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. 
   MXAL47079-UN-16APR13

   Model Z425

   
   GXT001679-UN-16SEP14

   Models Z435 and Z625

   
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   Models Z445, Z465, Z645, Z655, and Z665

   Prepare to drain oil:
   • Models Z425, Z435, and Z625— Disconnect oil drain hose (A) from the side of the engine and lower hose.
   • Models Z445, Z465, Z645, Z655, and Z665 — Put drain pan under drain valve (A).
   
   

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5. Loosen dipstick (C).

6. Drain oil:

   • Models Z425, Z435, and Z625 — Remove the oil drain cap (B). Carefully lower the quick oil drain into an approved container and allow oil to drain completely.
   • Models Z445, Z465, Z645, Z655, and Z665 — Remove drain cap (B) and drain oil into drain pan. Allow oil to drain completely.
   
   

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

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

9. 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.

10. After oil has drained, install the drain cap (B) and on Z425, Z435, and Z625 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 Z425, Z435, and Z625 Beginning Oil	Capacity	1.6 L (1.75 qt)
    Models Z445, Z465, Z645, Z655, and Z665 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.