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Maintenance
B. Install bushing/blade assembly into spindle.
Figure 15
1. Use wrench here for
blade installation. This
nut has been torqued to
90–110 ft-lb (122–149
N-m)
2. Torque to 55-60 ft-lb
(75-81 N-m) Apply
lubricant to threads
as needed to prevent
seizing. Copper-based
anti-seize preferable.
Grease acceptable
substitute.
C. Apply lubricant to threads of blade bolt as
needed to prevent seizing. Copper-based
anti-seize preferable. Grease acceptable
substitute. Install blade bolt nger tight. Place
wrench on the top spindle nut then torque the
blade bolts to 55-60 ft-lb (75-81 N-m).
WARNING
Incorrect installation of the blade or
components used to retain the blade can
be dangerous. Failure to use all original
components and assembled as shown could
allow a blade or blade component to be
thrown out from under the deck resulting in
serious personal injury or death.
Always install the original Exmark blades,
blade bushings, and blade bolts as shown.
Check for Loose Hardware
Service Interval: Before each use or daily
1. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
2. Visually inspect machine for any loose hardware
or any other possible problem. Tighten hardware
or correct the problem before operating.
Check Tire Pressures
Service Interval: Every 40 hours
The front caster tires are semi-pneumatic and Do
Not need to be inated.
Change Gearbox Oil
Service Interval: After the rst 50 hours
Every 100 hours thereafter
1. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
2. Place unit on a level surface.
3. Remove the gearbox and drive shaft assembly
from the mower deck. Retain hardware for re-use.
4. Remove the oil drain plug on the side of the
gearbox section and drain oil (Figure 16).
Figure 16
1. Oil drain/ll plug
5. Reinstall the gearbox and drive shaft assembly to
the mower deck.
6. Fill gearbox with Mobil SHC (synthetic) 75W-90
gear lube oil until level with oil drain/ll plug.
Note: Mower deck should remain level to the
ground when lling gearbox with oil. Do Not ll
gearbox with deck raised in the service position.
7. Apply a Teon pipe sealant to the oil plug and
re-install into the gearbox.
18