119293 6-5 REV B
Mower blade replacement
1. Park the mower on a flat surface and stop the engine.
Make sure deck clutch switch is in the down (OFF)
position. Remove ignition key. Place the steering control
levers in the park brake position. Make sure the blades
are stopped before leaving seat. Disconnect the negative
battery cable.
2. Raise the front of the unit and block with certified jack
stands. This allows easier access to the blades under the
deck.
3. Install a blade lock tool (Hustler
®
part number 381442)
over the two blades to prevent them from rotating.
4. Use a 5/8” wrench to remove the 7/16” cap screw holding
the blade to the spindle shaft.
NOTE: Only remove and install one blade at a time
when using the blade lock tool (381442) as it requires
two blades to work properly.
5. Inspect the blade for damage. If the blade is damaged,
replace it. If the blade is not damaged, either sharpen it or
replace it with a new blade or another sharpened used
blade.
6. If sharpening the blade, refer to the Mower blade
maintenance section for proper sharpening procedures.
7. The spindles have a 5/8" diameter boss that centers the
blades on the spindles. When re-installing blades, ensure
that the blade is centered on the boss and seated flat
against the spindle shaft face.
8. When attaching the blade to the spindle shaft do not re-
use spindle bolts which have stripped, worn or undercut
threads. Torque bolts on spindles to 48 foot-pounds
(65.14 Nm) when reinstalling blades.
IMPORTANT: The blade sail (curved part) must be
pointing upward toward the inside of the deck to ensure
proper cutting.
9. Remove the blade lock.
10. Raise the front of the mower and remove the jack stands.
11. Lower the mower.
12. Re-attach the negative battery cable.
Deck Belt
Inspect belts frequently for wear and serviceability. Replace a
belt that shows signs of severe cuts, tears, separation, weather
checking and cracking, or burns caused by slipping. Slight rav-
eling of belt covering does not indicate failure; trim ravelings
with a sharp knife.
Inspect the belt pulley grooves and flanges for wear. A new
belt, or one in good condition, should never run against the bot-
tom of the groove. Replace the pulley when this is the case, oth-
erwise, the belt will lose power and slip excessively.
Never pry a belt to get it on a pulley as this will cut or damage
the fibers of the belt covering.
Keep oil and grease away from belts, and never use belt dress-
WARNING
This procedure will require that the mower to be raised
and blocked up off of the ground. Use only appropriate
vehicle stands, with a minimum weight rating of 2000
pounds to block the unit up. Use in pairs only. Follow the
instructions supplied with the vehicle stands.
DANGER
Never work with blades while engine is running or deck
clutch is engaged. Always place deck clutch in the disen-
gaged position, engage control levers in the park brake
position and turn engine off. Block up mower when you
must work under it. Wear gloves when handling blades.
Always check for blade damage if mower strikes a rock,
branch or other foreign object during mowing!
DANGER
Exercise caution when working under the deck as the
mower blades are extremely sharp. Wearing gloves is
advisable when working around or with the blades.
Figure 6-14
Blade lock tool
Blade
Blade
WARNING
Never attempt to straighten a bent blade by heating, or
weld a cracked or broken blade as the blade may break
and cause serious injury.
WARNING
Rotate the blades after installation to ensure blade tips do
not touch each other or sides of the mower.
WARNING
Failure to correctly torque the bolt may result in the loss
of the blade which can cause serious injury.
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