Kawasaki FD671D Troubleshooting
| Engine Model: Kawasaki FD671D |
| Engine Type: 4-cycle V-Twin cylinder OHV horizontal shaft liquid-cooled gasoline |
| Total Displacement: 45.5 cu.in (745 cc) |
| Rated Engine Power: 20.5 Hp (15.3 kW) at 3600 rpm |
| Carburetor Type: Float with fixed main jet |
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| Engine starts hard or will not start |
Empty fuel tank - Add fuel.
Low-quality gasoline - Change gasoline.
Air in the fuel lines - Bleed the fuel lines.
Disconnected or loose spark plug wire - Inspect spark plug wiring connection, change or repair.
Defective spark plug - Install new spark plug.
Dirty fuel filter - Fuel filter needs to be replaced.
Safety contact for brake pedal defective - Install new part.
Wrong carburetor adjustment - Adjusting carburetor correctly.
Poor cylinder compression - Check cylinder block and change worn parts.
Damaged or not adjusted choke cable - Adjust properly or replace the cable.
Clogged cooling fins - Wash or clean as required.
Ignition system failure - Inspect ignition system and change faulty parts.
Stuck or defective throttle cable - Clean or replace the cable.
Air filter element is clogged - Clean or replace air filter.
Clogged or damaged fuel pump - Clean or install new fuel pump.
| Engine stops after starting |
Defective spark plug - Change spark plug.
Carburetor is faulty or clogged - Service or change carburetor.
Ignition coil is faulty - Ignition coil must be replaced.
Worn or loose valve springs - Replace valve springs.
Valves sticking - Clean the valves.
Engine oil level is insufficient - Check and refill engine oil.
Engine is running overloaded - Reduce load.
Cooling fins are plugged - Need to clean or wash.
Too lean carburetor mixture - Set the carburetor correctly.
Ignition timing is improper - Adjust ignition timing correctly.
Incorrect valve setting - Set the valves correctly.
Low octane gasoline - Use correct fuel.
Engine overload - Reduce load.
Not enough engine oil - Check and refill engine oil.
Incorrectly set low idle speed - Adjust idle speed.
Fuel pump is dirty or defective - Clean or change fuel pump.
Crankshaft or main bearings failure - Have bearings or crankshaft replaced.
Valve clearance is incorrect - Adjustment procedure required.
Damaged piston rings or cylinder bore - Change defective parts.
Dirty or incorrectly adjusted carburetor - Service or properly adjust carburetor.
Air filter element is clogged - Clean or change air filter.
Fuel pump is faulty or clogged - Clean or replace fuel pump.
Ignition system failure - Inspect ignition system and change faulty parts.
Damaged cylinder-head gasket - Change cylinder head gasket.
Stuck or burned valves - Service or change valves.
Worn or defective push rod - Push rod should be replaced.
Damaged cylinder block components - Replace defective components.
Oil filter element is clogged (if equipped) - Service or replace oil filter.
Insufficient throttle opening - Adjust or replace throttle cable.
Carburetor main jet is improperly adjusted - Adjust main jet as required.
Spark plug is faulty or loose - Tighten or replace spark plug.
Stuck, burned, or worn valves - Clean or replace valves.
Sleeve, rings, or piston are damaged - Replace faulty components.
Valve clearance is incorrect - Adjust valve clearance.
Worn gaskets or seals - Defective components must be replaced.
Valve stems or guides are damaged - Need to replace the valves.
Stuck or worn piston rings - Change piston rings.
Cylinder liner or piston is worn - Check piston and liner, change as required.
Breather hose or pipe is clogged - Replace or clean.
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