Honda TRX420FA1, Owner'S Manual

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Servicing Your Honda
134
Engine Oil & Filter
Other viscosities shown in the following chart may be used when the
average temperature in your riding area is within the indicated
range.
JASO T 903 standard
The JASO T 903 standard is an index for engine oils for 4-stroke
motorcycle engines.
There are two classes: MA and MB.
Oil conforming to the standard is labeled on the oil container. For
example, the following label shows the MA classification.
(1)
(2)
(1) oil code
(2) oil classification
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