stop when you dismount from the opera- tor’s seat, the seat switch must be replaced.

e.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 trouble 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 con- nections 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.

f.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 rec- ommended

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 pres- sure).

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 area. If the leaking tire is on a traction wheel, put blocks on each side of the opposite traction wheel and jack up the tire

that leaks about an inch off the ground. Loosen and remove the lug nuts and remove the wheel. Mount a wheel and tire, replace the lug nuts, and using a torque wrench, tighten them to 60 ± 10 ft-lbs.

If the leaking tire is on a front caster wheel, block both traction wheels and raise the caster wheel so that the tire is an inch off the ground. Loosen and remove the locknut from the axle assembly and pull the axle assembly from the caster yoke. The wheel and two spacer sleeves will drop free. Slip the axle assembly through one side of the caster yoke, through a spacer sleeve, a wheel, the other spacer sleeve and finally through the other side of the caster yoke. Then tighten the locknut on the end of the axle assembly.

Lower the mower off the jack and continue mowing. The wheel with the leaking tire should be inflated to 20 psi and the wheel placed in a large bucket of water. Carefully inspect the tire, rim and valve for escaping air bubbles which indicate a leak. Mark each leak with a yellow marking crayon and then deflate the tire to 8 psi and repeat the inspection. If the leaks you find are pin hole size to 1/16" diameter, the tire can be repaired. If the leaks are larger than 1/16" diameter, the tire can be repaired. If the tire bead is damaged, the tire can be repaired or the tire will have to be replaced.

3.Creeping: Creeping is the slight forward or backward movement of the mower when the throttle is on and the lapbars are in the opened-out position. If your mower creeps do the following.

a.Jack up rear of unit.

b.Place Lapbars in neutral opened-out posi- tion.

c.Locate jam nuts on transaxle control arms. (They are on the vertical linkage on the front of the transaxles)

d.Loosen jam nuts on both ends of rod con- nectors.

e.Start unit and push throttle all the way on.

f.If unit creeps forward, rotate vertical rod links counter-clockwise. If unit creeps in reverse, rotate clockwise.

Adjust the appropriate rod connector. The left rod for the left side of the mower and the right rod for the right side of mower. Afterward, retighten jam nuts.

F.Brakes

While the mower is in motion, all braking is performed dynamically through the hydraulic pumps and traction motors, controlled by the two steering levers. When the mower is parked with the engine shut off, the hydraulic

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Cub Cadet 23HP Z-Force 50 service manual Tires, Brakes, Inflation Pressure