2005 Kawasaki KAF620 Mule 3010 Trans 4x4 Service Manual, Page 26Get this manual
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2-8 PERIODIC MAINTENANCE Specifications
API SF or SG API SH or SJ with JASO MA SAE 10W-40 1.5 (1.6 US qt) (when filter is not removed) 1.8 (1.9 US qt) (when filter is removed) Between and