Kawasaki FX691V Troubleshooting
| Engine Model: Kawasaki FX691V |
| Engine Type: 4-cycle V-Twin cylinder OHV vertical shaft air-cooled gasoline |
| Total Displacement: 44.3 cu.in (726 cc) |
| Rated Engine Power: 22 Hp (16.4 kW) at 3600 rpm |
| Carburetor Type: Two barrel with fixed main jet |
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| Engine will not start or hard to start |
Empty gas tank - Add gasoline.
Wrong fuel grade - Change gasoline.
Air in the fuel lines - Bleed the fuel lines.
Spark plug wiring connection is defective - Check spark plug wiring connection, repair or change.
Faulty spark plug - Change spark plug.
Fuel filter is plugged - Change fuel filter.
Brake pedal not pushed down - Push the brake pedal down.
Carburetor is dirty - Wash, clean and adjust.
Bad compression - Check and change damaged parts.
Throttle cable is worn or adjusted improperly - Adjust properly or change the cable.
Air intake grill is clogged - Need to clean or wash.
Ignition system failure - Check ignition and replace faulty components.
Throttle cable is faulty or stuck - Change or clean the cable.
Clogged air filter - Service or change air filter.
Clogged or damaged fuel pump - Clean or replace fuel pump.
| Engine starts but immediately shuts off |
Damaged spark plug - Change spark plug.
Clogged or defective carburetor - Service or change carburetor.
Defective ignition coil - Ignition coil must be replaced.
Broken or bad valve springs - New valve springs need to be installed.
Valves are stuck - Clean the valves.
Insufficient engine oil - Add oil to the engine crankcase.
Engine is under excessive load - Reduce the load.
Air intake grill is clogged - Need to clean or wash.
Too lean carburetor mixture - Adjust carburetor properly.
Improper ignition timing - Set the ignition timing properly.
Valve setting is improper - Valves needs to be adjusted properly.
| Abnormal engine noise or knocking |
Low octane fuel - Change gasoline.
Engine is under excessive load - Reduce the load.
Insufficient engine oil - Fill up the oil to required level.
Low idle speed set incorrectly - Adjustment required.
Dirty or damaged fuel pump - Inspect fuel pump and change as required.
Worn main bearings or crankshaft - Worn parts replacement required.
Incorrect valve clearance - Adjust valve clearance.
Cylinder bore or piston rings are damaged - Change defective components.
Incorrectly adjusted or dirty carburetor - Adjust the carburetor correctly or clean it.
Dirty air filter element - Clean or change air filter.
Dirty or damaged fuel pump - Test fuel pump and change if necessary.
Ignition failure - Check ignition and replace faulty components.
Defective cylinder head gasket - Install new cylinder head gasket.
Burned or stuck valves - Clean or replace valves.
Push rod is worn or damaged - Replace push rod.
Damaged cylinder block components - Replace defective components.
Plugged oil filter (if equipped) - Service or replace oil filter.
| Excessive fuel consumption |
Throttle did not open fully - Replace or adjust throttle cable.
Incorrect adjustment of carburetor main jet - Adjust the carburetor main jet properly.
Spark plug is defective or loose - Change or re-tighten spark plug.
Valves are stuck, worn, or burned - Change or clean valves.
Sleeve, piston, or rings are damaged - Change defective components.
Incorrect valve clearance - Adjust valve clearance according to specifications.
| Engine consuming too much oil |
Worn seals or gaskets - Worn parts need to be replaced.
Damaged valve stems or valve guides - Valves need to be changed.
Stuck or worn piston rings - Piston rings replacement required.
Piston or cylinder liner is scuffed - Inspect liner and piston, fit new parts as necessary.
Blocked breather pipe or hose - Service or replace.
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