1999-2001 Yamaha Phazer 500 / Venture 500 service manual, Page 50Get this manual

1999-2001 Yamaha Phazer 500 / Venture 500 service manual, Page 50

- I CARBURETOR TUNING Trouble Diagnosis IANOSJP Adjustment Remove the pilot jet, clean it with compressed air, and then install
Clogged intake Abnormal combustion: Backfiring Lean mixture Dirty carburetors Dirty or clogged fuel line Check and, if necessary,
clean the float and float valveReturn the starter lever to its seated position so that the starter valve is fully closedRemove
and clean the air ventRemove the main jet, clean it with compressed air, and then install ito Make sure that the main jet
is fully tightenedo Clean or replace the fuel lineClean the fuel tankTighten or replace the fuel line jointRepair or replace
the fuel pumpReplace the fuel filterRemove any obstructions (e.g ice)Clean and adjust the carburetorsClean the carburetorsClean
or replace the fuel lineClean the air vento o Overflow: Clogged air vent Poor idling Clogged float valve Poor performance
at low, mid-range, and Scratched or unevenly high speeds worn float valve or valve Excessive fuel conseat sumption Broken