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Post by speedracer on Oct 14, 2010 14:57:05 GMT -6
Here are a few pictures.  Then there are these two nipples with nothing connected to them. If there is an A/F adjustment screw on the bottom of the carb I can't feel it.  |
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Post by we350z on Oct 14, 2010 15:02:26 GMT -6
Looks that way since you got the placard with the magical word "California". Looks exactly like mine (JCL MP 250A). Nice scoot! I have the Black/Silver model :-)
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Post by speedracer on Oct 14, 2010 15:14:54 GMT -6
Thanks #1 As I seem to have a lot of hoses going all over the place and it does say the magic word California on it. I guess that is the reason why I can't find the A/F screw. The scooter was purchased from a CA company.
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Post by sprocket on Oct 14, 2010 15:36:04 GMT -6
One of those brass nipples should have a vacuum line attached to it, perhaps both. That is the carburetor de-acceleration valve.
Basically it leans out gas flow when the engine de-accelerates... saves fuel and stops back-firing...
So, check for a missing vaccum line...
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Post by we350z on Oct 14, 2010 16:14:26 GMT -6
I think I have one that is hoseless as well and my scoot runs great. I did do the vacline reroute for max pressure at the pump per JRR's suggestion. I have nothing to compare this to though as I did this before ever riding it.
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Post by speedracer on Oct 14, 2010 16:16:19 GMT -6
sprocket There is no hose that I can see which would connect to either one of the nipples. I have 2 Y connectors with 3 hoses on each and they are connected. Not to mention all the other hoses which go all over the place.
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Post by sprocket on Oct 14, 2010 16:23:12 GMT -6
My mistake... I though it was a GY6 150cc.
A 150 wouldn't run like that...I guess it is not used on a 250cc
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Post by Cruiser on Oct 14, 2010 20:59:17 GMT -6
Thanks #1 As I seem to have a lot of hoses going all over the place and it does say the magic word California on it. I guess that is the reason why I can't find the A/F screw. The scooter was purchased from a CA company. The A/F (pilot) screw is located under the inlet side of the carb. It's covered by a metal or plastic cap which has to be removed in order to adjust. mpsracing.net/helix-manual/04-07.html |
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Post by yoster on Oct 15, 2010 10:44:17 GMT -6
You have the correct plate.
It ultimately comes down to VIN though. Won't know until you try. There have been stories of CARB plates (what you have) getting on non-CARB approved VINS. But that is the correct plate. Exact one I have.
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Post by speedracer on Oct 15, 2010 18:01:23 GMT -6
I guess they put the same plate on all the scooters they make. I was more worried about the two nipples with no hoses on them. I didn't want to be sucking non filtered air into the carb.
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Post by we350z on Oct 15, 2010 18:08:39 GMT -6
Yeah I was very worried about mine and it was fine. Manufactured 12/07 - what year is yours?
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