JLG 600A_AJ Operator Manual - Manual (Page 132)

SECTION 6 - GENERAL SPECIFICATIONS & OPERATOR MAINTENANCE
6-32 – JLG Lift – 3121204
22. Fuel Filter (Propane) - GM Engine
Interval - 3 Months or 150 hours of operation
Comments - Replace filter. Refer to Section 6.7, Propane
Fuel Filter Replacement