CH18, CH20, CH23, CH25, CH640, CH730, CH740 - Kohler Power PDF fileused to operate this engine. STORAGE If engine will be out of service for 2 months or more follow procedure below. 1. Change oil while engine is still warm from operation. Remove spark plug(s) and pour about 1 oz. of engine oil into cylinder(s). Replace spark plug(s) and crank engine slowly to distribute oil. 2. Disconnect negative Kohler Engine | CH20S-64656 | eReplacementParts Repair Parts Home Lawn Equipment Parts Kohler Parts Kohler Command Pro Series Engine Parts Kohler CH20S-64656 Engine Parts × Continue Shopping Proceed to Checkout. We Sell Only Genuine Kohler Parts. Kohler CH20S-64656 Engine Parts. Find Part by Symptom Harness, Wiring. $90 Part Number: 24 176 171-S. Ships In 7 Kohler Engine Wiring Schematic | Free Wiring Diagram Variety of kohler engine wiring schematic. A wiring diagram is a simplified standard pictorial representation of an electrical circuit. It reveals the parts of the circuit as streamlined forms, and the power and also signal links between the devices.