JLG 680S Operator Manual - Manual (Page 107)

SECTION 6 - GENERAL SPECIFICATIONS & OPERATOR MAINTENANCE
3121233 – JLG Lift – 6-23
4. Hydraulic Return Filter
Interval - Change after first 50 hrs. and every 6 months or
300 hrs. thereafter or as indicated by Condition Indicator.
5. Hydraulic Charge Filter
Interval - Change after first 50 hrs. and every 6 months or
300 hrs. thereafter or as indicated by Condition Indicator
(if equipped).