What could happen if the stop lever is not reached in the HOT position?

If the stop lever is not reached in the HOT position during the operation of a reciprocating engine, it could lead to potential engine damage. The stop lever is a critical component designed to control fuel flow and engine shutdown. When the engine is running in hot conditions, failure to reach the intended stop lever position could prevent appropriate fuel shutoff, which might result in continued fuel combustion when it should not occur. This can lead to overheating, excessive engine wear, or even catastrophic failure due to uncontrolled engine operation.

In addition, if the engine continues to run while it should be off, it may run excessively lean or rich, resulting in more heat being generated than the engine can safely dissipate. This excessive heat can warp engine components, such as cylinder heads or pistons, leading to costly repairs and downtime. Thus, ensuring that the stop lever reaches its correct position is essential for the longevity and reliability of the engine.