PROBLEM TO BE SOLVED: To adjust a control characteristic setting the relationship between an operation displacement of an accelerator operation unit and a rotational frequency of an engine, with a simple structure.SOLUTION: A work machine includes: a management unit 61 configured to manage a conversion table 51 setting the relationship between an operation displacement of an accelerator operation unit 80 and a rotational frequency of an engine; a control signal generation unit 50 configured to generate an engine control signal for controlling the rotational frequency of the engine, from the operation displacement of the accelerator operation unit 80 with the conversion table 51; a pattern detection unit 63 configured to detect a specific pattern of the operation displacement of the accelerator operation unit 80; and an adjustment unit 62 configured to execute an adjustment mode of adjusting the conversion table 51 in response to detection of the specific pattern.SELECTED DRAWING: Figure 1