Exmark 4500-352 Shifter Detent Adjustment, PTO Safety Switch Adjustment, Handle Height Adjustment

Models: 4500-352

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Shifter Detent Adjustment

Maintenance

Figure 24

1. Shifter Lever

3. Adjustment slot

2.Equal distance

To adjust the shifter lever:

1.Remove the 3/8 inch nyloc nut and spring disc washer from the stud on top of the transmission (See Figure 25).

Figure 25

1. Shifter Lever

3. Transmission

2.Square Holed Washer

2.Remove the shifter lever and bend it slightly. Do Not bend the lever while it is attached to the transmission.

3.Re-install lever and torque the 3/8 inch nyloc nut to 35 ft-lb (47 N-m).

To adjust shifter plate:

Note: The square-hole washer must be between the lever and the transmission.

Place shifter lever in the neutral position. Loosen the two bolts securing the shifter plate to the shifter lever legs. Adjust shifter plate and retighten bolts.

Shifter Detent Adjustment

Transmission shifter detent can be adjusted by adjusting the setscrew on the back side of transmission located just behind the neutral start switch. Turn setscrew in (clockwise) to hold the transmission shifter more positively in each gear and to increase the force on the lever required to shift gears.

Turn setscrew out (counterclockwise) to decrease force on lever required to shift gears. Factory setting is to turn setscrew all the way in then back out 1 1/2 turns.

Important: Screwing setscrew in too far will prevent the transmission from shifting.

PTO Safety Switch

Adjustment

1.Stop engine and wait for all moving parts to stop. Engage parking brake. Remove key or spark plug wire(s).

2.With the blades disengaged and the bellcrank touching the engine deck, adjust the blade safety switch (if needed) until the bellcrank depresses the plunger by 1/4 inch (.64 cm).

3.Be sure the bellcrank does not contact the switch body to prevent damage to the switch.

4.Retighten switch mounting hardware.

Handle Height Adjustment

The handle can be pivoted to allow positioning in one of the three holes allowing various adjustments for operator comfort (see Figure 26).

To adjust the handle height:

1.Remove the bottom mounting hardware on each side of the handle.

2.Pivot the handle to one of the three positions.

3.Re-install hardware and tighten.

Important: If the handle height position is changed, it will be necessary to readjust the drive and brake linkage (see Check Brake and Wheel Drive Linkage Adjustment section in Operation.)

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Exmark 4500-352 manual Shifter Detent Adjustment, PTO Safety Switch Adjustment, Handle Height Adjustment, Maintenance