2005-2009 Kawasaki Brute Force 650/KVF 650 4x4 Service Manual, Page 186Get this manual
8-4 ENGINE LUBRICATION SYSTEM Specifications
Item Engine Oil Standard API SF or SG API SH or SJ with JASO MA class
Type Viscosity Capacity
SAE 10W-40 1.54 (1 .63 US qt) (when filter is not removed) 1.75 (1.85 US qt) (when filter is removed) 2.05 (2.17 Us qt) (when engine is completely dry) 480 kPa (4.9 kgfcm2, 69.7 psi)