QUICK CLEANING DUALS
Get a large can of carb cleaner. I used this to clean the internal filter screens...it can clean one in about 30 seconds.
Here's detail tricks on the carbs: Remove the cover, diaphram, and check valve block over the jets. Spray carb cleaner into the pilot jet, with the tube connected on the carb cleaner can. Look into the carb throat, and you'll see three microscopic holes and one larger one off to the right that has carb cleaner coming out when you spray. After spraying initially, get someone else to slip their finger over the large hole to increase pressure to the three small holes. You will actually see the streams getting larger as the cleaner cleans out the varnish in the holes. This step is critical, if you want to have crisp throttle response on the bottom end.
Spray carb cleaner into the main jet too, but don't look into the carb while doing it unless you want it in your eyes!
Make sure you spray carb cleaner through the hose barbs, in and out. Remove the needles to get good flow through the inlet barbs.
Synchronize your carbs! 90% of the time one butterfly opens more than the other, reducing performance, max rpms, throttle response, and fuel efficiency. Use a flashlight, and lay an inspection mirror in the carb throat. Open the throttle wide open, and visually line it up with the atomizer. Then check the other butterfly the same way. Zip-tying the throttle to the grip keeping it wide open makes it easier. Use 2-8mm open-end wrenches to break loose the locknuts on the coupler between the carbs and rotate accordingly to get the butterflies the same position.
GREASE CARBS
Use lots of grease on all carb threads, screws, adjusters, cable nuts & wire. Be
liberal on the complete exterior. My preference is White Lithium grease. They won't come loose and next time when you
need to clean the filters it will be easier.
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