1) Start the engine and allow it to warm up to normal operating temperature. 2) With the engine idling, turn the pilot screw in or…

1) Visually inspect the spark plug. Discard the plug if the insulator is cracked or chipped. 2) Remove carbon or other deposits with a stiff…

1) Remove the four cylinder head cover bolt, cylinder head cover and gasket. 2) Set the piston at top dead center of the compression stroke…

Dual element, cyclone type: 1) Remove the nut, air cleaner cover and wing nut. Remove the air cleaner elements and separate them. Carefully check both…

1) With the engine running, disconnect the yellow lead from the engine switch, and ground the lead against the engine. The oil alert lamp should…

1/2 Reduction (Centrifugal clutch type): 1) Remove the oil filler cap/dipstick, and drain bolt. Allow the oil to drain completely. 2) Reinstall the drain bolt,…

Note 1) Remove the oil filler cap/dipstick and drain bolt. Allow the oil to drain completely. 2) Reinstall the drain bolt, and tighten it to…

For any inspection items in the table below that are also given in the operation manual, follow the instructions given in the operation manual.  

a. General symptom and possible causes b. Hard starting c. Oil alert system Caution: Never start the engine when the oil has been drained. Note:…