Suzuki DF200/DF225/DF250 V6 4-Stroke Outboards Service Manual, Page 283Get this manual
POWER UNIT
PCV SYSTEM
(PCV: POSITIVE CRANKCASE VENTILATION)
Due to the necessary piston to cylinder clearance, unburned combustion gasses (blow-by) will naturally pass through and enter the crankcaseThe PCV system is provided to recirculate these gasses back to the combustion chamber to be reburnedThe system consists of cylinder head cover, PCV valve, breather hose, throttle body and collector
1 1PCV valve 2PCV hose