Gravely Pro-Master 252 Owner's/Operator's Manual page 21

Interval Task
Check
Cooling
Each
System
Use
(992215, 216)
Every Check Mower
25 Blades
Hours
Every Lubricate
50 Front Axle
Hours and Pivot
Points
Clean Battery
Check
Fasteners
Every
Check All
100
Belts
Hours
Grease Front
Axle Caster
Every Pivots
400
Hours Change
Hydraulic Oil
and Filter*
*Change hydraulic fluid and filter after the first 75 hours of operation and then every 400
hours.
Action
IMPORTANT: To avoid damaging the radiator, DO NOT USE
high-pressure water to clean the radiator.
Check cooling system for dirt and debris in radiator screen,
oil cooler, hoses, fan, etc. Refer to Engine Manual for
detailed instructions.
Ensure mower blade hardware is tightened to 115 – 160 lbf-ft.
(156 – 217 N•m). Check mower blades for wear. Sharpen or
replace mower blades as needed (see Sharpening Mower
Blade on page 24).
Oil all pivot points, pin connections, and apply grease to front
axle grease zerk (see Lubricating Unit on page 22).
Keep battery and battery terminals clean (see Cleaning the
Battery (Figure 10) on page 23).
Check mower blade mounting hardware and all other
fasteners. Replace missing or damaged fasteners. Tighten all
nuts and bolts to their correct torque value.
Replace worn or deteriorated belts.
• Check mower drive belt. See Mower Drive Belt on
page 29 for belt location.
• Check PTO belt. See PTO Belt on page 28 for belt
location.
• Check transmission belt. See Transmission Belt on
page 29 for belt location.
• Check radiator fan belt. Refer to Engine Manual
(992215, 216).
Repack front axle caster pivots (see Lubricating Unit on
page 22).
See Changing Hydraulic Oil and Filter on page 33.
GB - 21