Maintenance Instructions LUBRICATION
54
Mower Deck Gearbox Lubrication
NOTE: These instructions apply to all mower decks
with gear-driven blades. Refer to Mower Deck
Spindle Lubrication in this section for mower decks
with belt-driven blades.
On gear driven decks, the mower deck gearboxes
(tee gearbox and blade drive gearboxes) are con-
nected as a unitized as sembly, and oil ows freely
between them. The gear boxes are permanently lu-
bricated (oil lled) and sealed requiring no sched-
uled lubrication. Howev er, the gearbox oil seals
should be checked every 25 hours for indication of
an oil leak; particularly the lower seals on the
blade drive gearboxes should be inspected, since
they operate in a dirty en vironment. If an oil leak is
noted, replace the oil seal and relubricate the gear-
box assembly as follows:
1. Remove gearbox cover (footrest). Deck orien-
tation should be the normal operating position.
Tee
Gearbox
Blade Drive
Gearboxes
Mower Deck Gearboxes
(Shown with Gearbox Cover
Removed for Clarity)
2. Clean the area around the individual gearbox
cover plates to prevent contaminants from en-
tering the gearcase.
3. Remove the screws securing the cover plates
on the blade drive gearboxes.
4. Check the level of lubricant in the gearboxes. If
the lubricant is low, add SAE E.P. (Extreme
Pressure) 80W-90 (API GL-5) gear lube until
the oil level is up to (submerges) the horizontal
shaft in the gearbox (shaft parallel to cover
plate).
NOTE: In case the gearboxes are completely
drained of oil, approximately 5 . oz. (15 cl) of oil
per gearbox is required to rell the gear drive
assembly.
NOTE: Since the gearboxes are connected as
a unit by connector tubes, it is necessary to add
oil slowly. Allow a few minutes after adding oil
for the oil to ow throughout the assembly and
the oil level to stabilize before reassembly.
IMPORTANT: DO NOT overll the deck gear-
boxes. The gearbox assembly is not vented,
and overlling with oil will cause excessive pres-
sure and result in oil leaks.
5. Check condition of the cover gasket and re-
place if worn or damaged. Reinstall gearbox
cover plates; torque screws to 24 lb
·in (3 N·m).
Mower Deck Spindle Lubrication
For mower decks with belt-driven blades, lubricate
each deck spindle grease tting every 25 hours.
Use SAE general purpose lithium or molybdenum
base grease for grease ttings.
Check Transaxle Fluid Level
● The transaxle oil lubrication is SAE 20W-50 (API
Service Class SL or higher) engine oil.
● Inspect both transaxle cases after every 25
hours of operation for visible leaks.
● The uid level of the transaxles can be checked
visually by looking at the uid level in the expan-
sion reservoir. When the transaxles are cold, the
uid level in the expansion reservoir should be
between 1/4 in. and 1/2 in. (0.64 cm and 1.27 cm).
Reservoir Cap
Cold Level
Hose to
Transaxles
Hot Level
Expansion Reservoir Location
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