Firman P08008 Operator's Manual page 24

Maintenance - Storage
Air Filter Maintenance
(a) Carefully remove foam air filter element and wash it with liquid detergent and water only.
Squeeze dry in a clean cloth.
(b) Saturate foam air filter element with clean engine oil and squeeze in a clean cloth to remove
excess oil.
( ) Reinstall clean or new air filter element. c
Spark Plug Maintenance
Changing the spark plug will help your engine start easier and run at peak performance.
(a) Remove the spark plug boot.
(b) Remove spark plug using provided wrench.
English 23 Customer Service: 1-844-FIRMAN1