JLG 1850SJ Operator Manual - Manual (Page 148)

SECTION 7 - GENERAL SPECIFICATIONS & OPERATOR MAINTENANCE
7-16 – JLG Lift – 3121618
8. Hydraulic Oil
Lube Point(s) - Fill Cap
Capacity - 75 Gallons (208 liters) Tank to Full Mark
82 Gallons (310.4 L) System
Lube - HO
Interval - Check level daily. Change every 2 years or 1200
hours of operation.
9. Main Valve Filter
Lube Point(s) - Replaceable Element
Interval - Change after first 50 hours and every 6 months or
300 hours thereafter.