Kawasaki FR651V Troubleshooting
| Engine Model: Kawasaki FR651V |
| Engine Type: 4-cycle V-Twin cylinder OHV vertical shaft air-cooled gasoline |
| Total Displacement: 44.3 cu.in (726 cc) |
| Rated Engine Power: 18.8 Hp (14.1 kW) at 3600 rpm |
| Carburetor Type: Float with fixed main jet |
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| Engine hard to start or will not start |
Gas tank is empty - Fill fuel up.
Improper fuel grade - Change fuel.
Dirty fuel lines - Inspect and clean.
Spark plug wire is loose or disconnected - Inspect spark plug wiring connection, change or repair.
Spark plug is faulty - Replace spark plug.
Fuel filter is clogged - Replace fuel filter.
Brake pedal not pushed down - Push the brake pedal down.
Carburetor is not working properly - Inspect and adjust.
Engine has bad compression - Check cylinder block and change wear parts.
Throttle cable is worn or adjusted improperly - Adjust correctly or change the cable.
Cooling fins are blocked - Clean and wash as required.
Defective ignition - Inspect ignition system and change faulty parts.
Throttle cable is stuck or faulty - Service or change the cable.
Plugged air filter - Clean or replace air filter.
Fuel pump is damaged or dirty - Check fuel pump and replace if necessary.
| Engine starts but then stalls |
Damaged spark plug - Install new spark plug.
Carburetor is clogged or faulty - Replace or service carburetor.
Ignition coil is not working - Ignition coil must be replaced.
Valve springs are weak or broken - Replace valve springs.
Valves sticking - Service the valves.
Engine oil level is low - Need to add engine oil.
Engine overloaded - Reduce engine load.
Air intake screen is plugged - Clean and wash as required.
Too lean carburetor mixture - Set the carburetor properly.
Incorrect ignition timing - Set the ignition timing correctly.
Improper valve setting - Valves needs to be set correctly.
| Abnormal engine noise or knocking |
Low octane gasoline - Change fuel.
Engine overloaded - Load reducing is recommended.
Insufficient engine oil - Checking oil level and add if necessary.
Low idle speed setting is not correct - Adjust the low idle speed.
Fuel pump is dirty or defective - Check fuel pump and replace if necessary.
Worn crankshaft or main bearings - Repair or replace defective parts.
Improper valve clearance - Check and adjust.
Worn cylinder bore or piston rings - Replace defective components.
Dirty or incorrectly adjusted carburetor - Adjust the carburetor correctly or clean it.
Dirty air filter element - Clean or change air filter.
Fuel pump is faulty or clogged - Test fuel pump and change if necessary.
Ignition failure - Inspect ignition system and change failed components.
Defective cylinder head gasket - Install new head gasket.
Valves are burned or stuck - Change or service valves.
Bent or worn push rod - Install a new push rod.
Damaged cylinder block parts - Replace defective parts as required.
Oil filter is blocked (if equipped) - Change or clean oil filter.
Insufficient throttle opening - Adjust or replace throttle cable.
Incorrect adjustment of carburetor main jet - Adjust main jet as required.
Spark plug is loose or defective - Tighten or replace spark plug.
Stuck, worn, or burned valves - Clean or change valves.
Worn sleeve, piston, or rings - Replace defective components.
Excessive valve clearance - Adjust to proper valve clearance.
| Engine using too much oil |
Worn seals or gaskets - Replace defective parts.
Worn valve guides and valve stems - Replace defective valves.
Piston rings are defective or worn - Have piston rings replaced.
Scuffed cylinder liner or piston - Inspect liner and piston, change as necessary.
Breather pipe or hose is plugged - Clean or replace.
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