Toro 23521 Operator's Manual page 18

Figure 21
3. Change the engine-oil filter.
Note:
Ensure that the oil-filter gasket touches
the engine and then turn the filter an extra 3/4
turn.
4. Slowly pour approximately 80% of the specified
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oil into the filler tube and slowly add the
additional oil to bring it to the Full mark.
18
Figure 22
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