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Consult with an authorized servicing dealer. Crank the engine with the plug removed, re-install the plug and re-start. Clean and re-gap the plug to 0.6 mm (0.024 in.). Re-start. Replace the plug with a NGK CMR5H or equivalent resistor type spark plug of the correct heat range. Set spark plug electrode gap to 0.6mm (0.024 in.). Faulty recoil starter. Fluid in the crankcase. Internal damage. Loose spark plug. Excess wear on cylinder, piston, rings. Fuel incorrect, stale, or contaminated; mixture incorrect. Check for clogged fuel filter and/or vent. Priming pump not functioning properly. The ignition switch is in “O” (OFF) position. Shorted ignition ground. Faulty ignition unit. If the plug is wet, excess fuel may be in the cylinder. The plug is fouled or improperly gapped. The plug is damaged internally or of the wrong size. NO Does the engine crank? YES NO Good compression? YES NO Does the tank contain fresh fuel of the proper grade? YES NO Is fuel visible and moving in the return line when priming? YES NO Is there spark at the spark plug wire terminal? YES Check the spark plug. Troubleshooting Guide (continued) LOW POWER OUTPUT What To Check Possible Cause Remedy Operator is overworking the unit. Carburetor mixture is too lean. Improper fuel ratio. Fallen leaves or debris on intake cover. Fan, fan cover, cylinder fins dirty or damaged. Carbon deposits on the piston or in the muffler. Clogged air cleaner element. Loose or damaged spark plug. Air leakage or clogged fuel line. Water in the fuel. Piston seizure. Faulty carburetor and/or diaphragm. Overheating condition. Improper fuel. Carbon deposits in the combustion chamber. Use a lower throttle setting. Consult with an authorized servicing dealer. Refill with clean, fresh unleaded gasoline with a pump octane of 87 or higher, mixed with a premium 2-cycle air cooled mixing oil or equivalent at a 50:1 gasoline ratio. Clean the intake cover. Clean, repair or replace as necessary. Consult with an authorized servicing dealer. Service the air cleaner element. Tighten or replace the spark plug. See page 11. Repair or replace fuel filter and/or fuel line. Replace the fuel. See page 7. Consult with an authorized servicing dealer. See above. Check fuel octane rating; check for presence of alcohol in the fuel. See page 7. Refuel as necessary. Consult with an authorized servicing dealer. Is the engine overheating? Engine is rough at all speeds. May also have black smoke and/or unburned fuel at the exhaust. Engine is knocking. Troubleshooting Guide (continued) ADDITIONAL PROBLEMS Symptom Possible Cause Remedy Clogged air filter. Clogged fuel filter. Lean fuel/air mixture. Idle speed set too low. Ignition switch turned off. Fuel tank empty. Clogged fuel filter. Water in the fuel. Shorted spark plug or loose terminal. Ignition failure. Piston seizure. Ground (stop) wire is disconnected, or switch is defective. Overheating due to incorrect spark plug. Overheated engine. Debris build-up in impeller. Loose or damaged impeller. Loose or damaged engine mounts. Blower intake or discharge ports or tubes are clogged with debris. Impeller blades are missing or damaged. Clean the air filter. Replace the fuel filter. Consult with an authorized servicing dealer. Adjust: 3000 (±300) min-1 (rpm). Reset the switch and re-start. Refuel. See page 7. Replace fuel filter. Drain; replace with clean fuel. See page 7. Clean or replace spark plug, tighten the terminal. Replace the ignition unit. Consult with an authorized servicing dealer. Test and replace as required. Idle engine until cool. Clean and regap the plug to 0.6 mm (0.024 in.). Correct plug: NGK CMR5H or equivalent resistor type spark plug of the correct range. Idle engine until cool. Clean debris from impeller as required. Inspect and replace impeller as required. Tighten or replace engine mounts as required. Inspect and remove debris. Consult with an authorized servicing dealer. Poor acceleration. Engine stops abruptly. Engine difficult to shut off. Excessive vibration. Engine overspeeding. Emission System Warranty Statement Your Warranty Rights and Obligations The California Air Resources Board, the U.S. Environmental Protection Agency and Shindaiwa Corporation are pleased to explain the exhaust and evaporative emission control system warranty on your new small off-road (non-road) engine. In California, new small off-road engines must be designed, built, and equipped to meet the State’s stringent anti-smog standards. In other states, new 1997 and later non-road engines must meet the Federal EPA’s stringent anti-smog standards. Shindaiwa Corporation must warrant the emission control system on your small off-road engine for the periods of time listed below, provided there has been no abuse, neglect, or improper maintenance of your small off-road engine. Your engine exhaust and evaporative emission control system includes parts such as the carburetor, fuel tank, the ignition system and, if equipped, the catalytic converter. These comp...

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