Toro 41593 Operator's Manual page 37

Every 150 hours—Change the engine oil, including
synthetic oil (more often when operating under heavy
load or in high temperature).
1. Start the engine and let it run until warm; this warms
the oil so that it drains better.
2. Set the parking brake, stop the pump, stop the engine,
and remove the ignition key.
3. Raise the seats.
CAUTION
Components under the seat will be hot if the
sprayer has been running. If you touch hot
components, you may be burned.
Allow the sprayer to cool before performing
maintenance or touching components under
the hood.
4. Place a pan below the oil drain.
5. Remove the drain plug (Figure 42).
6. Place a separate pan under the oil filter.
Figure 42
1. Oil-drain plug
7. Remove the old oil filter (Figure 43).
Figure 43
1. Oil filter
8. Wipe the filter adapter gasket surface.
9. Apply a thin coat of new oil to the rubber gasket on
the replacement filter.
10. Install the replacement oil filter to the filter adapter.
Turn the oil filter clockwise until the rubber gasket
contacts the filter adapter, then tighten the filter an
additional 1/2 turn (Figure 43).
Note: Do not over tighten the filter.
11. When the oil has drained completely, replace the drain
plug and torque it to 13.6 N-m (10 ft-lb).
12. Dispose of the used oil at a certified recycling center.
13. Remove the oil filler cap and slowly pour approximately
80% of the specified amount of oil into the engine at
the oil filler (Figure 40).
14. Check the oil level.
15. Slowly add additional oil to bring the oil level to the
full mark on the dipstick.
Important: Overfilling the crankcase with oil may
cause engine damage.
16. Replace the oil filler cap.
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