1. If four numbers or marks (1 to 4 or ▼ to ▼▼▼▼) 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 or mark is at the bottom.
   - Tighten the filter by turning it clockwise three numbers or marks 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 or Mark when rubber seal is seated | 1 or ▼ | 2 or ▼▼ | 3 or ▼▼▼ | 4 or ▼▼▼▼
Number or Mark after tightening | 4 or ▼▼▼▼ | 1 or ▼ | 2 or ▼▼ | 3 or ▼▼▼

1. 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.