Cadillac cts ユーザーズマニュアル

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3. Pull out the old engine air cleaner/filter.
4. Install a new engine air cleaner/filter, if needed. See
“Normal Maintenance Replacement Parts” later in
this section for the correct part number for the filter.
5. If the filter is replaced, reset the indicator by
pressing upward on the indicator from the bottom.
6. Reinstall the cover by reversing Steps 1 and 2.
Refer to the Maintenance Schedule to determine when to
replace the air filter.
See “Scheduled Maintenance Services” in the Index.
CAUTION:
Operating the engine with the air cleaner/filter
off can cause you or others to be burned. The air
cleaner not only cleans the air, it stops flame if
the engine backfires. If it isn’t there, and the
engine backfires, you could be burned. Don’t
drive with it off, and be careful working on the
engine with the air cleaner/filter off.
NOTICE:
If the air cleaner/filter is off, a backfire can 
cause a damaging engine fire. And, dirt can 
easily get into your engine, which will damage it.
Always have the air cleaner/filter in place when
you’re driving.