JLG 4017 Operator Manual - Manual (Page 102)

Section 6 - Lubrication & Maintenance
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Air Intake System
A. Air Filter Restriction Indicator Check
1. Perform “Shut-Down Procedure” on page 3-4.
2. Open the engine cover.
3. Locate air cleaner (1) and check restriction indicator (2). If red band is visible,
filter(s) must be replaced.
4. Remove dust from vacuator valve (3) by squeezing bottom of valve to allow
loose particles to fall out.
5. Locate precleaner (10) and loosen wing nut (8) and remove cover (9) from
precleaner canister.
6. Remove dust from bowl.
7. Replace bowl and cover.
8. Close and secure the engine cover.
8
OW1150
OW1010
OZ0390
1
8
9
10
3
4
6
7
2
5