Yamaha YFZ 50 2017 Owner's Manual page 95

NOTICE: Be sure the engine oil is at the
correct level, otherwise engine damage
may result.
[ECB00852]
6. Check the O-ring for damage, and then insert
the dipstick and tighten the engine oil filler
cap.
To change the engine oil
1. Place the ATV on a level surface.
2. Start the engine, warm it up for several minu-
tes, and then turn it off.
3. Place an oil pan under the engine to collect
the used oil.
4. Remove the engine oil filler cap, and then re-
move the engine oil drain bolt to drain the oil
from the crankcase. NOTICE: When remov-
ing the engine oil drain bolt, the compres-
sion spring, oil strainer and O-ring will fall
out. Take care not to lose these parts.
[ECB00312]
1. Oil strainer
2. Compression spring
3. O-ring
4. Engine oil drain bolt
5. Clean the oil strainer with solvent.
6. Discard the old engine oil drain bolt O-ring,
and then apply a thin coat of clean engine oil
to the new O-ring.
7. Install the oil strainer, the compression
spring, the new O-ring and the engine oil
drain bolt. Tighten the engine oil drain bolt to
the specified torque. NOTICE: Before in-
stalling the engine oil drain bolt, be sure to
install the O-ring, compression spring and
oil strainer.
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