Wiring to Switch Diagram - OPEengines CH740 - 25-27 hp 725cc; CH742 - 25 hp 747cc; CH750 - 27-30 hp 747cc; Home :: Kohler Engines / Parts :: Wiring Diagrams :: Wiring to Switch Diagram Wiring Diagrams. Wiring to Switch Diagram. We Also Ship Saturdays* 888-652-3990 I called your company looking for a Kohler 25 hp engine for one of our mowers. I could not find a good price Events | Institute for Translational Medicine and Therapeutics Symposia. ITMAT symposia enlist outstanding speakers from the US and abroad to address topics of direct relevance to translational science. Read more