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Sep 28th, 2007, 05:04 PM
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#1 | | Rookie 10+ posts
Join Date: Jul 2007 Location: Greer, SC
Posts: 28 Model: 1999 Fatboy Interests: Riding, Golf Occupation: Pump Repair
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Does anyone know the correct direction to turn the enrichining screw on a CV carb. I have adjusted mine clockwise to lean it out but it still burns rich. I called my harley dealership and asked the service guy, he said he "thinks" clockwise is correct but I wanted to see if anyone knows for sure.
Thanks. | 
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Sep 28th, 2007, 05:56 PM
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#2 | | 200+ posts and climbing
Join Date: Aug 2007 Location: Chas WV
Posts: 447 Model: 05 XL883C Interests: shorter list since getting the XL Occupation: Geek for a small family owned company
| Righty tighty, lefty loosy. Just like any other valve turn it clockwise to close it and counter to open. Turning it in will lean it out and out will richen it up.
Can I ask what bike this is on? Please don't say 04-06 Sportster.  There is a rash of us having this problem as of late. | |
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Sep 28th, 2007, 06:02 PM
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#3 | | Moderator Has posted 500+
Join Date: Jul 2005
Posts: 4,061
| ya dont want to turn it in too far, it will be to lean. if ya like, you can tell us your set up and what changes have been done,maybe we can figure out why it is to rich. 
it may not be the carb....... | |
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Sep 28th, 2007, 07:44 PM
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#4 | | Rookie 10+ posts
Join Date: Jul 2007 Location: Greer, SC
Posts: 28 Model: 1999 Fatboy Interests: Riding, Golf Occupation: Pump Repair
| The bike is a 99 fatboy. The carb has been jetted but I don't know what size jets were used. the slide is 5 grams lighter and a softer spring. other than that the bike is stock except for 2 into 1 exhaust and screaming eagle ignition module. The carb was built for a 103" and I bought it with the work already done. | |
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Sep 29th, 2007, 08:51 AM
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#5 | | Has posted 500+
Join Date: Jul 2006 Location: Churchill County, NV
Posts: 603 Model: '99 FLHR Road King Interests: Ride, Hunt, 4X4, Fish, Cigars - the good things Occupation: U.S. Navy - Retired
| So your running a carb built for a 103 on a Evo 80?  That is meant for 20% more engine than you're running -there is your likely problem, you'll be messing with this awhile to get it acceptable.
What make CV carb is it? And are you certain it is a CV? Not that that even matters for the original question - just trying to establish a base of knowledge to help out. | 
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Sep 29th, 2007, 07:08 PM
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#6 | | Moderator Has posted 500+
Join Date: Jul 2005
Posts: 4,061
| if the carb is set up for a 103, it probably needs rejetted to get it rideable for you. rejetting is a cakewalk..... | |
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Sep 30th, 2007, 08:09 AM
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#7 | | Rookie 10+ posts
Join Date: Jul 2007 Location: Greer, SC
Posts: 28 Model: 1999 Fatboy Interests: Riding, Golf Occupation: Pump Repair
| As it turns out the jetting my be the main issue. I still have the stock carb, s I am putting it back on while I re-jet the other one. I didn't realize how bad it was until I went on a poker run yesterday and everyone that rode behind me said I was killingthem with the fumes. So I decided to change it back. rejet, and this winter I will install a sronger cam and do some head work.
Thanks to everyone for your help and wisdom with this issue. | |
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Sep 30th, 2007, 02:14 PM
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#8 | | Administrator Frequent Posting Club
Join Date: Jan 2005
Posts: 1,210 Model: Harley FLHX Occupation: Web Developer by day, 25+ years of carb building by day, hey what happened to my day?!
| The carb is far too rich if the mixture screw won't make the engine stumble when screwed all the way in. The pilot jet could be off by as much as 4 sizes. You might want to check your plugs, bet they got a pretty good coat of carbon on them. | |
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