes. And the centers of the plugs are white with a slight bit of tan.
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post #5 of 5 (permalink) Old 10-07-2012, 09:48 PM
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check vent tube then pay the people you owe before you decide to spend money going out of town again

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