Exmark 4500-352 manual Check Safety Interlock System, Check for Loose Hardware, Change Engine Oil

Maintenance

Figure 9

1.	Rod	4.	Mower deck
2.	Spring	5.	Discharge deflector
			bracket
3.	Discharge deflector	6.	Assembled view

3.Hook the bent end of the rod around the front discharge deflector bracket to retain it from sliding out. Place the leg of the spring with the loop in the notch in the discharge deflector to hold the discharge deflector in the down position (see Figure 9).

Important: The discharge deflector must be spring loaded in the down position. Lift the deflector up to test that it snaps to the full down position.

Check Safety Interlock System

Service Interval: Before each use or daily

1.For your safety, your Exmark mower is equipped with Operator Presence Controls, referred to as (OPC). When either the PTO is engaged, or the transmission shifter lever is not in neutral and the operator removes both hands from the handles, the mower engine must stop.

2.To determine if the OPC is in operating condition, clear area of bystanders. Run the engine at one-third throttle, then with the drive levers and neutral lock latches in the “park brake” position,

shift the transmission into gear and release the OPC levers–the engine must stop.

3.Again, run the engine at on-third throttle, move the transmission shifter lever to neutral, engage the PTO and release the OPC levers–the engine must stop.

Note: If machine does not pass any of these tests, do not operate. Contact your authorized EXMARK

SERVICE DEALER.

Important: It is essential that operator safety mechanisms be connected and in proper operating condition prior to use for mowing.

Check for Loose Hardware

Service Interval: Before each use or daily

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

2.Visually inspect machine for any loose hardware or any other possible problem. Tighten hardware or correct the problem before operating.

Service Pre-Cleaner Element and Air Cleaner

Service Interval: Every 25 hours—Service the air cleaner. (May need more often under severe conditions. See the Engine manual for additional information.)

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

2.See the Engine Owner’s Manual for cleaning instructions.

Change Engine Oil

Service Interval: After the first 5 hours

Every 100 hours (May need more often under severe conditions.)

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

2.Drain oil while engine is warm from operation.

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