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| Home / Engines / Kohler Engines / Kohler CH732 |
Kohler Command PRO CH732 Problems
| Engine Model: Kohler Command PRO CH732 |
| Engine Type: 4-cycle 2-cylinder horizontal shaft air-cooled gasoline engine |
| Total Displacement: 46 cu.in (747 cc) |
| Rated Engine Power: 23.5 Hp (17.5 kW) at 3600 rpm |
| Fuel System: Two-barrel carburetor with fixed main jet |
| Engine hard to start or will not start |
No gasoline in tank - Add fuel.
Improper fuel grade - Use quality fuel.
Water or air in fuel system - Remove air or water from system.
Defective spark plug wire connection - Check the spark plug wire connection, repair or replace.
Damaged spark plug - Replace spark plug.
Dirty fuel filter - Change fuel filter.
Brake pedal not depressed - Press the brake pedal.
Wrong carburetor adjustment - Adjusting carburetor correctly.
Poor compression - Inspect and replace wear parts.
Not adjusted or damaged throttle cable - Replace cable or adjust correctly.
| Irregular engine running |
Cooling fins are clogged - Need to clean or wash.
Ignition system malfunction - Test ignition and replace failed parts.
Defective or stuck choke cable - Replace or clean the cable.
Air filter is blocked - Service or change air filter.
Dirty or faulty fuel pump - Check fuel pump and replace if necessary.
| Engine starts and stops |
Spark plug is faulty - Install new spark plug.
Clogged or faulty carburetor - Service or replace carburetor.
Ignition coil is damaged - Change ignition coil as required.
Loose or broken valve springs - New valve springs need to be installed.
Stuck valves - Clean the valves.
| Engine overheats |
Insufficient engine oil - Check and refill engine oil.
Engine is overloaded - Reduce engine load.
Clogged cooling fins - Need to clean or wash.
Carburetor fuel mixture is too lean - Adjust carburetor correctly.
Ignition timing is improper - Set the ignition timing correctly.
Valve setting is incorrect - Set the valves correctly.
| Engine noises or knocks |
Low octane gasoline - Change gasoline.
Engine overloaded - Load reducing is recommended.
Engine oil level low - Fill the crankcase with engine oil.
Incorrectly set low idle speed - Adjust the low idle speed.
Dirty or damaged fuel pump - Check fuel pump and change if required.
Main bearings or crankshaft are worn out - Have bearings or crankshaft replaced.
Improper valve clearance - Check and adjust.
Cylinder bore or piston rings are damaged - Change faulty parts.
| Low engine power |
Clogged or improperly adjusted carburetor - Service or correctly adjust carburetor.
Air filter is blocked - Change or service air filter.
Clogged or defective fuel pump - Check fuel pump and replace if necessary.
Ignition system is defective - Check ignition and replace faulty components.
Cylinder head gasket is blown - Change cylinder head gasket.
Stuck or burned valves - Change or service valves.
Push rod is worn or defective - Replace push rod.
Worn cylinder block components - Replace defective parts.
Plugged oil filter (if equipped) - Replace or clean oil filter.
| Engine uses too much fuel |
Choke is not fully open - Check choke cable and adjust it.
Carburetor main jet is improperly adjusted - Adjust the carburetor main jet correctly.
Spark plug is loose or faulty - Change or re-tighten spark plug.
Stuck, worn, or burned valves - Replace or service valves.
Worn sleeve, piston, or rings - Replace defective parts.
Valve clearance is incorrect - Check and adjust.
| Excessive oil consumption |
Damaged gaskets or seals - Replace defective parts.
Valve guides and stems are worn - Replace the valves.
Piston rings are seized or worn - Replace piston rings.
Damaged piston or cylinder liner - Check liner and piston, install new components as required.
Plugged breather hose or pipe - Clean or change.
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