Cub Cadet 28HP Tank 53AB5JEZ630, Operator'S And Service Manual, Page: 17 / 36

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required for these blades when compared to others, and
they generally produce the highest noise levels.
Medium-lift - These blades require less horsepower
than the hi-lift, and they generally work well in wider leaf
grasses and some mulch applications.
Low-lift - These blades require less horsepower than hi-
lift and medium-lift blades, and they generally work best
with wide leaf grasses, sparse grass growth, and sandy
soil conditions. They generally produce the lowest noise
levels. Bahia blades are configured without offset, and
with a maximum amount of sharpened cutting edge.
Mulch - These blades are generally designed for use in
cutting decks equipped with mulch baffles. The shape of
the blade generally produces higher turbulence in order
that the grass can be repeatedly cut and re-cut into
smaller pieces. These blades generally require more
horsepower than other blades. Mulch blades work best
when the grasses are cut at the highest levels, minimal
lengths of grasses are removed, and grass conditions
are generally dry.
F.Cooling System
This product is equipped with a cooling system
employing state-of-the-art technology. A 12VDC pow-
ered fan draws air “upward” through a high efficiency
multi-pass heat exchanger for about 10 minutes, then
stops, runs in the “downward” direction for about 1
minute. Except for engine starting when the fan does not
run for the first minute, the fan blows downward (to clear
debris on the inlet screen) for about 1 minute, then
upward for about 10 minutes...this 1 and 10 minute cycle
repeats until the engine is shut off. The heat exchanger
is mounted at an angle so that the heat will be blown
away from the operator station. The heat exchanger can
be unlatched, pivoted upward, and secured via a prop-
rod for access to the engine, etc.
MAINTENANCE AND
SERVICE
WARNING:
Disconnect the spark plug wires or remove the
key from the ignition to prevent the engine from
accidentally starting before performing any main-
tenance on this mower.
A. Mower Deck
1. Removing the Mower Deck:
a. Apply the parking brake. Remove ignition key
and both spark plug caps.
b. Lower the cutter deck to the ground. Capture
the foot pedal by placing the height of cut cle-
vis pin in the “lock” position.
c. Remove tension of the PTO belt by moving
the belt tensioning rod.
Note:
There is a certain amount of spring ten-
sion due to the weight of the deck. When remov-
ing the lift linkage from the deck the tension of the
springs will go from the deck to the lift handle.
Not capturing the lift handle while removing the
lift linkage from the deck will cause it to snap
back.
d. Detach the mower drive belt.
e.
Linch Pins
Figure. 6
Linch Pins
Height of Cut Clevis Pin
Main Frame
Remove six linchpins (See Fig. 6) (4) from the
deck and (2) from the front of the mower.
Remove the linchpins on the left and right rear