Changing Engine Oil

IMPORTANT: Change oil whenever a seasonal change in temperature makes oil of a different viscosity necessary.

NOTE: Change oil after first 100 hours.

Drain oil with engine shut off, but with engine oil still warm.

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1. Remove drain screw (A).

2. While crankcase is draining, replace filter element.

3. Install drain screw.

6405 Tractors:  Tighten to 70 N·m (52 lb-ft) (use new seal ring).

6605 Tractors:  Tighten to 50 N·m (37 lb-ft) (use new seal ring).

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4. Fill crankcase with fresh oil of proper viscosity (see section "Fuel, Lubricants, Hydraulic Oil and Coolant") at filler neck (B).

6405 Tractors:  With filter, capacity is approx. 12 liters (3.2 U.S. gal.).

6605 Tractors:  With filter, capacity is approx. 19.5 liters (5.2 U.S. gal.).

5. Run engine for a short time and check for leaks at filter base and drain screw.

6. Shut off engine.

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7. Wait 15 minutes then recheck oil level. Oil should be up to the "XXX"-mark on dipstick. If necessary, top up with oil.

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