10 ENGLISH12► 1. Long/short pipe 2. Blower nozzle6. Make sure all clamps are tight. Check if the trottlevalve moves correctly along with the throttle movement.If the throttle cannot be fully pulled or the throttledoes not return to the correct position, refer to theMAINTENANCE section for throttle valve adjustment.BEFORE STARTING THEENGINEChecking and refill of engine oilCAUTION: When refilling with engine oil,stop the engine and wait for the engine to cooldown. Otherwise skin burn may result.NOTICE: Use of deteriorated oil will causeirregular start-up.NOTICE: Remove dust or dirt near the oil refillport before detaching the oil cap. Also, keep thedetached oil cap free of sand or dust. Otherwise,any sand or dust adhering to the oil cap may causeirregular oil circulation or wear on the engine parts,which will result in troubles.12► 1. Upper limit mark 2. Lower limit markInspectionPut the blower on a flat surface and remove the oil cap.Make sure that the oil level is within the upper and lowerlimit marks. If the oil is not up to the lower limit, fill upwith new oil.Change the oil whenever it becomes dirty or signifi-cantly changes color. (Refer to “Replacing engine oil”for the oil change procedure and frequency.)RefillPut the blower on a flat surface and remove the oil cap.Fill the oil up to the upper limit of the oil level gauge.On average, engine oil needs to be added after every20 hours of operation (every 10 – 15 refuellings).