Service And Adjustments - Gravely ZT HD48 Operator's Manual

Period Service
Check Air FIlter
Every
Lubricate Unit
50
Hours
Check Brake Gap
Clean Battery
Every
Check Fasteners
100
Hours
Check Belts
Change Hydraulic Fluid
Every
and Filter
400
Hours
*Change hydraulic fluid and filter after the first 75 hours of operation and then
every 400 hours.
Gravely Dealers will provide any service which
may be required to keep your unit operating at
peak efficiency. Should engine service be
required, it can be obtained from a Gravely
Dealer or the engine manufacturer's
authorized service center.
WARNING: AVOID INJURY.
Read and understand entire
Safety section before proceeding.
CAUTION: HOT SURFACES
may result in injury. DO NOT
touch engine or drive parts which
are hot from operation. Allow
parts to cool before servicing.
Task
Check air filter for dirt. Clean as required. Follow
Engine Manual for maintenance schedule.
Oil all pivot points and pin connections. Grease
lube fittings. See Lubricate Unit on page 22.
Adjust gap if necessary. See Adjusting the Parking
Brake on page 24.
Keep battery and its terminals clean. See Clean
Battery on page 21
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. See Replacing
Mower Belts on page 25 and on page 26.
Drain hydraulic fluid tank, replace hydraulic oil filter,
* refill system. See Hydraulic Fluid on page 19.

SERVICE AND ADJUSTMENTS

.
SERVICE POSITION
1. Place unit on a flat level surface.
ALWAYS stop engine. Ensure unit is
secure and will not tip over. Strap and
clamp onto lift if used.
2. Place steering levers in neutral and
engage parking brake.
3. Remove wing knob.
4. Tip seat forward (Figure 6).
CAUTION: Be sure footing is
secure to accomodate weight
shift of seat when rotating it into
service position.
5. When service is complete, lower seat
and secure with wing knob or hex nut.
GB - 18