Exmark 4500-352 manual Adjusting the Axle Position, Maintenance

Maintenance

Cutting Height Adjustment Table (1 inch to 4 1/4 inches (2.5 cm-10.8 cm)) (cont'd.)

Cutting		Axle	Number Of Spacers			Number of 1/4 inch Blade Spacers Below Spindle
Height		Position	Below Caster
Range		(Figure 10)	Support Hub
			1/2	3/16	4		3	2	1	0
			inch	inch
3	1/8–
4 1/8 inches					3 1/8 inch		3 3/8 inch	3 5/8 inch	3 7/8 inch	4 1/8 inch
(7.9–10.5 cm)		E	4	0	(7.9 cm)		(8.6 cm)	(9.2 cm)	(9.8 cm)	(10.5 cm)
3	1/4–
4 1/4 inches					3 1/4 inch		3 1/2 inch	3 3/4 inch	4 inch	4 1/4 inch
(8.3–10.8 cm)		E	4	1	(8.3 cm)		(8.9 cm)	(9.5 cm)	(10.1 cm)	(10.8 cm)

Important: Always adjust the Number of Spacers below Caster Hub to correspond to the Axle Position as shown in table to obtain proper “rake” (blades should always be level to the ground or tipped slightly down at the front).

Adjusting the Axle Position

Desired cutting height range can be obtained by adjusting the rear axle and placing caster spacers above or below the caster arm (See Figure 10 and Figure 11 along with the Cutting Height Adjustment Chart). It may be necessary to readjust wheel drive and brake linkages.

To adjust rear axle:

1.Stop the machine and move the drive levers to the neutral lock position.

2.Disengage the PTO.

3.Place the drive levers in the neutral lock position.

4.Remove mower deck belt shield for access to axle adjustment bolts.

5.Loosen but do not remove the two axle pivot bolts and the two axle adjustment bolts (see Figure 10).

6.Place a jack under the rear center of the engine deck.

7.Raise the back end of the engine deck up enough to remove the two axle adjustment bolts.

8.With the jack, raise or lower the back end of the engine deck so that two axle adjustment bolts can be reinstalled in desired hole location. A tapered punch can be used to help align the holes.

9.Retighten all four bolts, lower unit and remove jack.

10.Install mower deck belt shield.

11.Adjust wheel drive and brake linkages as required (see Brake and Wheel Drive Linkage Adjustment section).

Figure 10

1.	Axle Pivot Bolt	5.	Position C
2.	Axle Adjustment Holes	6.	Position D
	(Located in the side of
	the rear deck.)
3.	Position A	7.	Position E
4.	Position B	8.	Place jack here

Note: The axle positions are in 1/2 inch (1.3 cm) increments and the large caster spacers are 1/2 inch (1.3 cm) thick. Therefore, by adjusting the same number of 1/2 inch (1.3 cm) caster spacers as axle hole positions the blades will retain the same front-to-back tip (rake).

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