Suzuki DF25/DF30 Four Stroke Service Manual, Page 124Get this manual
POWER UNIT 7-7
INSTALLATION
Installation is reverse order of removal with special attention to the following steps
Do not re-use gasket and O-ringAlways replace with new parts
BEFORE INSTALLATION Remove plug 1Using screw driver, drive locking edges of lock washer upward, and then remove oil pump stopper from oil pan