Check Battery; Check Mower Belts; Check Hydraulic System - Gravely ZT HD Operator's Manual

CHECK BATTERY

WARNING: Battery posts,
terminals and related
accessories contain lead. Wash
hands after handling.
Clean Battery
CAUTION: AVOID DAMAGE.
DO NOT allow tools to contact
metal surfaces when removing
positive battery cable.
1. Disconnect battery cables, negative cable
first.
2. Clean terminals and battery cable ends
with a wire brush.
3. Coat terminals with dielectric grease or
petroleum jelly.
4. Reinstall battery cables, positive first.

CHECK MOWER BELTS

Check belts for wear and replace as needed.
CAUTION: Keep body parts
away from idler when
releasing idler spring tension.

CHECK HYDRAULIC SYSTEM

Check Hydraulic Oil Level
1. Place unit in service position. See
Service Position on page 20.
2. Check oil level in expansion tanks. Oil
should reach the cold fill indicator mark.
See Figure 26.
IMPORTANT: Engine should be cold when
checking initial oil level.
1. Cold Fill Line
3. Operate engine for 1 minute and recheck
oil levels.
4. Add hydraulic oil, if needed.
a. Remove expansion tank caps.
b. Fill expansion tanks with 15W-50
synthetic motor oil until oil reaches the
cold fill indicator mark. See Figure 26.
c. Reinstall expansion tank caps.
Change Hydraulic Oil and Filter
1. Operate unit for a few minutes to warm
hydraulic oil.
2. Stop engine, remove key and wait for all
moving parts to stop and for hot parts to
cool.
3. Position container under oil filter to catch
used oil.
See Figure 27.
4. Remove filter guard and oil filter from
transaxle.
5. Remove the vent / fill plug from the fill
port and allow transaxle to drain
completely.
EN - 23
1
Figure 26