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Join Date: Nov 2007
Location: Chandler, Arizona
cleaning carb jets
I don't remember seeing anything about this on here before, and it never occurred to me before. I did have my carbs off and apart before, but that was over 30,000 miles ago. My bike recently got to where it wouldn't hardly idle, sometimes running on one cylinder. But it ran fine at highway speeds. So I figured the pilot jets were plugged up. I was not looking forward to removing and reinstalling the carbs to clean them. I tried soaking them in Seafoam, to no avail. Then I got to looking at them, and remembered how they were designed. I removed the bottom covers, which cover the jets. On my bike they are held on with two 7mm bolts. I could not get a socket in there, but I was able to bend a 7mm combination wrench where I could reach them with it. This did require removing the front cylinder cam chain tensioner for clearance, but that was not a big deal. I had already cut off the oil line tab with a Dremel when I switched to TOC tensioners. Once the bottom covers were off, I was able to remove the emulsion tubes fairly easily, with a screwdriver bit and a tiny wrench which fit onto the bottom part of it. I left the main and pilot jets in place, laid down next to the bike, and looked up, where I could clearly see them. I cleaned them with a piece of guitar string and spray carb cleaner. I cleaned the emulsion tubes and put them back, then put everything back together. The bike now idles perfectly, and it took under an hour, with no carb removal.
I am a motorcyclist, NOT a biker.
1997 Vulcan 750, purchased about a week ago
2006 Sportster 1200 Low
2013 Royal Enfield Bullet 500, converted to carb
2001 Yamaha XT225, heavily modified
2004 Honda Rebel 250
1979 Vespa P200E
2002 Vulcan 750 parts bike
1994 Yamaha XT225 parts bike