Service as Required Replacing Axial Seal Air Cleaner Filter Element IMPORTANT: ALWAYS REPLACE primary air cleaner element when air restriction indicator (A) shows a vacuum of 625 mm (25 in.) H 2 O, is torn, or visibly dirty. RG8719B –UN–03SEP99 NOTE: This procedure applies to John Deere 2-stage axial seal air cleaner kits. Refer to manufacturers’ instructions for servicing air cleaners not supplied by John Deere. Air restriction Indicator Continued on next page OURGP11,000013A –19–21NOV03–1/2 40-6 021604 PN=179