Kawasaki FH661V Troubleshooting
| Engine Model: Kawasaki FH661V |
| Engine Type: 4-cycle V-Twin cylinder OHV vertical shaft air-cooled gasoline |
| Total Displacement: 41.2 cu.in (675 cc) |
| Rated Engine Power: 22 Hp (16.3 kW) at 3600 rpm |
| Carburetor Type: Two-barrel with fixed main jet |
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| Engine starts hard or doesn't start |
Empty fuel tank - Fill gasoline up.
Low-quality gasoline - Change gasoline.
Air in the fuel system - Air bleeding.
Defective wiring connection of spark plug - Inspect the spark plug wire connection, replace or repair.
Spark plug is defective - Install new spark plug.
Fuel filter is dirty - Change fuel filter.
Faulty safety switch - Change damaged switch.
Carburetor is clogged - Clean the carburetor.
Bad compression - Check and change damaged parts.
Choke cable is unadjusted or damaged - Adjust correctly or change the cable.
Cooling fins are clogged - Clean and wash as required.
Ignition system is defective - Check ignition and replace faulty components.
Stuck or faulty throttle cable - Service or replace the cable.
Clogged air filter - Replace or clean air filter.
Dirty or faulty fuel pump - Check fuel pump and replace if necessary.
| Engine starts and then stalls |
Defective spark plug - Install new spark plug.
Carburetor is clogged or faulty - Clean or install new carburetor.
Defective ignition coil - Replace ignition coil as necessary.
Valve springs are weak or broken - Change valve springs.
Stuck valves - Valves need to be cleaned.
Low engine oil level - Check and refill engine oil.
Engine overloaded - Reduce load.
Cooling fins are plugged - Clean and wash as required.
Carburetor fuel mixture is too lean - Make the correct settings.
Improper ignition timing - Adjust ignition timing correctly.
Valve setting is improper - Set the valves correctly.
Low octane gasoline - Use proper gasoline.
Engine overloaded - Load reducing required.
Low engine oil level - Checking oil level and add if necessary.
Improperly adjusted low idle speed - Adjust as required.
Dirty or damaged fuel pump - Clean or install new fuel pump.
Main bearings or crankshaft failure - Need to install new components.
Excessive valve clearance - Adjust valve clearance.
Damaged cylinder bore or piston rings - Change defective parts.
Carburetor is incorrectly adjusted or dirty - Service or properly adjust carburetor.
Clogged air filter - Clean or change air filter.
Dirty or defective fuel pump - Service or change fuel pump.
Ignition failure - Check ignition and replace faulty components.
Cylinder head gasket is defective - Replace the head gasket.
Stuck or burned valves - Change or service valves.
Worn or bent push rod - Change push rod.
Cylinder block components are worn - Replace defective parts.
Oil filter is dirty (if equipped) - Service or change oil filter.
Throttle opening is not full - Adjust or change throttle cable.
Improper adjustment of carburetor main jet - Adjust the carburetor main jet properly.
Spark plug is loose or defective - Tighten or change the spark plug.
Worn, stuck, or burned valves - Replace or clean valves.
Worn sleeve, rings, or piston - Change defective components.
Valve clearance is incorrect - Check and adjust.
| Excessive engine oil consumption |
Worn gaskets or seals - Worn parts need to be replaced.
Damaged valve stems or valve guides - Valves replacement required.
Piston rings are defective or worn - Replace piston rings.
Damaged cylinder liner or piston - Check piston and liner, change as required.
Breather pipe or hose is plugged - Change or service.
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