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Old 07-09-2007, 01:04 PM   #16
yellowlimited93   yellowlimited93 is offline
 
Join Date: May 2007
Posts: 29
Btw, everyone who has one of these china quads has to let me know how there 4th gear is. If it runs alright, or if it just bogs down and wont go anywhere like mine. Thanks in advance.


 
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Old 07-09-2007, 01:45 PM   #17
kczukiman   kczukiman is offline
 
Join Date: Jul 2007
Location: Independence,Missouri
Posts: 1,049
yellow,
My hi-bird 250 bogged a little until I adjsted the carb.granted I think the fourth gear is a little high, on pavment it runs fine.


 
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Old 07-09-2007, 11:29 PM   #18
yellowlimited93   yellowlimited93 is offline
 
Join Date: May 2007
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kczukiman
Did you just lower the c-clip to make carb run richer? If so, I will do this, richen up the idle mixture, put in a new spark plug, and see how it runs from there.


 
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Old 07-09-2007, 11:33 PM   #19
kczukiman   kczukiman is offline
 
Join Date: Jul 2007
Location: Independence,Missouri
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Yes,lowered the c clip and adjusted the air fuel.It made a big difference.I also changed the spark plug.


 
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Old 07-09-2007, 11:37 PM   #20
yellowlimited93   yellowlimited93 is offline
 
Join Date: May 2007
Posts: 29
Did you lower the c-clip the whole way down, or only one down? Also, how much did you richen the screw up, like how far from closed position. Thanks for all the help.


 
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Old 07-10-2007, 12:01 AM   #21
kczukiman   kczukiman is offline
 
Join Date: Jul 2007
Location: Independence,Missouri
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Yes I lowered the clip all the way down.As far as the richness I closed it all the way then opened it 1 1/2 turns to start with.Then I adjusted to where the rpms were the highest then backed the idle screw in until I had a purfect purrrr.After that I hit the throttle with quick bursts to make sure I had a good response.Put it all back together and she runs like a champ.


 
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Old 07-10-2007, 04:53 PM   #22
NewEnglandTrails   NewEnglandTrails is offline
 
Join Date: Sep 2006
Location: The Quiet Corner of CT.
Posts: 387
Yellow,

Let us know if it makes a difference.!! Remember results may vary by altitude etc. If the top of the carb is easy to get at you could try the C-Clip in increments to see which works best..

Glad to hear you got good results kc... and that you changed out the stock plug. Out of curiosity when you changed out the stock plug did the reach look different than on the new one? My NGK looked like it had a shorter reach than the stock.. But it works great.

NET
__________________
2006 HIBIRD QH200-st atv, 2005 Kinroad 200GY-01, 2006 Roketa DB-05, 1980 Kawasaki KZ440 LTD


 
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Old 07-11-2007, 04:59 PM   #23
kczukiman   kczukiman is offline
 
Join Date: Jul 2007
Location: Independence,Missouri
Posts: 1,049
the plug looked to be about the same.My wife took it to advanced auto and they matched it up .its ngk DR8ES-L


 
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Old 08-05-2007, 12:26 PM   #24
yellowlimited93   yellowlimited93 is offline
 
Join Date: May 2007
Posts: 29
I finally got my carb tuned. It has been a busy summer for me mostly consisting of work, so I have not had much time to play with the atv. This morning I put a new NGK plug in the 250 as well as richen up the carb. There is still a little hesitation off idle if I give it full throttle, but if you ease the gas a little and then straight to wot it will scream. When I have time, I will fine tune the low idle screw more, but for now I just want to ride the thing and see if it helps at all in 4th gear acceleration. I will keep everyone updated.

Also, when I took the old Chinese made spark plug out of the bike, it was barley darker then white, showing how lean these things are set from the factory.


 
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Old 08-08-2007, 06:09 PM   #25
VBIKEUSA   VBIKEUSA is offline
 
Join Date: Aug 2007
Posts: 7
thank guys

thank you for all of your nice feed back ,we will try our best to support and service our customers ,all of our ATV is VBIKE and it made in chongqing china where is all quality ATV come from , the only model we sell under HI-BIRD is 200cc . :P


 
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