JLG 4017RS Operator Manual - Manual (Page 129)

Section 7 - Lubrication and Maintenance
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B. Element Change (as restriction indicator indicates)
If Air Filter Restriction Indicator remains on after start up or illuminates while operating
machine, perform the following:
1. Perform “Shut-Down Procedure” on page 4-3.
2. Unlock air cleaner cover (3), turn counterclockwise and remove from air cleaner
canister (4).
3. Remove outer primary element (5) and inspect for damage. Damaged elements
should not be reused.
4. Thoroughly clean the interior of the air cleaner canister and vacuator valve.
5. Replace inner safety element (6) after every third primary element change. If
replacing the inner safety element at this time, carefully slide the element out and
replace with new element.
6. Slide the new primary element over the inner element making sure the sealing edge
is flush with the base of the air cleaner.
7. Position air cleaner cover in place, turn clockwise and lock into position.
8. Close and secure engine cover.
Note: An inner safety element should never be washed or reused. Always install a new
element.