Cub Cadet 23HP Z-Force 60 - Manual (Page 19)

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the blade clutch switch can cause the blades to
rotate.
8. Safety Switch Operation Checks: The following
operational checks should be made daily.
a. Blade Clutch Switch: Sit in the operator’s
seat. With both steering levers in the neutral
position and the parking brake engaged, turn
the blade clutch switch “on” and try to start the
engine. The engine should not start. If it does,
the blade clutch switch must be replaced. If the
engine does not start, turn the blade clutch
switch “off” and start the engine. Now turn the
blade clutch switch “on” and the blades should
rotate. If the blades do not turn, the blade
clutch switch must be replaced, the seat switch
must be replaced or the electric PTO clutch
must be repaired.
The air-gap should be checked every 100 hrs.
(or less, if severe operating conditions exist
such as when there are many on/off cycles,
mulching operations, material collection sys-
tems used, and dusty/dirty conditions), and the
air-gap adjusted if more than 0.025". To
inspect, remove the “negative” cable from the
battery and all sparkplug wires. The air-gap
should be checked with feeler gages in the
three slots of the BBC (PTO Clutch). The air-
gap should be adjusted to 0.012" to 0.015".
There are three inspection slots in the brake
cover. To adjust, successively tighten each of
the three gap adjustment nuts an equal amount.
Insert a feeler gage (0.012" to 0.015") into each
slot as the air gap adjustment nut are tightened.
The correct adjustment occurs when slight con-
tact with the feeler gage occurs. Engage the
BBC (PTO Clutch) a couple of times, and re-
check the air-gap. If it is not between 0.012"
and 0.015", repeat the adjustment procedure.
b. Parking Brake/Lap bar Switch: Sit in the
operator’s seat. With both steering levers in the
neutral position and the blade clutch switch
“off”, release the parking brake and try to start
the engine. The engine should not start. If it
does, the parking brake switch must be reposi-
tioned or perhaps replaced. If the engine does
not start, engage the parking brake and start the
engine. The steering levers should not be mov-
able from the neutral position.
c. Seat Switch: With both steering levers in the
neutral position, the parking brake engaged and
the blade clutch switch in the “off” position,
start the engine. Now release the parking brake,
hold down on the back of the operator’s seat
against spring pressure, and swing one of the
steering levers up to the operating position.
Release the operator’s seat and the engine
should stop. If the engine does not stop, the
seat switch must be replaced. With both steer-
ing levers folded out in the neutral position, the
parking brake engaged and the blade clutch
switch in the “off” position, sit in the operator’s
seat and start the engine. Turn the blade clutch
switch to the “on” position and the blades
should start to rotate. Raise up slightly off the
operator’s seat and the blades should stop. If
the blades do not stop when you dismount from
the operator’s seat, the seat switch must be
replaced.
d. Electric PTO Clutch: This clutch operates
when the engine is running, the operator is in
the operator’s seat and the blade clutch switch
is turned on. This electric clutch is a fairly trou-
ble free device. If a problem develops and the
blades do not turn, first check the 20 amp fuse
in the yellow, 16-gauge wire between terminal
“L” on the ignition switch and the hour meter
and then investigate the wiring harness and the
connections to the seat switch, the blade clutch
switch and the electric blade clutch. Then
check the seat switch, the blade clutch switch
and finally the electric blade clutch.
e. No Cut in Reverse Switches: When both
speed/direction levers are moved past “neutral”
to reverse, the PTO Clutch will be deactivated
and the mower blades will stop rotation. The
PTO will be reactivated when one or both of
the levers are moved back to “Neutral”.
E.Tires
The two front wheels are caster wheels that are free to
swivel to accommodate the direction of the mower.
The two rear wheels are used to propel the mower in the
direction of input from the drive handles. Inflation pressure
of the rear tires is important for stability while the mower is
in operation. If the tire diameter is not equal between the
two tires, the mower will pull to one side.
1. Inflation Pressure:
a. Traction Tires—20 psi max; 8-10 psi recom-
mended
b. Front Caster Wheel—28 psi max; 20-25 psi
recommended
c. Cutting Deck Ball Wheels—Solid Polyure-
thane.
Use the Following guidelines for maintaining the tires:
a. Balance inflation pressure between the rear
tires to help maintain straight travel (see tire
side wall for proper inflation pressure).
b. Keep the valve caps tightened to prevent air
pressure loss.
2. Leaking Tires: When a flat tire occurs, repair or
replace immediately. The normal procedure is to
remove the wheel and replace it. If a tire is getting
soft, park the mower on the nearest level, paved