Exmark 920 manual Check Mower Blades, Maintenance, Service Interval Before each use or daily

Maintenance

Figure 12

1.Positive (+) cable on discharged battery

2.Positive (+) cable on booster battery

3.Negative (–) cable on the booster battery

4.Negative (–) cable on the engine block

5.Booster battery

6.Discharged battery

7.Engine block

Figure 13

1.Install bushing in blade prior to installing bushing in spindle.

B.Install bushing/blade assembly into spindle.

4.	Connect the other end of the positive cable to the
	positive terminal of the booster battery.
5.	Connect the black negative (–) cable to the other
	terminal (negative) of the booster battery.
6.	MAKE THE FINAL CONNECTION ON
	THE ENGINE BLOCK OF THE STALLED
	VEHICLE (NOT TO THE NEGATIVE POST)

Figure 14

AWAY FROM THE BATTERY. STAND BACK.

7. Start the vehicle and remove the cables in the

reverse order of connection (the engine block

(black) connection is the first to disconnect).

Check Mower Blades

1.Use wrench here for blade installation. This nut has been torqued to 90–110 ft-lb (122–149 N-m)

2.Torque to 55-60 ft-lb (75-81 N-m) Apply lubricant to threads as needed to prevent seizing. Copper-based anti-seize preferable. Grease acceptable substitute.

Service Interval: Before each use or daily

1.Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake.

2.Lift deck and secure in raised position as stated in the Clean Grass Build-Up Under Deck procedure.

3.Inspect blades and sharpen or replace as required.

4.Reinstall the blades (if they were removed) in the following order:

A.Install bushing through blade with bushing flange on bottom (grass) side of blade.

C.Apply lubricant to threads of blade bolt as needed to prevent seizing. Copper-based anti-seize preferable. Grease acceptable substitute. Install blade bolt finger tight. Place wrench on the top spindle nut then torque the blade bolts to 55-60 ft-lb (75-81 N-m).

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