Kawasaki FR691V Troubleshooting
| Engine Model: Kawasaki FR691V |
| 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 (15.4 kW) at 3600 rpm |
| Carburetor Type: Float with fixed main jet |
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| Engine won't start or difficult to start |
Empty fuel tank - Fill gasoline up.
Low-quality gasoline - Change gasoline.
Dirt and debris in fuel system - Remove debris and dirt.
Spark plug wiring connection is damaged - Check the spark plug wire connection, repair or replace.
Defective spark plug - Spark plug need to be replaced.
Plugged fuel filter - Fuel filter needs to be replaced.
Brake pedal not depressed - Press the brake pedal.
Carburetor incorrectly set - Set carb correctly.
Bad compression - Check and change damaged parts.
Damaged or not adjusted choke cable - Replace cable or adjust properly.
Clogged cooling fins - Wash or clean as required.
Defective ignition - Check ignition system and replace faulty parts.
Throttle cable is stuck or faulty - Replace or service the cable.
Dirty air filter element - Change or clean air filter.
Clogged or defective fuel pump - Service or replace fuel pump.
| Engine starts but immediately stops |
Spark plug is damaged - Replace spark plug.
Carburetor is dirty or defective - Service or change carburetor.
Faulty ignition coil - Install a new ignition coil.
Bad or broken valve springs - Replace valve springs.
Stuck valves - Service the valves.
Engine oil level low - Fill up the engine oil.
Engine is overloaded - Reduce load.
Cooling fins are clogged - Need to clean or wash.
Carburetor is running lean - Use proper settings.
Ignition timing is improper - Adjust ignition timing as required.
Wrong valve setting - Adjust valves correctly.
Stale fuel - Use correct fuel.
Engine is overloaded - Reduce the load.
Insufficient engine oil - Checking oil level and add if necessary.
Too low idle RPM - Adjust as required.
Fuel pump is damaged or dirty - Clean or change fuel pump.
Worn main bearings or crankshaft - Change or repair worn components.
Improper valve clearance - Need to adjust valve clearance.
Piston rings or cylinder bore are worn - Change faulty parts.
Carburetor is improperly adjusted or dirty - Carburetor needs to be adjusted correctly or cleaned.
Plugged air filter - Clean or change air filter.
Clogged or damaged fuel pump - Service or change fuel pump.
Ignition system failure - Test ignition and replace failed parts.
Cylinder head gasket is defective - Change cylinder head gasket.
Burned or stuck valves - Change or clean valves.
Damaged or worn push rod - Change push rod.
Damaged cylinder block components - Change defective components.
Plugged oil filter (if equipped) - Replace or service oil filter.
| Engine uses too much fuel |
Throttle is not fully open - Change or adjust throttle cable.
Incorrect carburetor main jet adjustment - Adjust it properly.
Spark plug is loose or defective - Change or re-tighten spark plug.
Valves are worn, stuck, or burned - Change or clean valves.
Worn piston, rings, or sleeve - Replace defective components.
Incorrect valve clearance - Adjust valve clearance.
Gaskets or seals are excessively worn - To repair leaks, replace worn parts.
Valve stems and guides are worn - Need to replace the valves.
Damaged or seized piston rings - Change the piston rings as required.
Damaged piston or cylinder liner - Check piston and liner, replace as required.
Breather hose or pipe is clogged - Change or clean.
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