Maintenance Instructions LUBRICATION
63
Gear Axle Lubrication
• The gear axle oil lubrication is SAE E.P. 80W-90
(API GL-5) gear lube.
• Check the axle oil level after every 100 hours of
operation by removing the oil level plug. If additional
oil is needed, remove the breather vent on top of ax le
and ll until oil is at the level plug.
• Change axle oil every 1000 hours or two (2)
years.
Hydrostatic Transmission Fluid
Checking Hydrostatic Transmission Fluid Level
The hydrostatic transmissions are sealed units
and do not need to be opened to check the uid
level. Hydrostatic uid level should be checked ev-
ery 25 hours of machine operation. It is preferable
to check the uid when the uid is cold. Check
uid levels as follows:
IMPORTANT: Removing or breaking the seal on
the hydrostatic reservoir cap within the rst
1000 hours will VOID THE TRANSMISSION WAR-
RANTY.
1. Park the mower on a level surface. Stop the
engine and wipe dirt and contaminants from
around the base of the reservoir to better see
the COLD mark.
2. The level of the oil can be seen through the side
of the opaque reservoir (DO NOT REMOVE
RESERVOIR CAP); using a light next to the
reservoir will help make the level more visible.
Reservoir Cap
Cold Level
Air Bleed Plug
Transmission Reservoir and
Air Bleed Plug Location
3. The reservoir has a uid level COLD mark. The
reservoir oil level should ALWAYS be at or
slightly above the COLD mark.
4. If the uid is below the COLD mark (or the trans-
mission is not performing properly), contact
your local dealer. Attempting to add uid or
service the transmission may VOID THE
TRANSMISSION WARRANTY.
NOTE: Loosening the air bleed plug on top of the
transmission can be used to verify a low oil condition
in the transmission. As the plug is loosened (DO
NOT completely remove plug), oil will seep out if the
transmission is full of oil. If no oil appears, the trans-
mission oil level is low and the transmission will
need to be serviced by an authorized Walker dealer.
When a transmission is found to be low on oil, it is
highly probable that has been caused by an oil leak
either on the input drive shaft or the control arm
pivot. Dealer service is required to correct any oil
leak along with relling the transmission oil to the
proper level.
Grease Fitting and Oil Point Lubrication
Lubricate the grease ttings and oil points after ev ery
25 hours of operation. Lubricate more often when
operating in dusty or dirty conditions. Use SAE
general purpose lithium or molybdenum base grease
for grease ttings and light machine oil (SAE 10) to
lubricate oil points. Lubricate the locations shown
in the Chassis and Deck Lubrication Points
illustration.
NOTE: PTO universal joints (on the deck and trac-
tor) require routine lubrication after every 25 hours
of running time. Remove tractor PTO quick discon-
nect tube assembly for easy access to grease t-
tings.
NOTE: The best way to lubricate the PTO tube half
of the universal joint assembly is to remove it from
the tractor. See instructions for removing and install-
ing PTO quick coupler, refer to Deck Installation in
Mower Deck Installation on Tractor in the Assem
bly Instructions.
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