Maintenance Instructions LUBRICATION
50
Mower Deck Gearbox Lubrication
On gear driven decks, the mower deck gearboxes
(tee gearbox and blade drive gearboxes) are
connected as a unitized as sembly, and oil ows
freely between them. The gear boxes are
permanently lubricated (oil lled) and sealed
requiring no scheduled 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 gearbox 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 replace
if worn or damaged. Reinstall gearbox cover
plates; torque screws to 24 lb·in (3 N
·m).
Mower Deck Spindle Lubrication
For the DS42 Belt Drive mower deck, lubricate each
deck spindle grease tting every 25 hours. Use
SAE general purpose lithium or molybdenum base
grease for grease ttings.
Transaxle Lubrication
• The transaxle oil lubrication is SAE 20W-50 (API
Service Class SL or higher) engine oil.
• Inspect both transaxle cases and hoses after ev-
ery 100 hours of operation for visible leaks.
• The uid level of each transaxle can be checked
visually by looking at the uid level in the expansion
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
Expansion Reservoir Location
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