Yamaha BIG BEAR 400 Owner's Manual page 115

CAUTION:
_
When removing the engine oil drain bolt,
the compression spring, oil strainer and
O-ring will fall out. Take care not to lose
these parts.
_
NOTE:
_
Skip steps 5–9 if the oil filter element is not be-
ing cleaned.
_
5. Remove the oil filter cover by removing
the bolts, and then remove the oil filter el-
ement.
1. Oil filter cover 2. Oil filter cover bolt (× 3)
6. Clean the oil strainer and oil filter element
with solvent.
7. Check the O-ring for damage and re-
place it if necessary.
1. O-ring
8. Install the oil filter element and O-ring.
NOTE:
_
Make sure the O-ring is seated properly.
_
8-8
2. Oil filter element