Changing Engine Oil and Filter

IMPORTANT: Operating in extreme conditions may require more frequent service intervals:

• Engine components may become dirty or plugged when operating in extreme heat, dust, or other severe conditions.

• Engine oil can degrade if machine is operated constantly at slow or low engine speeds or for frequent short periods of time.

1. Run engine to warm oil.

2. Park machine safely on level surface. (See Parking Safely in the SAFETY section.)

3. IMPORTANT: Dirt and contamination can enter engine when checking oil level. Clean area around dipstick before loosening or removing.

   Clean area around dipstick to prevent debris from falling into crankcase.

4. 
   GXT002410-UN-15JUL15

   Model Z525E

   
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   Models Z535M and Z535R

   
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   Models Z540M and Z540R

   Prepare to drain oil:
   • Models Z525E, Z535M and Z535R — Disconnect oil drain hose (A) from the side of the engine and lower hose, routing the oil drain hose down through the opening behind the transmission oil reservoir bottle. Ensure that the drain valve will not drain onto the transmission housing, transmission fan and frame.
   • Models Z540M and Z540R — Put drain pan under drain valve (A).
   
   

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5. Drain oil:

   • Models Z525E, Z535M and Z535R — Loosen dipstick (C). Remove the oil drain cap (B) and drain the oil into an approved container until the oil has drained completely.
   • Models Z540M and Z540R — Do not loosen dipstick (C) until the oil drain valve is partially open. Partially open drain valve and slowly loosen dipstick cap to ensure oil flow control. Once oil begins draining, loosen dipstick cap and oil drain valve cap completely. Drain the oil into an approved container until the oil has drained completely.
   
   

6. Wipe dirt from around oil filter (D). Place a drain pan under oil filter, and remove filter.

7. Put a light coat of fresh, clean oil on the new filter gasket.

8. Install replacement oil filter by turning oil filter to the right (clockwise) until the rubber gasket contacts filter base. Tighten filter an additional one-half turn.

9. After oil has drained, install the drain cap (B) on all models.

10. Models Z525E, Z535M and Z535R — Attach drain hose assembly (A) to side of engine

11. Add oil no higher than FULL mark on dipstick. Begin with per specification, do not overfill.

    Item	Measurement	Specification
    Models Z525E, Z535M and Z535R Beginning Oil	Capacity	1.6 L (1.75 qt)
    Models Z540M and Z540R Beginning Oil	Capacity	2.1 L (2.2 qt)

12. Tighten dipstick.

13. Start and run engine at idle to check for leaks. Stop engine. Fix any leaks before operating.

14. Check oil level. Add oil if necessary.