Engine Oil And Oil Filter Element - Yamaha YFM25RY Owner's Manual

2. Check the spark plug for electrode erosion
and excessive carbon or other deposits, and
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replace it if necessary.
2 Specified spark plug:
NGK/DR7EA
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To install the spark plug
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1. Measure the spark plug gap with a wire thick-
ness gauge and, if necessary, adjust the gap
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to specification.
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Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)
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1. Spark plug gap
2. Clean the surface of the spark plug gasket
and its mating surface, and then wipe off any
grime from the spark plug threads.
3. Install the spark plug with the spark plug
wrench, and then tighten it to the specified
torque.
Tightening torque:
Spark plug:
18 Nm (1.8 m·kgf, 13 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 past finger tight. However, the spark
plug should be tightened to the specified torque as
soon as possible.
4. Install the spark plug cap.
EBU28953

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 element must be replaced at the inter-
vals specified in the periodic maintenance and lu-
brication chart.
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