JLG 450A Operation And Safety Manual page 141

SECTION 7 - GENERAL SPECIFICATIONS & OPERATOR MAINTENANCE
15. Fuel Filter (Propane) - GM Engine
Interval - 3 Months or 150 hours of operation
Comments - Replace filter. Refer to Section 7.5, Propane Fuel
Filter Replacement (GM Engine)
7-30
16. Charge Filter
Interval - Change after first 50 hrs. and every 6 months or 300
hrs. thereafter.
Comments - Remove the engine tray retaining bolt and pull
out engine tray to gain access.
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