HOw to do a carb tune up on a honda cb400 super four(NC31)?

Julian A

New member
After replacing my bike with what i was told was a OEM air filter ive noticed a significant drop in fuel consumption..i tried doing a tune up but i notice no change what so ever.
would like someone to help me on this pls
 
Hi why would you want to INCREASE the amount of fuel it burns?

If my bike was running as normal but used less fuel- that would be brilliant!.
 
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