Blue Bird · Canada · Crit
Blue Bird All American School Bus, All American Non-School Bus: Fuel System
Affects Blue Bird All American School Bus, All American Non-School Bus · 1972–1975 — about 49 vehicles.
The hazard
IF PROPER STARTING PROCEDURE IS NOT FOLLOWED, LEAN CARBURETOR SETTINGS REQUIRED FOR EXHAUST EMISSIONS MAY CAUSE BACKFIRE THROUGH THE CARBURETOR, CAUSING POTENTIALLY IGNITABLE FUEL DROPLETS TO BE ABSORBED BY AIR CLEANER. THE SAME CONDITION COULD RESULT FROM ENGINE REACHING OPERATING TEMPERATURE.
What to do
Contact your dealer; the remedy details were not included in the filing.
Critical — crash/injury risk now
High — injury risk; see remedy
Moderate — fix at next service
Low — minor / informational