To Next PageTo Next PageWhy is oil leaking from the seals and gaskets on my Kohler Command CV740 Engine?
If oil leaks from the oil seals and gaskets of your Kohler Engine, check for a broken breather reed or a clogged, broken, or inoperative crankcase breather. Also, inspect for loose or improperly torqued fasteners, piston blow-by or leaky valves, or a restricted exhaust.
Why does my Kohler Command CV740 use an excessive amount of oil?
If your Kohler Engine uses an excessive amount of oil, it could be due to loose or improperly torqued fasteners (tighten them), a blown head gasket or overheating (replace the head gasket), or a broken breather reed (replace it). Other possible causes include a clogged, broken, or inoperative crankcase breather (repair or replace it), an overfilled crankcase (drain excess oil), or using the incorrect oil viscosity or type (use the correct one). Additionally, worn cylinder bore (repair or replace), worn or broken piston rings (repair or replace), or worn valve stems or guides (repair or replace) can contribute to excessive oil consumption.
Why is my Kohler Command CV740 so hard to start?
If your Kohler Engine starts hard, you might have a clogged fuel line or fuel filter. Other potential causes include an overheated engine, a faulty ACR mechanism, or misadjusted choke or throttle controls. Also, check for faulty spark plugs, a sheared flywheel key, or a malfunctioning fuel pump with a clogged or leaking vacuum hose. An engaged or faulty interlock switch, loose wires grounding the ignition kill circuit, low compression, or poor fuel quality could also be to blame. Finally, consider a weak spark as a possibility.
What to do if Kohler Command CV740 Engine starts but does not keep running?
If your Kohler Engine starts but doesn't keep running, a faulty carburetor or cylinder head gasket could be the issue. Also, check for faulty or misadjusted choke or throttle controls, a malfunctioning fuel pump with a clogged or leaking vacuum hose, or an intake system leak. Loose wires intermittently grounding the ignition kill circuit, poor fuel quality, or a restricted fuel tank cap vent might also be to blame.
Why does my Kohler Command CV740 Engine run but misses?
If your Kohler Engine runs but misses, it could be due to an incorrectly adjusted carburetor, an overheated engine, or faulty spark plugs. Other potential causes include faulty or improperly gapped ignition module(s), an incorrect crankshaft position sensor air gap, or an engaged or faulty interlock switch. Loose wires grounding the ignition kill circuit, poor fuel quality, or disconnected or loose spark plug leads could also be to blame.
Why is my Kohler Command CV740 using an excessive amount of oil?
If your Kohler Engine uses an excessive amount of oil, check for loose or improperly torqued fasteners, a blown head gasket (possibly due to overheating), or a broken breather reed. Other potential causes include a clogged, broken, or inoperative crankcase breather, an overfilled crankcase, or incorrect oil viscosity/type. Worn cylinder bore, piston rings, or valve stems/guides could also be the reason.
Why is my Kohler Command CV740 Engine leaking oil from oil seals and gaskets?
If oil leaks from the oil seals and gaskets of your Kohler Engine, it could be due to a broken breather reed (replace it) or a clogged, broken, or inoperative crankcase breather (repair or replace it). Other potential causes include loose or improperly torqued fasteners (tighten them), piston blow by or leaky valves (repair or replace leaky valve parts), or a restricted exhaust (clear the exhaust restriction).
What causes a Kohler Command CV740 to overheat?
If your Kohler Engine overheats, possible causes include a broken cooling fan (repair or replace it), excessive engine load (reduce it), or a failed or off fan belt (replace or adjust it). A faulty carburetor (replace it), high or low crankcase oil level (adjust to correct level), or a lean fuel mixture (adjust the fuel mixture) can also cause overheating. Other potential issues are low cooling system fluid level (refill it), clogged radiator or cooling system components (clean or repair), a failed or broken water pump belt (replace it), or a malfunctioning water pump (repair or replace it).
What causes a Kohler Command CV740 Engine to knock?
If your Kohler Engine knocks, consider these potential causes: excessive engine load, hydraulic lifter malfunction, incorrect oil viscosity/type, internal wear or damage, low crankcase oil level, or poor fuel quality.
Why is my Kohler Command CV740 Engine overheating?
If your Kohler Engine overheats, check for a broken cooling fan, excessive engine load, or a failed fan belt. A faulty carburetor, high or low crankcase oil level, or a lean fuel mixture could also be the cause. Additionally, inspect the cooling system fluid level and the radiator for clogs, restrictions, or leaks. Other possible issues include a failed water pump belt or a malfunctioning water pump.
General| Compression Ratio | 8.5:1 |
|---|---|
| Fuel System | Carburetor |
| Starter | Electric |
| Ignition System | Electronic |
| Engine Type | V-Twin |
| Displacement | 725 cc |
| Oil Capacity | 1.9 L (2.0 U.S. qt) |
| Lubrication | Full pressure |
| Bore | 3.27 in (83 mm) |
| Power | 24-27 HP |
Read all safety precautions and instructions carefully before operating equipment.
Instructions for safe and proper maintenance procedures.
Schedule of required maintenance tasks based on operating hours.
Recommended oil types and viscosity for engine performance.
Procedure for storing the engine when out of service for extended periods.
Guidelines for using appropriate fuel for engine operation.
Technical drawings and dimensions for engines with low-profile air cleaners.
Technical drawings and dimensions for engines with commercial mower air cleaners.
Technical drawings and dimensions for engines with heavy-duty air cleaners.
Information on locating and understanding engine identification numbers.
Key technical specifications for various engine models.
Recommended torque values for fasteners and components.
Critical clearance measurements for engine parts.
Standard torque recommendations for common fastener types.
List of suppliers for specialized tools.
Description and part numbers for essential service tools.
List of materials and aids recommended for service.
General guide to identifying and resolving engine problems.
Procedure for visually inspecting the engine before disassembly.
Guidelines for safely and effectively cleaning engine components.
Procedure to test crankcase vacuum for proper engine operation.
Method for testing cylinder compression.
Alternative test to determine if valves or rings are leaking.
Information on air cleaner systems and components.
Details and disassembly of low-profile and commercial mower air cleaners.
Details and disassembly of heavy-duty air cleaner components.
Ensuring proper connection of the breather tube.
Importance of proper cooling and methods to maintain it.
Guidelines for fuel selection and usage.
Requirements for fuel line installation and type.
Description and replacement procedure for the pulse style fuel pump.
Procedures for testing fuel system components.
Overview and component identification of carburetors.
Checklist for diagnosing and resolving carburetor-related issues.
Procedures for adjusting carburetor settings.
Considerations for operating the engine at high altitudes.
Identification of governor system components.
Procedures for adjusting governor settings.
Steps for performing the initial governor adjustment.
Adjusting governor sensitivity for optimal performance.
Specific governor arrangement for commercial mowers.
Identification of lubrication system components.
Procedure for checking and maintaining the engine oil level.
Steps for performing an oil and filter change.
Information on oil cooler maintenance and types.
Operation and function of the Oil Sentry™ system.
Inspection, service, and specifications for spark plugs.
Battery recommendations, maintenance, charging systems and tests.
Overview of electronic ignition systems and their types.
Electrical wiring diagrams for different systems.
Procedures for testing electronic ignition systems.
Guide to diagnosing and resolving starting problems.
Components and service procedures for inertia drive starters.
Components and service procedures for solenoid shift starters.
Details of starter components and inspection points.
Steps for disassembling and reassembling starter motors.
Procedures for testing starter solenoids.
Components and service procedures for retractable starters.
Identification and removal of external engine components.
Steps for draining oil, removing filter, and oil cooler.
Procedures for removing major engine components.
Disassembly procedures for internal engine parts.
Procedures for measuring and inspecting engine parts.
Reassembly of crankshaft, connecting rods, pistons, and camshaft.
Reassembly of oil pan, oil pump, oil seal, and governor.
Steps for installing ignition system and flywheel.
Procedure for reassembling cylinder heads and valve train.
Steps for installing carburetor and control systems.
Installation of air cleaner, starter, and muffler.
Final checks and testing procedures before operating the engine.
