Kawasaki FS691V Troubleshooting
| Engine Model: Kawasaki FS691V |
| Engine Type: 4-cycle V-Twin cylinder OHV vertical shaft air-cooled gasoline |
| Total Displacement: 44.3 cu.in (726 cc) |
| Rated Engine Power: 20.7 Hp (15.4 kW) at 3600 rpm |
| Carburetor Type: Single barrel with fixed main jet |
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| Engine difficult to start or won't start |
No gasoline in tank - Fill it up.
Low-quality gasoline - Use correct gasoline grade.
Air in fuel system - Bleed fuel system.
Disconnected or loose spark plug wire - Inspect spark plug wiring connection, change or repair.
Faulty spark plug - Replace spark plug.
Clogged fuel filter - Fuel filter needs to be replaced.
Faulty safety switch - Change damaged switch.
Carburetor is not working properly - Inspect and adjust.
Poor engine compression - Check cylinder block and replace damaged components.
Throttle cable is adjusted improperly or worn - Adjust properly or change the cable.
Cooling fins are blocked - Need to clean or wash.
Ignition system is defective - Check ignition and replace faulty components.
Faulty or stuck choke cable - Service or replace the cable.
Clogged air filter - Clean or change air filter.
Fuel pump is defective or dirty - Clean or install new fuel pump.
| Engine starts and stops suddenly |
Spark plug is damaged - Replace spark plug.
Carburetor is dirty or defective - Carburetor needs to be replaced or cleaned.
Faulty ignition coil - Ignition coil must be replaced.
Weak or damaged valve springs - Change valve springs.
Valves sticking - Valves need to be cleaned.
Engine oil level low - Fill up the oil to required level.
Engine overload - Load reducing required.
Air intake screen is blocked - Need to clean or wash.
Carburetor mixture is too lean - Set the carburetor properly.
Bad ignition timing - Set the ignition timing properly.
Improper valve setting - Valves needs to be adjusted properly.
Stale or low octane fuel - Use proper gasoline.
Engine is running overloaded - Load reducing required.
Engine oil level low - Fill up the engine oil.
Wrong adjustment of low idle speed - Correct idle adjustment.
Dirty or damaged fuel pump - Clean or change fuel pump.
Worn main bearings or crankshaft - Have bearings or crankshaft replaced.
Valve clearance is wrong - Check and adjust.
Cylinder bore or piston rings are damaged - Replace faulty parts.
Carburetor is improperly adjusted or dirty - Adjust the carburetor correctly or clean it.
Air filter is blocked - Replace or service air filter.
Fuel pump is defective or dirty - Service or change fuel pump.
Ignition system is defective - Check ignition and replace faulty components.
Damaged cylinder-head gasket - Replace the gasket as required.
Burned or stuck valves - Clean or change valves.
Worn or bent push rod - Change push rod.
Cylinder block parts are worn out - Replace defective components as required.
Plugged oil filter (if equipped) - Service or change oil filter.
Choke is not fully open - Check choke cable and adjust it.
Incorrect adjustment of carburetor main jet - Adjust main jet as required.
Spark plug is loose or defective - Spark plug need to be tightened or replaced.
Stuck, worn, or burned valves - Change or clean valves.
Rings, sleeve, or piston are damaged - Replace faulty components as required.
Valve clearance is improper - Check and adjust.
Worn gaskets or seals - To repair leaks, replace worn parts.
Valve guides and stems are worn - Replace defective valves.
Stuck or defective piston rings - Piston rings need to be replaced.
Cylinder liner or piston is damaged - Check liner and piston, install new components as required.
Breather hose or pipe is clogged - Clean or change.
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