24. SERVICE PROCEDURE 6. When installing, tighten until the packing surface of the cartridge contacts the seal surface of the filter holder, then tighten a further 3/4 – 1 turn. 7. Clean the bypass filter holder, fill new bypass filter cartridge 2 with clean engine oil, coat the packing and thread of the filter cartridge with engine oil (or coat thinly with grease), then install. 8. When installing, tighten until the packing surface of the cartridge contacts the seal surface of the filter holder, then tighten a further 3/4 – 1 turn. 9. After replacing the filter cartridge, add engine oil through oil filler port F so that the oil level is between the H and L marks on dipstick G . 10.
Run the engine at idling for a short time, then stop the engine and check again that the oil level is between the H and L marks on the level gauge. For details, see “24.3 CHECK BEFORE START- ING”. Replace the filter at least once every 6 months, even if the machine has been operated for less than 500 hours. Replace the filter at least once every 500 hours, even if the machine has been operated for less than 6 months. 3-60