Kawasaki FX651V Troubleshooting
| Engine Model: Kawasaki FX651V |
| Engine Type: 4-cycle V-Twin cylinder OHV vertical shaft air-cooled gasoline |
| Total Displacement: 44.3 cu.in (726 cc) |
| Rated Engine Power: 20.5 Hp (15.3 kW) at 3600 rpm |
| Carburetor Type: Two barrel with fixed main jet |
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| Engine starts up hard or will not start |
Empty gas tank - Fill gasoline up.
Improper fuel grade - Change gasoline.
Clogged fuel system - Remove clogging.
Faulty spark plug wire connection - Inspect spark plug wiring connection, change or repair.
Spark plug is damaged - Replace spark plug.
Plugged fuel filter - Change fuel filter.
Brake pedal not pushed down - Push the brake pedal down.
Carburetor components worn out - Repair or replace parts.
Poor engine compression - Check cylinder block and replace damaged components.
Unadjusted or worn throttle cable - Adjust correctly or replace the cable.
Air intake grill is clogged - Clean and wash as required.
Ignition system is defective - Check ignition system and replace faulty parts.
Choke cable is stuck or defective - Change or service the cable.
Clogged air filter - Change or service air filter.
Clogged or defective fuel pump - Inspect fuel pump and change as required.
| Engine starts but stalls suddenly |
Spark plug is damaged - Replace spark plug.
Carburetor is dirty or defective - Clean or replace carburetor.
Ignition coil is defective - Ignition coil should be replaced.
Damaged or weak valve springs - Valve springs need to be changed.
Valves are stuck - Valves need to be cleaned.
Engine oil insufficient - Check and refill engine oil.
Engine overload - Load reducing required.
Air intake screen is plugged - Clean and wash as required.
Carburetor mixture is too lean - Use proper settings.
Improper ignition timing - Set the ignition timing properly.
Wrong valve setting - Valves needs to be adjusted properly.
| Abnormal engine noise or knocking |
Low octane gasoline - Change gasoline.
Excessive engine load - Load reducing required.
Insufficient engine oil - Fill the crankcase with engine oil.
Low idle speed set incorrectly - Adjustment required.
Fuel pump is dirty or defective - Service or change fuel pump.
Worn crankshaft or main bearings - Worn parts replacement required.
Valve clearance is incorrect - Adjustment procedure required.
Cylinder bore or piston rings are damaged - Replace faulty parts.
Carburetor is dirty or improperly adjusted - Clean or properly adjust carburetor.
Plugged air filter - Replace or clean air filter.
Dirty or damaged fuel pump - Test fuel pump and change if necessary.
Defective ignition system - Test ignition and replace failed parts.
Damaged cylinder-head gasket - Replace the gasket as required.
Valves are burned or stuck - Replace or clean valves.
Push rod is worn or defective - Replace push rod.
Faulty cylinder block components - Defective parts need to be replaced.
Plugged oil filter (if equipped) - Clean or change oil filter.
Throttle not fully open - Check throttle cable and adjust as required.
Incorrect adjustment of carburetor main jet - Adjust main jet as required.
Spark plug is defective or loose - Tighten or change the spark plug.
Valves are stuck, worn, or burned - Service or change valves.
Sleeve, rings, or piston are damaged - Replace faulty parts as required.
Valve clearance is improper - Adjust valve clearance according to specifications.
| Excessive engine oil consumption |
Gaskets or seals may be damaged - Worn parts need to be replaced.
Worn valve stems and valve guides - Replace the valves.
Stuck or defective piston rings - Have piston rings replaced.
Piston or cylinder liner is damaged - Inspect liner and piston, replace as necessary.
Breather hose or pipe is clogged - Replace or service.
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