B737-800
Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument
Human-Machine Interface
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Overcame Equipment Problem
Human Factors
Below 500 ft. AGL; while guarding the throttles; I adjusted my position in the seat to gain better visual. Inadvertently knocked #1 engine start lever approximately 1 inch out of the gate. Immediately returned the lever into the gate; engines indicated normal. At about 200 ft.; the #1 engine started to roll back and shut down. First Officer continued landing without incident.I did not realize a movement that slight of the start lever would shut down the engine. Will make sure my hands are clear of the levers while guarding throttles.
B737 Captain reported that he accidentally bumped an engine start lever during approach; causing the engine to shut down.