Exmark 920 manual Adjusting the Blade Slope, Maintenance

Maintenance

	Figure 25		Figure 26
44 Inch Deck		1.	Leveling adjust locking	3.	Deck hanger
1. Blades side to side	2. Measure here		nuts
		2.	Deck lift arm	4.	Chain

7.Set anti-scalp rollers to top holes or remove completely for this adjustment.

8.Set the height-of-cut lever to the 3 inch (76 mm) position. Place two “B” thick blocks (see Block Height and Rake Table) under the rear edge of the cutting deck skirt; one on each side of the cutting deck. Place two “A” thick blocks under each side of the front edge of the deck, but not under the anti-scalp roller brackets.

Block Height and Rake Table

Deck	Front Block	Rear Block	Rake “R”
Size	Height “A”	Height “B”
44	2.69 inches	2.99 inches	1/8–3/8 inch
	(6.8 cm)	(7.6 cm)	(3.2–9.5 mm)
48 &	2.77 inches	2.81 inches	1/16–5/16 inch
52	(7.0 cm)	(7.1 cm)	(1.6–7.9 mm)

9.Carefully rotate the blades side to side (Figure 24 and Figure 25).

10.Loosen the leveling adjust locking nuts (item 1 Figure 26) on all four corners so that the deck is sitting securely on all four blocks. Make sure that the slack is removed from the deck hangers and the deck lift foot lever is pushed back against the stop, then tighten the four leveling adjust locking nuts.

11.Recheck that blocks fit just snugly under the deck skirt. Make sure all attachment bolts are tight

12.Continue leveling the deck by checking the front-to-rear blade slope; refer to Adjusting the

Blade Slope.

13.Recheck blades for levelness and repeat deck leveling procedure if necessary.

Adjusting the Blade Slope

1.Check the front-to-rear blade level any time you install the mower. If the front blade tip is not “R” (see Block Height and Rake Table in Deck Leveling) lower than the rear blade tip, adjust the blade level using the following instructions:

2.Park the machine on a level surface and disengage the blade control switch.

3.Move the motion control levers outward to the neutral position, engage the parking brake, stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

4.Check the air pressure of all four tires. If needed, adjust to the recommended inflation; refer to Checking the Tire Pressure in Drive System Maintenance section.

5.Check and adjust the side-to-side blade level if you have not checked the setting; refer to Deck Leveling.

6.Set the height-of-cut lever to the 3 inch (76 mm) position. Place two “B” thick blocks (see Block Height and Rake Table in Deck Leveling) under the rear edge of the cutting deck skirt; one on

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