670.22   ENGINE WARM-UP REQUIRED.
   (a)   The pilot or engineer of any powercraft for hire to carry passengers shall not permit passengers to come aboard before the engine of such powercraft has been permitted to run for a minimum of two minutes.
(ORC 1547.23)
    (b)   Whoever violates this section is guilty of a minor misdemeanor.
(ORC 1547.99(C))