Cub Cadet CC 500 BAT - Manual (Page 25)

REPAIR PROCEDURES
21
General safety warning
Whenever working on a cordless lawn mower, remove
the safety key. Only leave the key in if it is needed to
perform a test.
CAUTION: Use caution while working around
this lawn mower. A cordless lawn mower may
start unexpectedly.
Blades
The condition of the blades will greatly effect the quality
of the cut.
The blades should be sharpened and balanced after
every hour of cutting, depending on local conditions. A
dull blade tears the grass instead of cutting it. Torn
grass blades leaves a rough look and makes the grass
vulnerable to diseases.
Blades need to be examined for damage before sharp-
ening. Blades must be balanced after sharpening to
reduce the vibrations felt from the deck.
Bent blades are a sign of a blade impact. When a bent
blade is found, the blades must be replaced and the
motor inspected for a bent shaft and cracked motor
mount.
The cutting deck on this mower is mounted with a slight
rake, meaning that the front of the deck is a 1/4” - 3/8”
lower than the rear of the deck. This is very important
to get the proper air flow in the deck so that the blades
can make the grass blades stand up to get cut.
The air flow in the cutting deck is generated by the
spinning blades. If the blades are mounted upside
down, the air flow will be reversed pushing the grass
down instead of standing up.
NOTE: Blades that are mounted upside down,
increase the risk of blade damage from struck
objects.
NOTE: The blade also acts as the cooling fan for
the motor. The motor will over heat if the blade is
mounted upside.
To replace the blade:
WARNING: When removing the cutting blade for
sharpening or replacement, protect your hands
with a pair of heavy gloves or use a heavy rag to
hold the blade.
1. Disconnect the power supply to the mower and
turn the mower on its side.
2. Block the blade to prevent it from turning when
the bolt is removed. See Figure 3.1.
NOTE: The blade can be blocked using a piece
of wood between the blade and the mower deck
or use of a commercially available blade locking
device.
NOTE: The blade locking tool pictured above is
available through MTD parts. The part number is
BB-100.
Figure 3.1
Blade holder
CHAPTER 3: REPAIR PROCEDURES