As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REDUCED POWER FROM CRUISE TO PERFORM A MANEUVER. WHEN POWER WAS RE-APPLIED THERE WAS NO RESPONSE FROM THE RT ENG. POWER LEVER WAS CYCLED BACK & FORTH SEVERAL TIMES WITH NO EFFECT. PILOT ELECTED TO SHUT DOWN THE ENG & RETURNED TO LAND WITHOUT FURTHER INCIDENT. TEARDOWN OF THE FUEL CONTROL UNIT REVEALED A FAILED BELLOWS ASSEMBLY.