Yamaha wr450fb Owner's Manual page 56

PERIODIC MAINTENANCE AND ADJUSTMENT
6. Install the oil tank cap, and then
the check bolt and its gasket.
1
To change the engine oil (with or
without oil filter element replace-
ment)
2
1. Place the vehicle on a level sur-
face.
3
2. Start the engine, warm it up for
several minutes, and then turn it
4
off.
3. Place an oil pan under the engine
to collect the used oil.
5
4. Remove the engine guard, the oil
tank cap, the engine oil filler cap.
6
7
1
8
2
9
3
1. Engine guard
2. Oil tank cap
3. Engine oil filler cap
5. Remove the engine oil drain bolts
and their gasket to drain the oil
from the oil tank and crankcase.
2
1. Engine oil drain bolt (oil tank)
2. Gasket
1 2
1. Engine oil drain bolt (crankcase)
2. Gasket
6. Remove the engine oil filter ele-
7-10
ment drain bolt and gasket to drain
the oil from the oil filter element.
1 2
1
1. Oil filter element drain bolt
2. Gasket
TIP
Skip steps 7–9 if the oil filter element is
not being replaced.
7. Remove the oil filter element cover
by removing the bolts.