Yamaha WR125R Owner's Manual page 46

PERIODIC MAINTENANCE AND ADJUSTMENT
4. If the engine oil is below the mini-
mum level mark, add sufficient oil
of the recommended type to raise
it to the correct level.
5. Install the oil filler cap.
To change the engine oil (with or
without oil filter element replace-
ment)
1. Start the engine, warm it up for
several minutes, and then turn it
off.
2. Place an oil pan under the engine
to collect the used oil.
3. Remove the engine oil filler cap
6
and the drain bolt along with the O-
ring, compression spring, and en-
gine oil strainer, to drain the oil
from the crankcase. NOTICE:
When removing the engine oil
drain bolt, the O-ring, compres-
sion spring, and oil strainer will
fall out. Take care not to lose
these parts.
[ECA11001]
1. Engine oil drain bolt
2. O-ring
3. Compression spring
4. Strainer
4. Clean the engine oil strainer with
solvent.
TIP
Skip steps 5–7 if the oil filter element is
not being replaced.
5. Remove the oil filter element cover
by removing the bolts.
6-10
1. Bolt
2. Oil filter element cover
6. Remove and replace the oil filter
element and O-ring.
1. Oil filter element
2. O-ring
7. Install the oil filter element cover by
installing the bolts, then tightening
them to the specified torque.