2006-2008 Yamaha RS, Vector, Rage Factory Service Manual, Page 78Get this manual

2006-2008 Yamaha RS, Vector, Rage Factory Service Manual, Page 78

CARBURETOR TUNING Trouble Poor performance at normal speeds: Excessive fuel consumption Poor acceleration Poor performance
and adjust the carburetorsClean the carburetorsClean or replace the fuel lineClean the air vent Disassemble and clean the
float valve Do not scratch the valve seat Clean or replace the float valve and valve seat The valve seat and body must be
replaced as setReplace the floatCheck and, if necessary, replace the following parts: Float tang Float (entire assembly)
Arm pin Overflow Starter valve is left open Clogged air vent Clogged or loose main air jet Clogged fuel line Dirty fuel tank
Air leaks into the fuel line Low fuel pump performance Clogged fuel filter Clogged intake Abnormal combustion: Backfiring
Overflow: Poor idling Poor performance at low, mid-range, and high speeds Excessive fuel consumption Hard starting Power
loss Poor acceleration Lean mixture Dirty carburetors Dirty or clogged fuel line Clogged air vent Clogged float valve Scratched