Specifications

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 32. Run the engine at "IDLE" for 5 minutes for every
hour of actual spraying time. This helps to prevent
damage to the engine. NOTE: After proper idle
time, turn off the electric fuel pump.
 33. Close the gasoline valve located at the carburetor
and let engine run on "IDLE" until it runs out of gas.
 34. Turn the throttle control switch on the instrument
panel from "IDLE" to "OFF". Turn the engine switch
to the "OFF" position.