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synchronize the carbs as you would a set of CVs, but you'd have to start and warm the bike, check vacuum levels, shut the bike off, disassemble the carbs, adjust, reassemble, restart the bike, and recheck vacuum levels.
25 kwi 2019 · If you are having throttle issues (bog off idle, hard starting, etc.) take the time to clean your carb properly. After getting taken for $160 every season for a carb clean at the shop I realized that this can be done...
1 kwi 2014 · great big HUGE deal on the fcr carbs....and another reason for them being the greatest carb for 4-stroke performance ... the accelerator pump...
4 wrz 2014 · The problem is that the bigger the carb, the lower the air velocity through the carb, especially at lower RPM’s. Air velocity is needed to create the vacuum that draws the fuel up from the carb to be mixed with air on its way into the combustion chamber.
Before you start with the troubleshooting and repair steps below, use carb cleaner and an air gun to clean and blow out every jet, orifice, and passageway in the carb. In order to work correctly, the carb must be gunk free, and not worn out (eg: leaky seals). If in doubt, install a fresh carb kit to ensure everything is sealing up correctly.
Keihin FCR tuning manual. Free tuning manual by Patrick Burns. It covers all the important topics in tuning your FCR racing carbs: synchronizing; fuel screw; slow fuel jet; slow air jet; slow air screw; main fuel jet; main air jet; needle codes; needle selection; etc.
24 lut 2009 · A Carb rebuild with Dr. Dirt Karel Kramer. Tech How-To. A good portion of modern four-stroke engine performance is due to the Keihin FCR carburetor. An accelerator pump and a high-tech...
