Exmark 850000 AND HIGHER manual Adjusting the Anti-Scalp Rollers, Positioning the Seat

Operation

Adjusting the Anti-Scalp Rollers

It is recommended to change the anti-scalp roller position when the height of cut has changed.

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

2.Disengage the PTO.

3.Engage the park brake.

4.Stop the engine, remove the key and wait for all moving parts to stop.

5.After adjusting the height of cut, adjust the anti-scalp rollers by removing the nyloc nut.

6.Adjust the anti-scalp rollers for the normal operating conditions. Place rollers in one of the positions shown in Figure 11. Rollers will maintain 3/4 inches (19 mm) clearance to the ground to minimize gouging and roller wear or damage.

Note: For Maximum Deck Flotation, place the rollers one hole position lower. Rollers should maintain 1/4 inch (6.35 mm) clearance to the ground. Do Not adjust rollers to support the deck.

•48 and 52 Inch Units:

1.Push the adjustment lever towards the center of the machine to release the seat adjuster track (Figure 12).

Figure 12

1.Adjustment lever

2.Move the seat to the desired position and release the lever to lock in that position.

•42 Inch Unit:

1.Tip the seat forward.

2.Loosen the knob.

3.Move the seat to the desired position.

4.Tighten the knob.

5.Tip the seat back to the closed position.

Figure 11

For cutting heights above 3 1/2 inches (90 mm) use the bottom hole. The rollers will still be effective against scalping.

1. Anti-scalp roller	2. Cutting height
mounting bracket

7.Torque hardware to 27-33 ft-lb (37-45 N-m) or loss of roller may result.

Positioning the Seat

The seat can move forward and backward. Position the seat where you have the best control of the machine and are most comfortable.

Changing the Seat Ride Suspension

The number of seat springs can be changed to maximize rider comfort. More springs should be used with heavier operators and on rough terrain. Fewer springs should be used with lighter operators and when mowing smooth, well established lawns. Always keep the number of springs on the left and right side the same when adding and removing springs.

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