Gravely 988117 - HR1536FX - Manual (Page 19)

GB - 19
To clean terminals:
1. Remove battery cover.
2. Remove battery cables from terminals.
3. Clean or service battery away from unit. Remove
corrosion from battery terminals and cable
connections with wire brush, then wash with a
weak baking soda solution.
4. Apply a thin coat of dielectric grease or petroleum
jelly to terminals and cable ends to retard
corrosion.
5. Replace battery and secure with battery cover.
CHECK ALL BELTS
Check all belts for wear or damage every 25 hours. If
belts slip, check for damaged belts or tensioner.
MOWER BLADES
Check mower blades for wear every 25 hours of
operation. Ensure blade hardware is tightened to
115-125 lbf-ft (156-169.5 N•m) of torque.
CLEAN AIR CLEANER FOAM ELEMENT
See engine manual for detailed instructions.
GENERAL LUBRICATION
Apply a small amount of oil to the pivot points as
required for smooth operation (Figure 8).
Apply high quality lithium based grease to all lube
fittings every 50 hours of operation.
NOTE: The mower spindle assembly is maintenance
free.
CHANGE ENGINE OIL
Open the petcock to drain oil through oil drain hole on
left side of engine. See engine manual for additional
instructions.
CHECK FUEL FILTER
See engine manual for detailed instructions.
CHECK SPARK PLUG
See engine manual for detailed instructions.
CHECK MUFFLER
Check muffler for damage or wear. Replace if
necessary.
CLEAN AIR CLEANER PAPER ELEMENT
See engine manual for detailed instructions.
CHANGE HYDRAULIC FLUID AND FILTER
Change hydraulic fluid and filter after the first 50 hours
of operation. They both should be changed every 500
hours thereafter.
To change the filter:
1. Place open container under tank. The container
should be able to hold at least 4 quarts of oil.
2. Remove tank from frame and allow tank to tip
rearward to allow oil to drain from system
(Figure 9).
3. After most of the oil has drained, turn the tank
upside down counterclockwise to allow the rest of
the oil to drain.
4. Clean around filter.
5. Turn filter counterclockwise to remove.
6. Fill the oil filter with about 8 oz. (236 ml) of
hydraulic oil.
7. Apply a thin coat of oil onto seal of new filter.
8. Install new filter and hand tighten securely.
9. Fill system with about 44 oz. (1.3L) fresh, clean
hydraulic oil. See Specifications for proper type.
10. Run-in hydraulic system to bleed and lubricate
components. See below.
Figure 8
1. Wheel Bearings
2. Flange Bushings
1
2
2
1
OG1480
1
1