21(6)5) Set the engine level, and gradually fill up to upper limit mark (6) with new oil.6) After filling, tightly secure oil cap, so that it will not loosen and cause leaks. If oilcap is not tightly secured, it may leak.External mark(upper limit)Internalsteppedsection(upper limit)Internal steppedsection (lower limit)Externalmark(lowerlimit)POINTS ON OIL- Never discard replaced engine oil in garbage, earth or sewage ditch. Disposal of oil is regulated by law.In disposal, always follow the relevant laws and regulations. For any points remaining unknown, contact Authorized Service Agent.- Oil will deteriorate even when it is kept unused. Perform inspection and replacement at regular intervals (replace with new oil every6 months).Cleaning the air cleanerDANGER: Inflammables strictly prohibitedCheck and clean the air cleaner daily or every 10 operating hours.- Turn the choke lever fully to the close side, and keep the carburetor free fromdust or dirt.- Loosen the fixing bolt.- Remove the air cleaner cover by pulling its bottom side.- Remove the elements and tap them to remove dirt.- If the elements are heavily contaminated:Remove the elements, immerse them in warm water or in water-diluted neutraldetergent, and dry them completely. Do not squeeze or rub them when washing.- Before attaching the elements, be sure to dry them completely. Insufficient dryingof the elements may lead to difficult startup.- Wipe out oil adhering around the air cleaner cover and the breather part withwaste cloth.- Fit the element (sponge) into the element (felt).Fit the elements into the plate so that the sponge faces the air cleaner cover.- Immediately attach the cleaner cover and tighten it with fixing bolts. (Inremounting, first place the upper claw, and then the lower claw.)NOTICE:- Clean the elements several times a day, if excessive dust adheres to it. Dirtyelements reduce engine power and make starting engine difficult.- Remove oil on the elements. If operation continues with the elementsremaining not cleared of oil, oil in the air cleaner may fall outside, resulting incontamination of the environment.- Do not put the elements on the ground or dirty place. Otherwise they pick updirt or debris and it may damage the engine.- Never use fuel for cleaning the elements. Fuel may damage them.Air cleanercoverElement(sponge)PlateChoke leverBreather partElement (felt)Fixing bolt