Check Engine Oil Level; Engine Oil And Oil Filter Element - Yamaha WR450F Owner's Manual

wire thickness gauge and, if necessary,
adjusted to specification.
1. Spark plug gap
Spark plug gap:
0.7–0.8 mm (0.028–0.031 in)
Clean the surface of the spark plug
gasket and its mating surface, and then
wipe off any grime from the spark plug
threads.
Tightening torque:
Spark plug:
13 Nm (1.3 m·kgf, 9.4 ft·lbf)
TIP
If a torque wrench is not available when
installing a spark plug, a good estimate
of the correct torque is 1/4–1/2 turn
PERIODIC MAINTENANCE AND ADJUSTMENT
past finger tight. However, the spark
plug should be tightened to the speci-
fied torque as soon as possible.
6-8
Engine oil and oil filter
element
The engine oil level should be checked
before each ride. In addition, the oil
must be changed and the oil filter ele-
ment replaced at the intervals specified
in the periodic maintenance and lubri-
cation chart. A slight tilt to the side can
result in a false reading.
To check the engine oil level
1. Place the vehicle on a level sur-
face and hold it in an upright posi-
tion.
2. Start the engine, warm it up for
several minutes, and then turn it
off.
3. Wait a few minutes until the oil set-
tles, remove the engine oil tank
cap, wipe the dipstick clean, insert
it back into the oil tank (without
screwing it in), and then remove it
again to check the oil level.
WARNING! Never remove the
engine oil tank
high-speed operation, other-
wise hot engine oil could spout
out and cause damage or injury.
EAU52964
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cap after