13Inspection and refill of engine oilPerform the following procedure, with the engine cooled down.–Assure that the engine is on a flat horizontal surface and confirm if the oil level is between the lower or upper limit of the oil indicator.–If the oil level is below the lower limit, remove the oil cap and add oil.–The area surrounding the external marks is transparent, so the amount of oil inside can be checked without having to remove the oil cap.–However, if oil pipe becomes extremely dirty, visibility may be lost, and oil level will have to be checked against stepped section on inside ofoil pipe.You may need to refill oil approximately every 10 operating hours (every 10 refuelings).–If the oil changes in color or mixes with dirt, replace it with new one. (For the interval and method of replacement, refer to P 22.)Recommended oil: SAE 10W-30 oil of API Classification, Class SF or higher (4-stroke engine for automobile)Oil volume: Approx. 0.10LNOTE: If the engine is not positioned as illustrated on a horizontal surface, an inaccurate indication of oil level may occur and oil may beoverfilled. Filling oil above the upper limit may cause oil contamination and/or white smoke.Replacement of oil: “Oil cap”Remove dust or dirt near the oil refill port, and detach the oil cap.–Keep the detached oil cap free of sand or dust. Otherwise, any sand or dust adhering to the oil cap may cause irregular oil circulation or–wear on the engine parts, which will result in troubles.BEFORE START OF OPERATION(1) Keep the engine level, and detach the oil cap.(2) Fill with oil to upper limit mark.Use oil bottle when filling.(3) Securely tighten the oil cap. Insufficient tightening may cause oil leakage.Upper limitLower limitOil