If four numbers (1 to 4) are printed around the outside of the filter, use the following procedure to tighten the filter. Spin the filter on until its seal lightly seats against the block, and note which number is at the bottom. Tighten the filter by turning it clockwise three numbers from the one you noted. For example, if number 2 is at the bottom when the seal is seated, tighten the filter until the number 1 comes around the bottom.
Number when rubber seal is seated | 1 | 2 | 3 | 4
Number after tightening | 4 | 1 | 2 | 3
After installation, fill the engine with oil up to the specified level, run the engine for more than 3 minutes, then check for oil leakage. |