Kohler Command Pro ECV630 ECV650 ECV680 ECV730 ECV740 ECV749 CV735 CV26 CV745 Factory Service Repair Manual

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• Fuel efficiency: Closed-loop electronic fuel injection automatically adjusts the air-fuel mixture for optimal performance and fuel savings of up to 25% over comparable carbureted models.
• Optimal performance: The EFI system provides reliable, car-like starting without a choke or priming and automatically adapts to changes in altitude, temperature, and other conditions.
• Durability: Features include full-pressure lubrication, a full-flow oil filter, and a heavy-duty air cleaner, all designed to meet commercial-grade standards.
• Models: ECV630 (21 HP), ECV650 (21 HP), ECV680 (23 HP), ECV730 (23 HP), ECV740 (25 HP), and ECV749 (26.5 HP).
• Warranty: Many models come with a 3-year, unlimited-hour commercial limited warranty. 

• Engine design: Utilizes a carburetor instead of EFI.
• Durability: Shares the robust construction of the Command PRO series, including cast-iron cylinder liners.
• Models: The CV series includes models like the CV735 (26 HP), CV745 (27 HP), and CV26, though specific specs may vary by manufacturer.
• Applications: Commonly used in heavy-duty mowers from brands like Exmark, Scag, and Toro. 

• EFI system issues (ECV): While generally reliable, some users report problems with the EFI system, such as faulty fuel pumps or sensors.
• Carburetor problems (CV): Like most carbureted engines, the CV series can experience issues related to clogged jets or a gummed-up carburetor due to ethanol-blended fuels.
• General issues: Both series can face common engine problems like overheating due to clogged cooling fins, starting issues from a weak battery or faulty ignition coil, and loss of power from a dirty air filter. 

• Maintenance kit: Kits for the Command PRO EFI ECV series are available from retailers like Tractor Supply and include an air filter, oil filter, oil, fuel filter, and spark plugs.
• Fuel pumps: Replacement fuel pumps for the EFI models (e.g., ECV680) can be found at retailers like V Power Equipment.
• Starters: Replacement starters for the ECV series are also readily available.
• OEM parts: Parts for both the ECV and CV series can be purchased from online retailers like ProPartsDirect, Arlington Power Equipment, and eBay. 

• Online retailers: Websites like Tractor Supply, V Power Equipment, ProPartsDirect, and Arlington Power Equipment carry complete engines and maintenance parts for these series.
• eBay: A source for a variety of new and used parts and complete engines.
• Local dealers: Visit the Kohler Engines “Find a Dealer” tool to locate local sellers for genuine parts and service.